Modeling of a Single Pulse Electric Discharge at Sphere/flat Interface by Coupling Contact Multiphysics and Phase Transformations
|
|
|
- Gregory Bell
- 5 years ago
- Views:
Transcription
1 Modeling of a Single Pulse Electric Discharge at Sphere/flat Interface by Coupling Contact Multiphysics and Phase Transformations Presented at the COMSOL Conference 2010 Paris Paolo Di Napoli Giovanni Maizza Roberto Cagliero Politecnico di Torino Department of Materials Science and Chemical Engineering November 15, 2010
2 The apparatus Capacitor Discharge Welding Short processing times + high localized energy density Applications: welding of metals, ceramics, composites P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 2/27
3 Modules and features Elasto-plastic solver DC-electrical module Thermal module Contact pair features Solid state transformations by user-defined functions Materials properties definition dependent on temperature and phase content in steel Version 3.5a P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 3/27
4 Outline 1 Model implementation Domain Structural-mechanical Electrical Thermal Phase transformation Solution strategy 2 Results Structural Thermal Phase transformation 3 Conclusions P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 4/27
5 Model implementation Domain P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 5/27
6 Model implementation Domain Axial symmetry, 2D P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 5/27
7 Model implementation Domain Electrode Molybdenum Heigth: 25 mm Diameter: 10 mm Spherical shaped tip P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 6/27
8 Model implementation Domain Sample case AISI 9310 steel case hardened Height: 0.6 mm Diameter: 30 mm P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 6/27
9 Model implementation Domain Sample core AISI 9310 steel annealed Height: 9.4 mm Diameter: 30 mm P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 6/27
10 Model implementation Domain Contact pair P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 6/27
11 Model implementation Domain Mesh data Quadratic lagrangian elements Triangular (advancing front) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 6/27
12 Model implementation STATIONARY STRUCTURAL-MECHANICAL Elasto-plastic behavior of sample, electrode and contact region Isotropic tangent modulus E Tiso P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 7/27
13 Model implementation Structural Boundary conditions Axial symmetry P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 8/27
14 Model implementation Structural Boundary conditions Axial symmetry Applied pressure: 35 MPa P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 8/27
15 Model implementation Structural Boundary conditions Axial symmetry Applied pressure: 35 MPa Fixed edge of the sample P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 8/27
16 Model implementation Structural Boundary conditions Axial symmetry Applied pressure: 35 MPa Fixed edge of the sample Penalty factor: P n = E smaxi hmin cp1 smaxi min ( 1.e 3 5 aug, 1 ) Initial contact pressure: 10 MPa P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 8/27
17 Model implementation Structural Boundary conditions Axial symmetry Applied pressure: 35 MPa Fixed edge of the sample Penalty factor: P n = E smaxi hmin cp1 smaxi min ( 1.e 3 5 aug, 1 ) Initial contact pressure: 10 MPa Free displacement for the rest P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 8/27
18 Model implementation STATIONARY ELECTRICAL P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 9/27
19 Model implementation Electrical Boundary conditions Axial symmetry P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 10/27
20 Model implementation Electrical Boundary conditions Axial symmetry Voltage drop V P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 10/27
21 Model implementation Electrical Boundary conditions Axial symmetry Voltage drop V Contact resistance σ c = ρ e1 + ρ e2 4 r c [1] r c = contact radius [1] R. Holm, Electrical Contacts, Hugo Gebers,Stockholm, (1936) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 10/27
22 Model implementation Electrical Boundary conditions Axial symmetry Voltage drop V Contact resistance σ c = ρ e1 + ρ e2 4 r c [1] r c = contact radius Electric insulation [1] R. Holm, Electrical Contacts, Hugo Gebers,Stockholm, (1936) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 10/27
23 Model implementation Thermal TRANSIENT THERMAL P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 11/27
24 Model implementation Thermal Boundary conditions Axial symmetry P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 12/27
25 Model implementation Thermal Boundary conditions Axial symmetry Fixed temperature (massive copper tooling) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 12/27
26 Model implementation Thermal Boundary conditions Axial symmetry Fixed temperature (massive copper tooling) Joule heating: Q T = σc d (V 1 V 2 ) [1] R. Holm, Electrical Contacts, Hugo Gebers,Stockholm, (1936) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 12/27
27 Model implementation Thermal Boundary conditions Axial symmetry Fixed temperature (massive copper tooling) Joule heating: Q T = σc d (V 1 V 2 ) Heat flux: h = 50 W/(K m 2 ) [1] R. Holm, Electrical Contacts, Hugo Gebers,Stockholm, (1936) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 12/27
28 Model implementation PHASE TRANSFORMATION and INERTIAL EFFECTS Assumptions: high temperature cycling high heating rates rapid reaustenitization narrow heat affected zone Inertial effects without growth kinetics modeling P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 13/27
29 Model implementation Phase transformation A c1 and A c3 curves from experimental data P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 14/27
30 Model implementation Phase transformation A c1 and A c3 curves from experimental data T defines univocally the phase fields P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 14/27
