Surface ECA Probe Catalog. March 2014

Transcription

1 Surface ECA Probe Catalog March 2014

2 Disclaimer The information in this document is accurate as of its publication. Actual products may differ from those presented herein Eddyfi. Eddyfi, Ectane, Magnifi, I-Flex, T-Flex, SmartMUX, and their associated logos are trademarks or registered trademarks of Eddyfi NDT, Inc. in the United States and/or other countries. Eddyfi reserves itself the right to change product offerings and specifications without notice eddyfi.com

3 Contents We Are Eddyfi 4 Demystifying the Technology 5 The Right Surface Probe for the Job 8 Probe Numbering Nomenclature 9 Surface Probe Offering Quick Lookup 10 Flat Surfaces 12 Curved Surfaces 16 Non-ferromagnetic Welds 20 Complex Geometries Multipurpose Probes 21 Turbine Applications 24 Gear Applications 25 Custom ECA Probes 26 Calibration Standards 27 Encoder 27 3

4 We Are Eddyfi Non-destructive testing (NDT) of critical components is a vital part of integrity management and safety in such industries as nuclear and power generation, oil and gas, and aerospace. World-class engineering, nimble manufacturing, and some of the best minds in advanced eddy current testing allow Eddyfi to offer you the best performing, most reliable advanced electromagnetic hardware and software essential to you and your business. This is what we strive for, because at Eddyfi, performance matters. With its standard line of surface probes, Eddyfi is demonstrating a genuine commitment to the NDT industry. This line of standard probes offers: Truly democratized ECA solutions Migrating from magnetic-particle (MT), penetrant (PT), and pencil-probe eddy current testing (ECT) is finally made simple. Gone are the headaches from choosing eddy current array (ECA) probes. The probes herein are designed to be easy to select, versatile, and used straight out of the box... all at competitive prices. Performance Our surface probes are also designed using the highest performance standards, the best modeling software, the most advanced materials, and cutting-edge proprietary techniques. Eddyfi s ECA probes use the most advanced topologies, surface-specific mechanical casings, real coils no PCB-based alternatives which deliver the best possible signal quality and response to target flaws. Durability All our surface ECA probes are designed for harsh environments. From our rigid probes to our flexible arrays, our probes are rugged and designed to take on the real world. Expertise and support Our standard surface probes are backed by the best support in the industry. We have the know-how and the knowledge of ECA technology to help you use your probes so that they truly work for you. Eddyfi is headquartered in beautiful Québec, Canada, at the heart of the city s advanced NDT cluster. We are the most dynamic company in the field of advanced NDT equipment we ve made it our mission to push the limits of electromagnetic testing to new heights, which we achieve by designing new generations of standards and specialized probes. This is how we manage to offer complete, high-end solutions for the inspection of critical components. If, for some reason, the standard probes herein do not fit your specific needs, Eddyfi has all the necessary capabilities to develop custom solutions to tackle the most challenging applications. For more information, visit eddyfi.com or contact us at probes@eddyfi.com. 4 eddyfi.com