31 Model implementation Phase transformation A c1 and A c3 curves from experimental data T defines univocally the phase fields Ψ i represents a general material property P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 14/27
32 Model implementation Phase transformation A c1 and A c3 curves from experimental data T defines univocally the phase fields Ψ i represents a general material property Properties values in pure α and pure γ phase from experimental data P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 14/27
33 Model implementation Phase transformation A c1 and A c3 curves from experimental data T defines univocally the phase fields Ψ i represents a general material property Properties values in pure α and pure γ phase from experimental data Properties values in two-phase region obtained by sigmoidal function flc1hs P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 14/27
34 Model implementation SOLUTION STRATEGY P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 15/27
35 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
36 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
37 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
38 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
39 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
40 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
41 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
42 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
43 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
44 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
45 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
46 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
47 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
48 Model implementation Solution strategy P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 16/27
49 Results Structural Thermal Phase transformation P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 17/27
50 Results Structural Pre-loading No Applied voltage Elapsed time: 0 ms 3V 2V 1V P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 18/27
51 Results Thermal CDW step: Applied voltage V : 1 V Elapsed time: 0.2 ms 3V 2V 1V 0.2 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 19/27
52 Results Thermal CDW step: Applied voltage V : 2 V Elapsed time: 2.0 ms 3V 2V 1V 2 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 20/27
53 Results Thermal CDW step: Applied voltage V : 3 V Elapsed time: 3.0 ms 3V 2V 1V 3 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 21/27
54 Results Phase transformation CDW step: focus on sample case Applied voltage V : 3 V Elapsed time: 2.2 ms 3V 2V 1V 2.2 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 22/27
55 Results Phase transformation CDW step: focus on sample case Applied voltage V : 3 V Elapsed time: 2.8 ms 3V 2V 1V 2.8 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 23/27
56 Results Phase transformation CDW step: focus on sample case Applied voltage V : 3 V Elapsed time: 3.0 ms 3V 2V 1V 3 ms P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 24/27
57 Results Yield strength ELECTRODE (1) (2) (3) SAMPLE CASE SAMPLE CORE 1V 0.2 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
58 Results Yield strength ELECTRODE (1) (2) (3) SAMPLE CASE SAMPLE CORE 1V 0.4 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
59 Results Yield strength ELECTRODE (1) (2) (3) SAMPLE CASE SAMPLE CORE 1V 0.6 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
60 Results Yield strength ELECTRODE (1) (2) (3) SAMPLE CASE SAMPLE CORE 1V 0.8 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
61 Results Yield strength ELECTRODE (1) (2) (3) SAMPLE CASE SAMPLE CORE 1V 1 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
62 Results Yield strength ELECTRODE (1) (2) SAMPLE CASE 2V (3) SAMPLE CORE 1.2 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
63 Results Yield strength ELECTRODE (1) (2) SAMPLE CASE 2V (3) SAMPLE CORE 1.4 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
64 Results Yield strength ELECTRODE (1) (2) SAMPLE CASE 2V (3) SAMPLE CORE 1.6 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
65 Results Yield strength ELECTRODE (1) (2) SAMPLE CASE 2V (3) SAMPLE CORE 1.8 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
66 Results Yield strength ELECTRODE (1) (2) SAMPLE CASE 2V (3) SAMPLE CORE 2 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
67 Results Yield strength ELECTRODE 3V (1) (2) SAMPLE CASE (3) SAMPLE CORE 2.2 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
68 Results Yield strength ELECTRODE 3V (1) (2) SAMPLE CASE (3) SAMPLE CORE 2.2 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
69 Results Yield strength ELECTRODE 3V (1) (2) SAMPLE CASE (3) SAMPLE CORE 2.4 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
70 Results Yield strength ELECTRODE 3V (1) (2) SAMPLE CASE (3) SAMPLE CORE 2.4 ms TIME (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
71 Results Yield strength ELECTRODE 3V (1) (2) (3) SAMPLE CASE SAMPLE CORE TIME 2.4 ms (1) (2) (3) P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 25/27
72 Conclusions 1/2 A coupling strategy suitable for general COMSOL architectures and solvers is designed to solve contact multiphysics involving steel samples The essential multiphysics of the real CDW process is taken into account by coupling mechanical, electrical, thermal and metallurgical fields A novel concept in the definition of non-linear properties of materials undergoing phase transformations is developed P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 26/27
73 Conclusions 2/2 The overall model is able to capture a realistic behavior of steel sample during rapid CDW heating in terms of temperature and microstructure. The model allows to follow the behaviors of all the materials properties upon CDW, thus highlighting the peculiar aspects behind the physical problem Extension to spot welding, electrical circuitry and current-assisted powder metallurgy is possible Strong convergence difficulties are encountered when severe localized strain gradients develop P. Di Napoli G. Maizza R. Cagliero COMSOL Paris 27/27
Single-turn and multi-turn coil domains in 3D COMSOL. All rights reserved.