5 Demystifying the Technology Eddy current technologies take advantage of a physical phenomenon referred to as electromagnetic induction, where an alternating current flowing through a wire coil, generally copper, generates an oscillating magnetic field. When the magnetic field approaches another electrically conductive material, a circular flow of electrons appears in the material, which is known as an eddy current. An eddy current generates, in turn, a magnetic field that interacts with the coil and its magnetic field. Defects in the electrically conductive material, such as cracks, disrupt the flow of the eddy current and its magnetic field, modifying the electrical impedance of the coil, thus making it possible to identify and characterize them. Eddy Current Testing Usually referred to as ECT, this is the best method for inspecting non-ferrous components, such as stainless-steel welds, for defects. ECT makes it possible to reliably detect corrosion and surface cracking, for example. Such defects cause variations in the phase and magnitude of the eddy current generated by a transmitter coil, which are monitored by a receiver coil or by measuring the variations in the current flowing through the transmitter. This is the core of standard, single-element ECT. Eddy Current Array Technology Eddy current array (ECA) probes use several individual coils, grouped together in one probe. The coils are excited in sequence to eliminate interference from mutual inductance (a process referred to as channel multiplexing; see below). To optimize performance, ECA probes can be made flexible or shaped to match the geometry of the part to inspect. Data from ECA probes, which can be encoded, is transmitted directly to software for graphical display (C-scan), record keeping, and reporting. ECA probes can replace a number of traditional NDT inspection methods, such as magnetic particles, liquid penetrant, and single-element ECT (above), by significantly reducing inspection times, offering improved flaw detection, and allowing for full inspection records. It is also possible to design ECA probes in the exact shape of specific parts for simplified, one-pass inspection. Channel Multiplexing In ECA probes, channel multiplexing is achieved when groups of coils are excited at timed intervals to eliminate interference from mutual inductance, allowing them to work together to scan a wider inspection area than conventional ECT probes. Coils are considered multiplexed when the active time interval of one or a combination of coils expires and the active time interval of other coils starts. Channel multiplexing has several advantages: It minimizes crosstalk between adjacent coils It increases the channel resolution and coil sensitivity It improves the signal-to-noise ratio of the probe Channel multiplexing is achieved with the help of a device that allows signals from several groups of coils to be connected and acquired through a single instrument input. This device is called a multiplexer (MUX) and essentially works like a high-speed switch that successively connects each signal to the instrument. Eddyfi's Ectane, equipped with the SmartMUX an integrated, universal, programmable MUX takes care of channel multiplexing. 5

6 ECA Topologies Topologies are the combination of how the coils are organized inside a probe and their activation patterns, used in creating at least one eddy current channel. Eddyfi offers a variety of advanced topologies some of the most commonly used in ECA probes are presented here. Other topologies can also be used in custom probes. See page 26. Impedance The impedance topology offers a high level of sensitivity, especially when there is very little lift-off variation, and it is capable of detecting discontinuities of any orientation with a limited number of channels. The impedance topology can be separated into the following modes: Absolute one coil is excited to generate an eddy current and to sense changes in its field. Differential two coils are excited. When the two coils are over an area free from defects, there is no differential signal between the coils, as they are both inspecting identical material. When one coil is over a defect and the other is over good material, a differential signal is generated, allowing the defect to be characterized. The absolute and differential modes are available on all impedance probes. Single driver This topology uses a relatively conventional method of generating eddy current signals: a single coil is used as the transmitter. The topology offers a high density of channels due to its higher number of coils. Double driver The double-driver topology uses two simultaneously excited coils acting as a single, large transmitter. This larger area offers over the singledriver topology a better response to every possible defect, in all possible orientations, such as oblique defects, as well as a high degree of sensitivity. Overall, this translates in a better detection level compared to other topologies. The double-driver topology has a short and a long configuration: Short Makes it possible to detect typically small, axial and transverse defects. It is most often used in high-resolution probes. Long Best suited to detect slightly larger defects. Because the distance between the transmitter and the receiver is greater, long configurations take advantage of deeper eddy current signals and therefore offer a better sensitivity to deep defects. R T R R R T T R R T R T Single driver Long, double driver 6 eddyfi.com

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8 The Right Surface Probe for the Job Eddyfi offers a variety of mechanical designs to suit your ECA surface examination requirements, ensuring high-quality results and, more importantly, better performance and shorter down times. Rigid The rigid probe is Eddyfi s workhorse surface probe. Rugged and cost effective, it minimizes lift-off for high, uniform sensitivity, making it the probe of choice for flat surfaces. The probe is easy to handle and its design from its casing to its retractable contact pins makes it virtually infallible. Rigid probes come in a variety of frequency brackets, number of coils, and three casing sizes: small, medium, and large. Semi-flexible The semi-flexible probe comes with all the great features of the rigid probe, but it can also easily bend to perform axial scans on convex and concave geometries with height variations along a single axis (such as pipes and floor plates). The probe also comes in a wide variety of frequency brackets, number of coils, and three casing sizes: small, medium, and large. Padded Padded probes go one step further they can adapt to all types of geometry variations, in every direction. That makes padded probes perfect for examining weld beads, as well as transition and heat-affected zones. The probe s unique, proprietary design also allows detecting surface cracks in welds with minimal surface preparation. Furthermore, the probe s membrane is extra-tough to better resist against friction. Like other Eddyfi surface probes, padded probes come in a wide variety of frequency brackets, number of coils, and two casing sizes: small and medium. I-Flex and T-Flex I-Flex and T-Flex probes are specifically designed to fit complex geometries, which makes them perfect for one-pass examinations of pipes, nozzles, turbine blades, wheels, and any other smooth, curved surface. Indeed, they can perform in a wide range of applications that were previously challenging for ECA technology. I-Flex probes are available in three sizes small, medium, large and their unique design offers three built-in topologies, making them the perfect tool for challenging applications and trials. T-Flex probes are available in medium casings only. 8 eddyfi.com