Single-turn and multi-turn coil domains in 3D 2012 COMSOL. All rights reserved. Introduction This tutorial shows how to use the Single-Turn Coil Domain and Multi-Turn Coil Domain features in COMSOL s Magnetic
process of steel sheet
Finite element simulation process of steel sheet of laser cutting Jozef Meško 1, Andrej Zrak 1, Rastislav Nigrovič 1,*, Milan Žmindák 2 1 UNIZA, Faculty of Mechanical Engineering, Department of Technological
Drawing of Hexagonal Shapes from Cylindrical Cups
Dr. Waleed Khalid Jawed Metallurgy & Production Engineering Department, University of Technology /Baghdad Email: Drwaleed555@yahoo.com Sabih Salman Dawood Metallurgy & Production Engineering Department,
Wire and pipe drawing
Wire and pipe drawing Overview Wire drawing application deformations, drawing speeds and forces equipmentm dies and die materials Tube drawing tube drawing processes Strain and drawing force Drawing tools
Microwave Cancer Therapy
Page 1 of 9 RF and Microwave Models : Microwave Cancer Therapy Microwave Cancer Therapy Electromagnetic heating appears in a wide range of engineering problems and is ideally suited for modeling in COMSOL
THIN-WALLED HOLLOW BOLTS
THIN-WALLED HOLLOW BOLTS Experimental and numerical study Teixeira, C. D. S. Department of Mechanical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisbon, Portugal, 2010 Abstract
Structure Analysis of Transmitter Coil in Electromagnetic Launch Interceptors
International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2015) Structure Analysis of Transmitter Coil in Electromagnetic Launch Interceptors Zhu Liangming 1a, Cao
Mathematical Model and Numerical Analysis of AE Wave Generated by Partial Discharges
Vol. 120 (2011) ACTA PHYSICA POLONICA A No. 4 Optical and Acoustical Methods in Science and Technology Mathematical Model and Numerical Analysis of AE Wave Generated by Partial Discharges D. Wotzka, T.
Hamidreza Karbasi, P. Eng., PhD Conestoga College ITAL Oct. 7, 2010
Presented at the COMSOL Conference 2010 Boston Presented by: Hamidreza Karbasi, P. Eng., PhD Conestoga College ITAL Oct. 7, 2010 Creating and Building Sustainable Environments Outline Background Objectives
Corona Current-Voltage Characteristics in Wire-Duct Electrostatic Precipitators Theory versus Experiment
Ziedan et al. 154 Corona Current-Voltage Characteristics in Wire-Duct Electrostatic Precipitators Theory versus Experiment H. Ziedan 1, J. Tlustý 2, A. Mizuno 3, A. Sayed 1, and A. Ahmed 1 1 Department
Indian Journal of Engineering An International Journal ISSN EISSN Discovery Publication. All Rights Reserved
Indian Journal of Engineering An International Journal ISSN 2319 7757 EISSN 2319 7765 2016 Discovery Publication. All Rights Reserved ANALYSIS Influence of different cone angle of projectiles on the perforation
CHAPTER 3 SHORT CIRCUIT WITHSTAND CAPABILITY OF POWER TRANSFORMERS
38 CHAPTER 3 SHORT CIRCUIT WITHSTAND CAPABILITY OF POWER TRANSFORMERS 3.1 INTRODUCTION Addition of more generating capacity and interconnections to meet the ever increasing power demand are resulted in
Effect of Peak Current on the Performance of WEDM
Effect of Peak Current on the Performance of WEDM Rajeev Kumar 1 1 (Mechanical Engineering Department, MMU Sadopur, India) ABSTRACT : WEDM process is used extensively where the conventional machining process
Tutorial: designing a converging-beam electron gun and focusing solenoid with Trak and PerMag
Tutorial: designing a converging-beam electron gun and focusing solenoid with Trak and PerMag Stanley Humphries, Copyright 2012 Field Precision PO Box 13595, Albuquerque, NM 87192 U.S.A. Telephone: +1-505-220-3975
Effect of fatigue crack orientation on the sensitivity of eddy current inspection in martensitic stainless steels
Effect of fatigue crack orientation on the sensitivity of eddy current inspection in martensitic stainless steels Hamid Habibzadeh Boukani, Ehsan Mohseni, Martin Viens Département de Génie Mécanique, École
Modeling of Lightning Direct Effects Interaction of Continuing Current with Aluminum Skins
Excerpt from the Proceedings of the COMSOL Conference 2010 Boston Modeling of Lightning Direct Effects Interaction of Continuing Current with Aluminum Skins Y. Kostogorova-Beller *,1, R. Collins II 2 1
Modal Analysis of Microcantilever using Vibration Speaker
Modal Analysis of Microcantilever using Vibration Speaker M SATTHIYARAJU* 1, T RAMESH 2 1 Research Scholar, 2 Assistant Professor Department of Mechanical Engineering, National Institute of Technology,
SANDVIK 20C STRIP STEEL
SANDVIK 20C STRIP STEEL DATASHEET Sandvik 20C is a hardened and tempered carbon steel characterized by good properties in respect of: Fatigue strength and wear resistance Hardness combined with ductility
AN INNOVATIVE FEA METHODOLOGY FOR MODELING FASTENERS
AN INNOVATIVE FEA METHODOLOGY FOR MODELING FASTENERS MacArthur L. Stewart 1 1 Assistant Professor, Mechanical Engineering Technology Department, Eastern Michigan University, MI, USA Abstract Abstract Researchers
IAP 2007 Engineering Design and Rapid Prototyping. January 28, 2007 Version 1.3. Deliverable C. CAD Model and Performance Analysis
16.810 IAP 2007 Engineering Design and Rapid Prototyping January 28, 2007 Version 1.3 Deliverable C CAD Model and Performance Analysis System: MIT Space Elevator Team Beamed Ribbon Climber Component or
Consideration of Tool Chamfer for Realistic Application of the Incremental Hole-Drilling Method
Consideration of Tool Chamfer for Realistic Application of the Incremental Hole-Drilling Method Nicola Simon 1, a *, Jens Gibmeier 1, b 1 Karlsruhe Institute of Technology (KIT), Institute for Applied
NUMERICAL AND EXPERIMENTAL VALIDATION OF CHIP MORPHOLOGY
International Journal of Advanced Research in Engineering and Technology (IJARET) Volume 10, Issue 2, March- April 2019, pp. 503-508, Article ID: IJARET_10_02_049 Available online at http://www.iaeme.com/ijaret/issues.asp?jtype=ijaret&vtype=10&itype=02
Fatigue crack propagation in uniaxial loading and bending fatigue in 20 khz testing. Mohamed Sadek PhD Student Karlstad university
Fatigue crack propagation in uniaxial loading and bending fatigue in 20 khz testing Mohamed Sadek PhD Student Karlstad university 2017-02-08 EU - project Influence of cyclic frequency on fatigue strength
Custom Resistors for High Pulse Applications
White Paper Custom Resistors for High Pulse Applications Issued in June 2017 The contents of this White Paper are protected by copyright and must not be reproduced without permission 2017 Riedon Inc. All
Wire Bond Shear Test Simulation on Flat Surface Bond Pad
Available online at www.sciencedirect.com ScienceDirect Procedia - Social and Behavioral Scien ce s 129 ( 2014 ) 328 333 ICIMTR 2013 International Conference on Innovation, Management and Technology Research,
Investigation on Sensor Fault Effects of Piezoelectric Transducers on Wave Propagation and Impedance Measurements
Investigation on Sensor Fault Effects of Piezoelectric Transducers on Wave Propagation and Impedance Measurements Inka Buethe *1 and Claus-Peter Fritzen 1 1 University of Siegen, Institute of Mechanics
Finite Element Modeling and Simulation of Ultrasonic Guided Wave Propagation using Frequency Response Analysis
More Info at Open Access Database www.ndt.net/?id=593 Finite Element Modeling and Simulation of Ultrasonic Guided Wave Propagation using Frequency Response Analysis Bikash Ghose, a, Krishnan Balasubramaniam
TransGuard. AVX Multilayer Ceramic Transient Voltage Suppressors GENERAL DESCRIPTION TRANSGUARD DESCRIPTION
GENERAL DESCRIPTION The AVX TransGuard Transient Voltage Suppressors (TVS) with unique high-energy multilayer construction represents state-of-the-art overvoltage circuit protection. Monolithic multilayer
Study on micro extra deep drawing process with ultrahigh fluid pressure and press motion controls
MATEC Web of Conferences 21, 09016 (2015) DOI: 10.1051/matecconf/20152109016 C Owned by the authors, published by EDP Sciences, 2015 Study on micro extra deep drawing process with ultrahigh fluid pressure
LS-DYNA USED TO ANALYZE THE MANUFACTURING OF THIN WALLED CANS AUTHOR: CORRESPONDENCE: ABSTRACT
LS-DYNA USED TO ANALYZE THE MANUFACTURING OF THIN WALLED CANS AUTHOR: Joachim Danckert Department of Production Aalborg University CORRESPONDENCE: Joachim Danckert Department of Production Fibigerstraede
EXPERIMENTAL STUDY OF PHYSICAL AND MECHANICAL PROPERTIES OF NATURAL AND SYNTHETIC WAXES USING UNIAXIAL COMPRESSIVE STRENGTH TEST
EXPERIMENTAL STUDY OF PHYSICAL AND MECHANICAL PROPERTIES OF NATURAL AND SYNTHETIC WAXES USING UNIAXIAL COMPRESSIVE STRENGTH TEST M. Enamul Hossain Chefi Ketata D510-1360 Barrington St, Halifax, NS, Canada
Cable Protection against Earth Potential Rise due to Lightning on a Nearby Tall Object
Cable Protection against Earth Potential Rise due to Lightning on a Nearby Tall Object U. S. Gudmundsdottir, C. F. Mieritz Abstract-- When a lightning discharge strikes a tall object, the lightning current
Advanced Machining Processes Professor Vijay K. Jain Department of Mechanical Engineering Indian Institute of Technology, Kanpur Lecture 06
Advanced Machining Processes Professor Vijay K. Jain Department of Mechanical Engineering Indian Institute of Technology, Kanpur Lecture 06 (Refer Slide Time: 00:17) Today we are going to discuss about
Optimizing Microwave Signal Transmissions In Extreme Cryogenic Environments Times Microwave Systems SiO2 Products
Optimizing Microwave Signal Transmissions In Extreme Cryogenic Environments Times Microwave Systems Products Martin Winkler Product Manager Times Microwave Systems 358 Hall Avenue Wallingford, CT 06492
Numerical Simulation and Analysis of Friction Drilling Process for Alumina Alloy using Ansys
Numerical Simulation and Analysis of Friction Drilling Process for Alumina Alloy using Ansys 1Dr. A. Gopichand, Professor & HOD, Department of Mechanical Engineering, Swarnandhra college of Engineering
Transient Finite Element Analysis of a SPICE-coupled Transformer with COMSOL Multiphysics
Excerpt from the Proceedings of the COMSOL Conference 200 Paris Transient Finite Element Analysis of a SPICE-coupled Transformer with COMSOL Multiphysics T. Bödrich *, H. Neubert, and R. Disselnötter 2
TOOL ELECTRODE WEAR AT WIRE ELECTRICAL DISCHARGE MACHINING
TOOL ELECTRODE WEAR AT WIRE ELECTRICAL DISCHARGE MACHINING Oana DODUN 1, Laurenţiu SLĂTINEANU 1, Margareta COTEAŢĂ 1 and Gheorghe NAGÎŢ 1 ABSTRACT: The wire electrical discharge machining is a machining
Meshing Challenges in Simulating the Induced Currents in Vacuum Phototriode