9 Probe Numbering Nomenclature To make it easy for you to know just what type of probe you are looking for or already using, this section presents an overview of the probe numbering nomenclature. It relays useful information to identify the right probe for your needs. Type of cable exit position Technology Central frequency Number of coils Length of cable type RB: rigid SF: semi-flexible PD: padded TF: T-Flex IF: I-Flex type A: impedance C: single driver D: double driver (short) E: double driver (long) G: multitopology This is the width covered by the probe's active surface, in millimeters. LXX: frequency in hertz, divided by 10 (e.g., 500 Hz = L50) XXX: frequency in kilohertz (e.g., 10 khz = 010) XXM: frequency in megahertz (e.g., 2 MHz = 02M) Look for your probe number here. 9

10 Surface Probe Offering Quick Lookup The table below was designed to help you quickly find the probe that you are looking for. Geometry Flat surfaces Curved surfaces Stainless-steel welds Other non-ferromagnetic welds Complex (multipurpose probes) Rigid Semi-flexible Padded I-Flex T-Flex Far-surface corrosion Subsurface defects (cracks, voids, porosity) Surface-breaking defects (cracks, pits) Minimum required instrument Probe number Page Ectane mm (5.0 in.) Large ECA-RBC N03S 12 Ectane mm (2.5 in.) ECA-RBC N03S 12 Ectane mm (2.2 in.) ECA-RBE N03S 13 Ectane mm (2.2 in.) ECA-RBD N03S 13 Ectane mm (2.8 in.) ECA-RBD N03S 14 Ectane mm (1.0 in.) ECA-RBE N03S 14 Ectane mm (1.0 in.) Small ECA-RBD N03S 15 Ectane mm (1.3 in.) ECA-RBD N03S 15 Ectane mm (5.0 in.) Ectane mm (2.5 in.) Large Minimum OD 0.9 m (36 in.) ECA-SFC N03S 16 ECA-SFC N03S 16 Ectane mm (2.2 in.) ECA-SFE N03S 17 Minimum OD 0.4 m (16 in.) Ectane mm (2.2 in.) ECA-SFD N03S 17 Ectane mm (2.8 in.) ECA-SFD N03S 18 Ectane mm (1.0 in.) ECA-SFE N03S 18 Small Ectane mm (1.0 in.) ECA-SFD N03S 19 Minimum OD 0.2 m (8 in.) Ectane mm (1.3 in.) ECA-SFD N03S 19 Ectane mm (2.2 in.) ECA-PDD N03S 20 Ectane mm (1.3 in.) Small ECA-PDD N03S 20 Ectane mm (3.1 in.) Large ECA-IFG N03S 21 Ectane mm (2.2 in.) ECA-IFG N03S 21 Ectane mm (1.3 in.) Small ECA-IFG N03S 22 Ectane mm (2.8 in.) ECA-TFC N03S 23 Ectane mm (2.8 in.) ECA-TFC N03S eddyfi.com 11

11 Flat Surfaces The probes in this section are best suited for flat and large-diameter surfaces. ECA-RBC N03S This probe is specifically designed to detect far-surface corrosion and subsurface cracks in non-ferromagnetic materials. The probe offers the largest possible coverage in corrosion-mapping applications. Rigid Large Single driver 128 mm (5.04 in.) 159 mm 5 khz khz 55 mm Coils (diameter number) 6 mm mm Channels 32 Penetration (stainless steel/aluminum) Up to 6 mm (0.236 in.) ECA-RBC N03S This probe is specifically designed to detect far-surface corrosion and subsurface cracks in non-ferromagnetic materials. The probe offers half the coverage of the ECA-RBC N03S probe (above) in corrosion-mapping applications where access is limited. Rigid Single driver 64 mm (2.52 in.) 5 khz 55 mm 100 mm khz Coils (diameter number) 6 mm 17 Channels mm Penetration (stainless steel/aluminum) Up to 6 mm (0.236 in.) 12 eddyfi.com