Meshing Challenges in Simulating the Induced Currents in Vacuum Phototriode S. Zahid and P. R. Hobson Electronic and Computer Engineering, Brunel University London, Uxbridge, UB8 3PH UK Introduction Vacuum
NON-DESTRUCTIVE EVALUATION OF AIRCRAFT CABLES USING ULTRASONIC GUIDED WAVE TECHNIQUE
7 th International Symposium on NDT in Aerospace Mo.5.A.7 More Info at Open Access Database www.ndt.net/?id=18930 NON-DESTRUCTIVE EVALUATION OF AIRCRAFT CABLES USING ULTRASONIC GUIDED WAVE TECHNIQUE Alvin
Chapter - 6. Aluminium Alloy AA6061. The alloy is of intermediate strength but possesses excellent
107 Chapter - 6 Aluminium Alloy AA6061 The alloy is of intermediate strength but possesses excellent corrosion resistance and has high plane strain fracture toughness. It is readily welded. Typical applications
Nonlinear Shielded Multipair Railway Cable Modeling with COMSOL Multiphysics
Nonlinear Shielded Multipair Railway Cable Modeling with COMSOL Multiphysics Y. Jin 1, S. Karoui 1, M. Cucchiaro 1, G. Papaiz Garbini 1 1 Department of Telecommunications, SNCF Reseau, Paris, France 1
A Review of MEMS Based Piezoelectric Energy Harvester for Low Frequency Applications
Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 3, Issue. 9, September 2014,
Modelling of Pulsed Eddy Current Testing of wall thinning of carbon steel pipes through insulation and cladding
Modelling of Pulsed Eddy Current Testing of wall thinning of carbon steel pipes through insulation and cladding S Majidnia a,b, J Rudlin a, R. Nilavalan b a TWI Ltd, Granta Park Cambridge, b Brunel University
System Inputs, Physical Modeling, and Time & Frequency Domains
System Inputs, Physical Modeling, and Time & Frequency Domains There are three topics that require more discussion at this point of our study. They are: Classification of System Inputs, Physical Modeling,
TransGuard. AVX Multilayer Ceramic Transient Voltage Suppressors GENERAL DESCRIPTION TRANSGUARD DESCRIPTION
GENERAL DESCRIPTION The AVX TransGuard Transient Voltage Suppressors (TVS) with unique high-energy multilayer construction represents state-of-the-art overvoltage circuit protection. Monolithic multilayer
Modeling of Vitreous Porcelain Enamel Mechanical Properties
1 Modeling of Vitreous Porcelain Enamel Mechanical Properties Brad Potter, Nicholas Carbo Case Western Reserve University Department of Material Science and Engineering Charles Baldwin Ferro Corporation
OPTIMIZATION OF MULTIPLE PERFORMANCE CHARACTERISTICS IN EDM PROCESS OF HPM 38 TOOL STEEL USING RESPONSE SURFACE METHODOLOGY AND NON-LINEAR PROGRAMMING
VOL., NO., JANUARY ISSN 89-8 - Asian Research Publishing Network (ARPN). All rights reserved. OPTIMIZATION OF MULTIPLE PERFORMANCE CHARACTERISTICS IN EDM PROCESS OF HPM 38 TOOL STEEL USING RESPONSE SURFACE
Failure of Engineering Materials & Structures. Code 34. Bolted Joint s Relaxation Behavior: A FEA Study. Muhammad Abid and Saad Hussain
Failure of Engineering Materials & Structures Code 3 UET TAXILA MECHNICAL ENGINEERING DEPARTMENT Bolted Joint s Relaxation Behavior: A FEA Study Muhammad Abid and Saad Hussain Faculty of Mechanical Engineering,
Machine Parameter Optimization for Wire-Electric Discharge Machining
Copyright c 2008 ICCES ICCES, vol.8, no.4, pp.139-144 Machine Parameter Optimization for Wire-Electric Discharge Machining F.R.M. Romlay 1,2 and A. Mokhtar 2 Summary This paper presents an optimization
System Coupling 14.0 Twoway FSI with ANSYS FLUENT and ANSYS Mechanical
System Coupling 14.0 Twoway FSI with ANSYS FLUENT and ANSYS Mechanical ANSYS Regional Conference 1 Fluid-Structure Interaction Applications Floating thin film Wind Turbine Mitral valve 2 Fluid-structure
Experimental and Finite Element Analysis of Preloaded Bolted Joints Under Impact Loading
Mechanical Engineering Faculty Publications Mechanical Engineering 5-1-2006 Experimental and Finite Element Analysis of Preloaded Bolted Joints Under Impact Loading Brendan O'Toole University of Nevada,
AIR-CORE MEASURING DEJANA HERCEG FACULTY OF TECHNICAL SCIENCES UNIVERSITY OF NOVI SAD, SERBIA. COMSOL Conference 2010 Paris
Presented at the COMSOL Conference 2010 Paris PARAMETRIC MODEL OF AN AIR-CORE MEASURING TRANSFORMER DEJANA HERCEG FACULTY OF TECHNICAL SCIENCES UNIVERSITY OF NOVI SAD, SERBIA COMSOL Conference 2010 Paris
Copyright 2016 Abhijith Rajiv
Copyright 2016 Abhijith Rajiv An Electromechanical Coupled Model of the Probe of a Scanning Fiber Imaging System Abhijith Rajiv A thesis submitted in partial fulfillment of the requirements for the degree
ASSESSING THE EFFECTS OF DROPPED OBJECTS ON SUBSEA PIPELINES AND STRUCTURES
Proceedings of Conference ASME International Offshore Pipeline Forum October -4, 007, Houston, Texas USA ASSESSING THE EFFECTS OF DROPPED OBJECTS ON SUBSEA PIPELINES AND STRUCTURES Chris Alexander Stress
THE INFLUENCE OF GOUGE DEFECTS ON FAILURE PRESSURE OF STEEL PIPES
International Conference on Mechanical Engineering Research (ICMER2013), 1-3 July 2013 Bukit Gambang Resort City, Kuantan, Pahang, Malaysia Organized by Faculty of Mechanical Engineering, Universiti Malaysia
The influence of gouge defects on failure pressure of steel pipes
IOP Conference Series: Materials Science and Engineering OPEN ACCESS The influence of gouge defects on failure pressure of steel pipes To cite this article: N A Alang et al 2013 IOP Conf. Ser.: Mater.