12 ECA-RBE N03S This probe might well be the most versatile rigid surface probe on the market. It is powerful enough for far-surface corrosion, subsurface indications, and surface-breaking crack applications. Rigid Long, double driver 56 mm (2.21 in.) 250 khz 55 mm 100 mm khz Coils (diameter number) 3.5 mm mm Channels 58 Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1 mm (0.039 in.) ECA-RBD N03S This probe is designed to detect short, surface-breaking cracks and other surface defects with high accuracy. Rigid 56 mm (2.21 in.) 250 khz 55 mm 100 mm khz Coils (diameter number)) 3.5 mm 32 Channels mm 1 mm (0.039 in.) 13

13 ECA-RBD N03S This super-high-resolution probe is designed to detect very short, surface-breaking cracks. Note that an Ectane 128 or an Ectane 256 is necessary to use this probe. Consider the ECA-RBD N03S as an alternative if you are using the Ectane 64. Rigid 70 mm (2.76 in.) 500 khz 55 mm 100 mm khz Coils (diameter number) 2 mm 64 Channels mm Minimum requirement Ectane mm (0.020 in.) ECA-RBE N03S This probe might well be the most versatile rigid surface probe on the market in limited-access applications. The probe is powerful enough for far-surface corrosion, subsurface indications, and surface-breaking crack applications. It offers approximately half the coverage of the ECA-RBE N03S probe. Rigid Small Long, double driver 26 mm (1.02 in.) 250 khz 45 mm 60 mm khz Coils (diameter number) 3.5 mm mm Channels 26 Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1 mm (0.039 in.) 14 eddyfi.com

14 ECA-RBD N03S This probe is designed to detect short, surface-breaking cracks and other surface defects with high accuracy in limited-access applications. It offers approximately half the coverage of the ECA-RBD N03S probe. Rigid Small 26 mm (1.02 in.) 250 khz 45 mm 60 mm khz Coils (diameter number) 3.5 mm mm Channels 28 1 mm (0.039 in.) ECA-RBD N03S This super-high-resolution probe is designed to detect very short, surface-breaking cracks. It offers approximately half the coverage of the ECA-RBD N03S, but is compatible with the Ectane 64. Rigid Small 34 mm (1.34 in.) 500 khz 45 mm 60 mm khz Coils (diameter number) 2 mm mm Channels mm (0.020 in.) 15

15 Curved Surfaces The probes presented in this section are designed for curved surfaces, such as pipes and pressure vessels. The sizes of their casings determine the smallest diameter that the probes can address, and is specified for each. The probes presented here are also adequate for flat surfaces. ECA-SFC N03S This probe is specifically designed to detect far-surface corrosion and subsurface cracks in non-ferromagnetic materials. The probe offers the largest possible coverage in corrosion-mapping applications. It can be used on curved surfaces with an outside diameter of 0.91 m (36 in.) or more. Semi-flexible Large Single driver 128 mm (5.04 in.) 159 mm 5 khz khz 55 mm Coils 6 mm 33 Channels mm 8 mm Penetration (stainless steel/aluminum) Up to 6 mm (0.236 in.) ECA-SFC N03S This probe is specifically designed to detect far-surface corrosion and subsurface cracks in non-ferromagnetic materials. The probe offers half the coverage of the ECA-SFC N03S probe (above) in corrosion-mapping applications where access is limited. It can be used on curved surfaces with an outside diameter of 0.41 m (16 in.) or more. Semi-flexible Single driver 64 mm (2.52 in.) 5 khz 55 mm 100 mm khz Coils (diameter number) 6 mm 17 Channels mm 6 mm Penetration (stainless steel/aluminum) Up to 6 mm (0.236 in.) 16 eddyfi.com