Electronic supplementary material
Electronic supplementary material Three-dimensionally Deformable, Highly Stretchable, Permeable, Durable and Washable Fabric Circuit Boards Qiao Li 1, and Xiao Ming Tao 1,2 * 1 Institute of Textiles and
VHDL-AMS Behavioural Modelling of a CMUT Element Samuel Frew University of British Columbia
VHDL-AMS Behavioural Modelling of a CMUT Element Samuel Frew University of British Columbia frews@ece.ubc.ca Hadi Najar University of British Columbia motieian@ece.ubc.ca Edmond Cretu University of British
FUNCTIONS OF CIRCUIT BREAKERS
FUNCTIONS OF CIRCUIT BREAKERS Circuit breakers are designed to carry out the following functions: 1. They must be capable of closing on and carrying full-load currents at rated power factors continuously.
CHAPTER 5 FAULT DIAGNOSIS OF ROTATING SHAFT WITH SHAFT MISALIGNMENT
66 CHAPTER 5 FAULT DIAGNOSIS OF ROTATING SHAFT WITH SHAFT MISALIGNMENT 5.1 INTRODUCTION The problem of misalignment encountered in rotating machinery is of great concern to designers and maintenance engineers.
Nonlinear behavior of Reinforced Concrete Infilled Frames using ATENA 2D
Available online at www.ijacskros.com Indian Journal of Advances in Chemical Science S1 (2016) 173-178 Nonlinear behavior of Reinforced Concrete Infilled Frames using ATENA 2D M. D. Raghavendra Prasad,
CHAPTER 7 Alpha-Beta Brass. Alpha-Beta Brass also known as duplex brass and Muntz metal is the
120 CHAPTER 7 Alpha-Beta Brass Alpha-Beta Brass also known as duplex brass and Muntz metal is the traditional material which represents commonly the soft engineering alloys. This alloy consists of two
Partial Discharge Signal Detection by Piezoelectric Ceramic Sensor and The Signal Processing
Journal of Electroceramics, 13, 487 492, 2004 C 2004 Kluwer Academic Publishers. Manufactured in The Netherlands. Partial Discharge Signal Detection by Piezoelectric Ceramic Sensor and The Signal Processing
Generation Laser Scanning Method for Visualizing Ultrasonic Waves Propagating on a 3-D Object
1st International Symposium on Laser Ultrasonics: Science, Technology and Applications July 16-18 2008, Montreal, Canada Generation Laser Scanning Method for Visualizing Ultrasonic Waves Propagating on
Dynamic Approach to Quasi-static Nonlinear Problems for Sub-Sea Applications
Dynamic Approach to Quasi-static Nonlinear Problems for Sub-Sea Applications Smitha G, Mahesh Bhat GE Oil & Gas, Bangalore Abstract: In deep-sea oil fields, metal seals play an important role to facilitate
Effect of Duty Cycle Variation on Acoustic Pressure Field Simulation in an Ultrasound Bioreactor
Effect of Duty Cycle Variation on Acoustic Pressure Field Simulation in an Ultrasound Bioreactor Abdolrasol Rahimi, Jacob Crapps, Natasha Case Biomedical Engineering, Saint Louis University Saint Louis,
CH # 8. Two rectangular metal pieces, the aim is to join them
CH # 8 Screws, Fasteners, and the Design of Non-permanent Joints Department of Mechanical Engineering King Saud University Two rectangular metal pieces, the aim is to join them How this can be done? Function
Workshop Practice TA 102 Lec 6 & 7 :Theory of Metal Cutting. By Prof.A.Chandrashekhar
Workshop Practice TA 102 Lec 6 & 7 :Theory of Metal Cutting By Prof.A.Chandrashekhar Theory of Metal cutting INTRODUCTION: The process of manufacturing a component by removing the unwanted material using
Fatigue Properties of Ti-6Al-4V Processed by SEBM
Institut für Werkstofftechnik Metallische Werkstoffe Fatigue Properties of Ti-6Al-4V Processed by SEBM T. Niendorf, J. Günther, D. Krewerth, A. Weidner and H. Biermann EBAM 2016 Nuremberg April 2016 EBAM
CHAPTER 2 ELECTROMAGNETIC FORCE AND DEFORMATION
18 CHAPTER 2 ELECTROMAGNETIC FORCE AND DEFORMATION 2.1 INTRODUCTION Transformers are subjected to a variety of electrical, mechanical and thermal stresses during normal life time and they fail when these
Effect of Bolt Layout on the Mechanical Behavior of Four Bolted Shear Joint
Effect of Bolt Layout on the Mechanical Behavior of Four Bolted Shear Joint using Three Dimensional Finite Effect of Bolt Layout on the Mechanical Behavior of Four Bolted Shear Joint using Three Dimensional