16 ECA-SFE N03S This probe might well be the most versatile semi-flexible surface probe on the market. The probe is powerful enough for far-surface corrosion, subsurface indications, and surface-breaking crack applications. It can be used on curved surfaces with an outside diameter of 0.41 m (16 in.) or more. Semi-flexible Long, double driver 56 mm (2.21 in.) 250 khz 55 mm 100 mm khz Coils (diameter number) 3.5 mm 32 Channels mm 6 mm Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1 mm (0.039 in.) ECA-SFD N03S This probe is designed to detect short, surface-breaking cracks and other surface defects with high accuracy. It can be used on curved surfaces with an outside diameter of 0.41 m (16 in.) or more. Semi-flexible 56 mm (2.21 in.) 250 khz 55 mm 100 mm khz Coils (diameter number) 3.5 mm 32 Channels mm 6 mm 1 mm (0.039 in.) 17

17 ECA-SFD N03S This super-high-resolution probe is designed to detect very short, surface-breaking cracks. Note that an Ectane 128 or an Ectane 256 is necessary to use this probe. Consider the ECA-SFD N03S as an alternative if you are using the Ectane 64. The probe can be used on curved surfaces with an outside diameter of 0.41 m (16 in.) or more. Semi-flexible 70 mm (2.76 in.) 500 khz 55 mm 100 mm khz Coils (diameter number) 2 mm 64 Channels 124 Minimum requirement Ectane mm 6 mm 0.5 mm (0.020 in.) ECA-SFE N03S This probe might well be the most versatile semi-flexible surface probe on the market. The probe is powerful enough for far-surface corrosion, subsurface indications, and surface-breaking crack applications. It offers approximately half the coverage of the ECA-SFE N03S probes in applications where access is limited. The probe can be used on curved surfaces with an outside diameter of 0.2 m (8 in.) or more. Semi-flexible Small Long, double driver 26 mm (1.02 in.) 250 khz 45 mm 60 mm khz Coils (diameter number) 3.5 mm 16 Channels mm 5 mm Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1 mm (0.039 in.) 18 eddyfi.com

18 ECA-SFD N03S This probe is designed to detect short, surface-breaking cracks and other surface defects with high accuracy. The probe offers approximately half the coverage of the ECA-SFD N03S probe in applications where access is limited. It can be used on curved surfaces with an outside diameter of 0.2 m (8 in.) or more. Semi-flexible Small 26 mm (1.02 in.) 250 khz 45 mm 60 mm khz Coils (diameter number) 3.5 mm 16 Channels mm 5 mm 1 mm (0.039 in.) ECA-SFD N03S This super-high-resolution probe is designed to detect very short, surface-breaking cracks. The probe offers approximately half the coverage of the ECA-SFD N03S, but is compatible with the Ectane 64. It can be used on curved surfaces with an outside diameter of 0.2 m (8 in.) or more. Semi-flexible Small 34 mm (1.34 in.) 500 khz 45 mm 60 mm khz Coils (diameter number) 2 mm 32 Channels mm 5 mm 0.5 mm (0.020 in.) 19

19 Non-ferromagnetic Welds The probes presented in this section are designed to detect welding defects in non-ferromagnetic materials. Their padded membrane is extremely resistant to the harsh friction encountered in such applications, reducing weld preparation requirements to a minimum. ECA-PDD N03S This probe is designed to detect short, surface-breaking cracks and other surface defects in welds featuring weld crowns of 5 mm (0.2 in.) or less. Padded 56 mm (2.21 in.) 250 khz 55 mm 100 mm khz Coils (diameter number) 3.5 mm 32 Channels mm 5 mm 1 mm (0.039 in.) ECA-PDD N03S This super-high-resolution probe is designed to detect very short, surface-breaking cracks and other surface defects in welds featuring a weld crowns of 5 mm (0.2 in.) or less. Padded Small 34 mm (1.34 in.) 500 khz 45 mm 60 mm khz Coils (diameter number) 2 mm 32 Channels mm 5 mm 0.5 mm (0.020 in.) 20 eddyfi.com

20 Complex Geometries Multipurpose Probes The probes presented here are designed to be flexible literally and figuratively. I-Flex Probes I-Flex probes are the all-round best flexible, plug-and-play probes in the industry. Their three, built-in, adaptorless topologies make these probes perfect for a broad range of challenging applications. The I-Flex probes are also designed with actual coils, which yield high-quality signals and better detection capabilities. ECA-IFG N03S This is the largest I-Flex probe. It is excellent for detecting far-surface corrosion, subsurface indications, and surface-breaking indications. Topologies I-Flex Large Impedance Single driver 65 mm 35 mm 230 mm 79 mm (3.11 in.) 250 khz 33 mm khz Coils (diameter number) 5 mm mm Channels (according to topology) 32, 59, 60 Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1.5 mm (0.059 in.) ECA-IFG N03S This probe is excellent for detecting far-surface corrosion, subsurface indications, and surface-breaking indications. Topologies I-Flex Impedance Single driver 65 mm 35 mm 205 mm 56 mm (2.21 in.) 250 khz 28 mm khz Coils (diameter number) 3.5 mm mm Channels (according to topology) 32, 59, 60 Penetration (stainless steel/aluminum) Up to 2 mm (0.079 in.) 1 mm (0.039 in.) 21

21 ECA-IFG N03S This super-high-resolution I-Flex probe is designed to detect very short, surface-breaking indications. Topologies I-Flex Small Impedance Single driver 180 mm 65 mm 35 mm 34 mm (1.34 in.) 500 khz 23 mm khz Coils (diameter number) 2 mm mm Channels (according to topology) 32, 59, mm (0.020 in.) 22 eddyfi.com

22 T-Flex Probes T-Flex probes are highly flexible, plug-and-play probes. They are also designed with actual pancake coils, which yield high-quality signals and better detection capabilities, but in a T configuration, which is better suited to some types of inspection. ECA-TFC N03S This probe is designed to detect surface-breaking cracks and other surface defects on various smooth surfaces. Unleash the full potential of the probe by using transverse and axial channels, making it possible to detect defects of any orientations, with the help of the Ectane 128. T-Flex Single driver 57 mm 50 mm 70 mm (2.76 in.) 300 khz 80 mm 156 mm khz Coils (diameter number) 3 mm mm Channels 63 (83 with all trans. ch.) 1.5 mm (0.059 in.) ECA-TFC N03S This low-frequency probe is designed to detect some subsurface indications and surface breaking cracks on various smooth surfaces. Unleash the full potential of the probe by using transverse and axial channels, making it possible to detect defects of any orientations, with the help of the Ectane 128. T-Flex Single driver 57 mm 50 mm 70 mm (2.76 in.) 45 khz 80 mm 156 mm khz Coils (diameter number) 3 mm mm Channels 63 (83 with all trans. ch.) Penetration (stainless steel/aluminum) Up to 3 mm (0.118 in.) 1.5 mm (0.059 in.) 23

23 Turbine Applications Gas turbines are a critical asset in the power generation industry. They are big and complex, and shutting them down is often quite costly. Turbine blades, generator slots, rotor bores, bore holes, and dovetails all need to be inspected regularly, quickly, and efficiently. These applications involve developing custom probes to fulfill highly specific sets of requirements. Over the years, Eddyfi has gained a wealth of concrete experience developing ECA probes for these applications. By coming to us with your turbine application requirements, you're not starting from scratch. Rather, you have a great head start. Turbine Blades Several blades are equipped with cooling holes and gas paths, which are the source of several types of problems, such as subsurface defects and corrosion. Turbine blades also usually have very specific profiles and are sometimes coated. This presents a number of challenges for which Eddyfi has developed flexible ECA probes, trailing-edge probes, and many more. Generator Slots In power generators, current flows through enormous stator bars running in wedged slots along the generator's axis. After generators have been operating for a long time, the electromagnetic force may cause the stator bars to vibrate due to the existence of loose slot wedges. This can cause fretting and cracking, creating the need to inspect slot wedges regularly. They require profiled ECA probes, which Eddyfi has designed for several customers. Rotor Bores Many steam turbine rotors are bored to allow several shafts to be built into one another, making multiple rotation speeds possible. These bores need to be inspected for cracking, which can be difficult and time-consuming because of the length and diameter of the rotors. Eddyfi has developed a system used by many in the industry to inspect these bores with a combination of ECA and UT. Bore Holes Rotor bores are also engineered with holes, called bore holes. These holes can develop surfacebreaking cracks, which need to be detected. Eddyfi has developed a number of probes to do this job. Dovetails Turbine blades are generally attached to the rotor through an ingenious system of male and female dovetails, which must be inspected for defects to ensure safety and maximize the life of the equipment. Dovetail inspection demands probes that are shaped to specific dovetail profiles; designed to specifically target hot spots or entire dovetail profile; capable of rapid, single-pass scans of regions of interest; and easy to handle all things that Eddyfi excels at designing. 24 eddyfi.com