INFLUENCE OF PILES ON LOAD- SETTLEMENT BEHAVIOUR OF RAFT FOUNDATION
INFLUENCE OF PILES ON LOAD- SETTLEMENT BEHAVIOUR OF RAFT FOUNDATION BALESHWAR SINGH Department of Civil Engineering Indian Institute of Technology Guwahati Guwahati 78139, India NINGOMBAM THOIBA SINGH
ACOUSTIC AND ELECTROMAGNETIC EMISSION FROM CRACK CREATED IN ROCK SAMPLE UNDER DEFORMATION
ACOUSTIC AND ELECTROMAGNETIC EMISSION FROM CRACK CREATED IN ROCK SAMPLE UNDER DEFORMATION YASUHIKO MORI 1, YOSHIHIKO OBATA 1 and JOSEF SIKULA 2 1) College of Industrial Technology, Nihon University, Izumi
Design of ESS-Bilbao RFQ Linear Accelerator
Design of ESS-Bilbao RFQ Linear Accelerator J.L. Muñoz 1*, D. de Cos 1, I. Madariaga 1 and I. Bustinduy 1 1 ESS-Bilbao *Corresponding author: Ugaldeguren III, Polígono A - 7 B, 48170 Zamudio SPAIN, jlmunoz@essbilbao.org
Guided Wave in Engineering Structures Using Non-Contact Electromagnetic Acoustic Transducers A Numerical Approach for the Technique Optimisation.
Excerpt from the Proceedings of the COMSOL Conference 2009 Milan Guided Wave in Engineering Structures Using Non-Contact Electromagnetic Acoustic Transducers A Numerical Approach for the Technique Optimisation.
ISO INTERNATIONAL STANDARD. Non-destructive testing Acoustic emission inspection Secondary calibration of acoustic emission sensors
INTERNATIONAL STANDARD ISO 12714 First edition 1999-07-15 Non-destructive testing Acoustic emission inspection Secondary calibration of acoustic emission sensors Essais non destructifs Contrôle par émission
Inductive Conductivity Measurement of Seawater
Inductive Conductivity Measurement of Seawater Roger W. Pryor, Ph.D. Pryor Knowledge Systems *Corresponding author: 498 Malibu Drive, Bloomfield Hills, MI, 48302-223, rwpryor@pksez.com Abstract: Approximately
Metal Forming Technique by Using LASER (Laser bending): A Review Bhavesh parekh 1 Ashok choudhary 2
IJSRD - International Journal for Scientific Research & Development Vol. 1, Issue 5, 2013 ISSN (online): 2321-0613 Metal Forming Technique by Using LASER (Laser bending): A Review Bhavesh parekh 1 Ashok
Modelling of Rebar and Cable Bolt Behaviour in Tension/Shear
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2015 Modelling of Rebar and Cable Bolt Behaviour in Tension/Shear Xuwei Li University
Preliminary CFD analysis of a ventilated chamber for candles testing
Preliminary CFD analysis of a ventilated chamber for candles testing S. Favrin, G. Nano, R. Rota, M. Derudi simone.favrin@polimi.it Politecnico di Milano, Dip. di Chimica, Materiali e Ingegneria Chimica
Experimental and numerical investigation of tube sinking of rectangular tubes from round section
International Journal of Engineering and Technology sciences (IJETS) ISSN 2289-4152 Academic Research Online Publisher Research Article Experimental and numerical investigation of tube sinking of rectangular
NUMERICAL ANALYSIS OF SCREW ANCHOR FOR CONCRETE
VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures FraMCoS-8 J.G.M. Van Mier, G. Ruiz, C. Andrade, R.C. Yu and X.X. Zhang (Eds) NUMERICAL ANALYSIS OF SCREW ANCHOR FOR
Straight Bevel Gears on Phoenix Machines Using Coniflex Tools
Straight Bevel Gears on Phoenix Machines Using Coniflex Tools Dr. Hermann J. Stadtfeld Vice President Bevel Gear Technology January 2007 The Gleason Works 1000 University Avenue P.O. Box 22970 Rochester,
Solidification Process(1) - Metal Casting Chapter 9,10
Solidification Process(1) - Metal Casting Chapter 9,10 Seok-min Kim smkim@cau.ac.kr -1- Classification of solidification processes -2- Casting Process in which molten metal flows by gravity or other force
May 2014 Group 9 Variable Coil Helmet System for Transcanial Magnetic Stimulation (TMS)
May 2014 Group 9 Variable Coil Helmet System for Transcanial Magnetic Stimulation (TMS) Design Document Group Members: Ann Goodyear - ann745@iastate.edu Jialue Fang - jlfang@iastate.edu Jikang Qu - jqu@iastate.edu