24 Gear Applications Over time, gear teeth are prone to surface cracking because of the constant torque they are submitted to. Surface-breaking cracks are typically found in the addendum, dedendum, and fillet of gear teeth, although they can also occur elsewhere. Depending on the size and type of gears, they are usually tested for defects using a variety of techniques, most notably magneticparticle (MT), dyepenetrant (PT), and ultrasonic (UT) testing, or any combination of the three. MT and PT are time-consuming, can easily miss small defects, and only offer crude reporting/record-keeping capabilities. Moreover, they are messy and require pre-inspection and post-inspection clean-ups. At best, these two testing methods can help detect the existence of flaws, but they only offer rudimentary length information. UT, on the other hand, is faster than the above two inspection methods, but because of the near-surface dead zone intrinsic to the technology, it is somewhat blind to surface-breaking cracks. UT also requires couplant, making a post-inspection clean-up necessary. ECA solutions developed by Eddyfi for this type of application: are more sensitive to surface cracks; are capable of scanning the addendum, dedendum, and root of a gear tooth in one pass; take less time to perform inspections than MT, PT, and UT; are capable of reliable surface-breaking crack characterization and record keeping are easy to handle Flexible gear probe 25

25 Custom ECA Probes At Eddyfi, we make the impossible possible. We have the expertise, the engineers, and the manufacturing capabilities to take almost any set of custom surface-inspection requirements from dimensions, number of coil rows, to topologies and turn them into practical solutions. We have had the opportunity to demonstrate this by developing: Static probes Clamping probes Encircling probes Spring-loaded probes Custom-geometry probes Flexible probes Gel-filled probes Individually spring-loaded elements Expandable probes 26 eddyfi.com

26 Calibration Standards These reference plates are used to calibrate your probe for a given application. Application Material Thickness Indications Part Number Corrosion Grade 6061 aluminum 6.35 mm (0.250 in.) 13 FBH, Ø mm ( in.) REFPL-A STDCOR01 Welds Grade 316 stainless steel 6.35 mm (0.250 in.) 9 EDM notch 3 FBH, Ø1.5 mm (0.059 in.) REFPL-SS STDWLD01 Grade 6061 aluminum 3.18 mm (0.125 in.) 4 EDM notch 6 FBH, Ø3 mm (0.118 in.) REFPL-A STDCAL01 Grade 316 stainless steel 3.18 mm (0.125 in.) 4 EDM notch 6 FBH, Ø3 mm (0.118 in.) REFPL-SS STDCAL01 Grade 1018 carbon steel 3.18 mm (0.125 in.) 4 EDM notch 3 FBH, Ø3 mm (0.118 in.) REFPL-C STDCAL02 Surface-breaking and subsurface defects Grade 6061 aluminum 3.18 mm (0.125 in.) 9 EDM notch 1 FBH, Ø3 mm (0.118 in.) 1 FBH, Ø1.5 mm (0.059 in.) 1 FBH, Ø0.75 mm (0.030 in.) REFPL-A STDCAL03 Grade 316 stainless steel 3.18 mm (0.125 in.) 9 EDM notch 1 FBH, Ø3 mm (0.118 in.) 1 FBH, Ø1.5 mm (0.059 in.) 1 FBH, Ø0.75 mm (0.030 in.) REFPL-SS STDCAL03 Grade 1018 carbon steel 3.18 mm (0.125 in.) 9 EDM notch 1 FBH, Ø3 mm (0.118 in.) 1 FBH, Ø1.5 mm (0.059 in.) 1 FBH, Ø0.75 mm (0.030 in.) REFPL-C STDCAL03 Encoder ENC-STD-1-18P-N03S High-precision, high-resolution (16 counts/mm) encoder for the standard surface probe series, equipped with an 18-pin connector compatible with the Ectane and a cable. The encoder is compatible with all the standard probes presented in this catalog, regardless of their size and type. The click-on design of the encoder also makes it extremely simple to install without any tools. 27

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