Coupled Elliptic Solvers for Embedded Mesh and Interface Problems
Coupled Elliptic Solvers for Embedded Mesh and Interface Problems Natalie Beams, Andreas Klöckner, Luke Olson University of Illinois at Urbana-Champaign 5 January 2017 Complicated geometry, time-dependent
Maximizing the Fatigue Crack Response in Surface Eddy Current Inspections of Aircraft Structures
Maximizing the Fatigue Crack Response in Surface Eddy Current Inspections of Aircraft Structures Catalin Mandache *1, Theodoros Theodoulidis 2 1 Structures, Materials and Manufacturing Laboratory, National
Fretting Fatigue of Slot-dovetails in Turbo-generator Rotor
Fretting Fatigue of Slot-dovetails in Turbo-generator Rotor (From O&M Issues Discussed in Recent EPRI Meetings) H. Ito Toshiba Corporation 1-1-1, Shibaura, Minato-Ku, Tokyo, 105-8001 Japan Abstract-This
SIMULATION AND EXPERIMENTAL WORK OF SINGLE LAP BOLTED JOINT TESTED IN BENDING
SIMULATION AND EXPERIMENTAL WORK OF SINGLE LAP BOLTED JOINT TESTED IN BENDING Aidy Ali *, Ting Wei Yao, Nuraini Abdul Aziz, Muhammad Yunin Hassan and Barkawi Sahari Received: Jun 13, 2007; Revised: Nov
Heat-Mechanics Interaction Behavior of Laminated Rubber Bearings under Large and Cyclic Lateral Deformation
October 2-7, 28, Beijing, China Heat-Mechanics Interaction Behavior of Laminated Rubber Bearings under Large and Cyclic Lateral Deformation E. Takaoka, Y. Takenaka 2, A. Kondo 3, M. Hikita 4 H. Kitamura
Module-3: ADVANCED MATERIAL REMOVAL PROCESSES
Module-3: ADVANCED MATERIAL REMOVAL PROCESSES Lecture No-9 Electrical Discharge Machining (EDM) It is an advanced machining process primarily used for hard and difficult metals which are difficult to machine
Target Temperature Effect on Eddy-Current Displacement Sensing
Target Temperature Effect on Eddy-Current Displacement Sensing Darko Vyroubal Karlovac University of Applied Sciences Karlovac, Croatia, darko.vyroubal@vuka.hr Igor Lacković Faculty of Electrical Engineering
A Numerical Study of Depth of Penetration of Eddy Currents
A Numerical Study of Depth of Penetration of Eddy Currents S.Majidnia* a,b, R.Nilavalan b, J. Rudlin a a. TWI Ltd, Cambridge,United Kingdom b Brunel University, London,United Kingdom shiva.majidnia@twi.co.uk
A Hybrid Trailing Edge Control Surface Concept
Pınar ARSLAN, Uğur KALKAN, Harun TIRAŞ, İlhan Ozan TUNÇÖZ, Yosheph YANG, Ercan GÜRSES, Melin ŞAHİN, Serkan ÖZGEN, Yavuz YAMAN Department of Aerospace Enginnering, Middle East Technical University Ankara,
ULTRASONIC GUIDED WAVES FOR AGING WIRE INSULATION ASSESSMENT
ULTRASONIC GUIDED WAVES FOR AGING WIRE INSULATION ASSESSMENT Robert F. Anastasi 1 and Eric I. Madaras 2 1 U.S. Army Research Laboratory, Vehicle Technology Directorate, AMSRL-VT-S, Nondestructive Evaluation
Final Publishable Summary
Final Publishable Summary Task Manager: Dr. Piotr Klimczyk Project Coordinator: Mr. Stefan Siebert Dr. Brockhaus Messtechnik GmbH & Co. KG Gustav-Adolf-Str. 4 D-58507 Lüdenscheid +49 (0)2351 3644-0 +49
Numerical Analysis of Piled Raft Foundation using Fem with Interaction Effects
International Journal of TechnoChem Research ISSN:2395-4248 www.technochemsai.com Vol.01, No.03, pp 126-134, 2015 Numerical Analysis of Piled Raft Foundation using Fem with Interaction Effects Naveen kumar.d
Superconducting RF Cavity Performance Degradation after Quenching in Static Magnetic Field
Superconducting RF Cavity Performance Degradation after Quenching in Static Magnetic Field T. Khabiboulline, D. Sergatskov, I. Terechkine* Fermi National Accelerator Laboratory (FNAL) *MS-316, P.O. Box
TESTING EQUIPMENT SHEAR STRENGTH PARAMETERS SOIL. established in 1972
SOIL www.alfatestusa.com established in 1972 SOIL Used to perform large range of Triaxial tests on soil samples to determine the strength parameters and the mechanical properties. Capable of performing:
Design of induction heating lines using ELTA program
Design of induction heating lines using ELT program V Bukanin, Ivanov, Zenkov, V Nemkov To cite this version: V Bukanin, Ivanov, Zenkov, V Nemkov. Design of induction heating lines using ELT program. 8th