Proximitor probe systems based on eddy current technology have become common place in industrial plants these days. Proximity probe system interchangeability, dont build a frankenstein system. Training on the proper use of the eddy current system is required in accordance with sec. Miscellaneous probes eddy current probes techna ndt.
Reference standards should be used in every application and are available in many configurations and materials. Typical specifications for standard targets and probes. The centurion ndt series of midfrequency pencil probes can be used satisfactorily with the entire line of centurion ndt eddy current testers, and will also work. Spc371r1afe spring loaded probe spc629 spc4161 spc624diffinc spc623diffinc spc621 flangetube well spc620mtl. Eddy current probe catalog introduction 6 every section in this probe catalog begins with a short description of the different eddy current products available. Eddy current probes ndt and inspection product and.
Proximity probe system interchangeability, dont build a. The most important feature in eddy current testing is the way in which the eddy currents are induced and detected in the material under test. Eddy current ndt probes, uk eddy current testing, eddy. The new txe probe series is the best at detecting circumferential cracks, particularly those located at the edge of supports or tube sheets.
The probes spo2210 and spo1958 include two parallel. Each eddy current probe available from ndts has a unique code. Buckley, formerly of hocking ndt introduction scope this document is intended as a brief familiarisation course for hocking ndts customers and sales representatives. Plus significantly reduce dose and radiation waste. For the test, we constructed a special highimpedance cable. The following suggested repair actions are based on accepted industry standards. Eddy current probe system api670 proximity transducer system, 5 mm and 8 mm. The applied eddy current techniques probes and frequencies are shown intable 1 andfigure 6. With the new tx series, eddylab is introducing a fully digital device incorporating usb, can and a highspeed analogue interface.
Probe innovations improve inspection efficiencies with combo and high stability xprobes zetecs combination array and bobbin probes help save time and money. We have the most extensive experience, and we develop the highest quality ect inspection products. This paper is intended to provide information to help the user in selecting the right e. Actual values depend on probe, target, and calibration. On larger more critical machines, two 2 eddy current transducer systems are normally recommended per bearing. Cylinders examined by this method are to be marked with a ve stamp after the year. Our design team understands the regulatory requirements for tubing and plate. The cracked sides of the test pieces root side were scanned. Techna ndts miscellaneous eddy current probes include spring loaded, blade, wheel, defectometer hole, and defectometer surface probes. Pulsed eddy current assessing condition of pipework and pressure vessels.
The examples and diagrams in this manual are included solely for illustrative. At ecndt, our vision is providing technically superior products for all of our customers at competitive pricing. Eddy current techniques in ndeeddy current techniques in nde lalita udpa nondestructive evaluation laboratory department of electrical and computer engineering miccg s euvesyhigan state university east lansing, mi 48824 wcndt p f w k h d b a il 15 2012wcndt preconference workshop, durban, april 15, 2012. Five different probes were designed, produced and experimentally validated. Maximum sensitivity is obtained with this control set fully clockwise. In this study the results of eddy current testing and eddy current simulation are given. High frequency surface probes available in various shielded or unshielded designs and frequencies. Eddy current responses of a single coil may be conveniently described by reference to the impedance plane. The solution is designed to scan metals as thick as.
Worldclass manufacturing product performance comes first at zetec, which is why being our own. Lowfrequency eddy current throughbushing inspection. Bpf bobbin probe flexible cl n and ul c probes us e the above key and following pages to determine the probe to bes t meet your needs e xample zapfxp2e 00. Cad files eddycurrent sensor probes lion precision. The system based on the ecscan architecture makes use of a new probe excitation block capable of simultaneously. This section gives a short description on how to build a probe part number. These probes are commonly used for surface crack detection. Lion precision offers a number of products, like eca101 to solve your toughest challenges. High quality eddy current testing solutions for complete inspections.
An introduction to eddy current testing from the ndendt resource center. The eddy currents diffuse inwards and decrease in strength. Dynamic rotating rigid probe with stainless steel housing for bolt holes testing coils are positioned at right angles to the probe shaft length, differential unshielded shielded details eddycurrent probes read more. Additionally, these probes are shielded to offer excellent edge effect characteristics. Eddy current studies were conducted on the innerdiameter surface of piping using a zetec miz27si eddy current instrument and a zetec c z00008571 pluspoint spot probe with an operating frequency of. The single eddy current probe will then measure the shafts vibration in that given plane. This chapter describes how to install a 1442 series eddy current probe system. Eddy current probes are particularly suitable devices for noncontact measurements on metallic targets. Dynamic rotating rigid probe with stainless steel housing for bolt holes testing coils are positioned at right angles to the probe shaft length, differential unshielded shielded details eddy current probes read more. Olympus manufactures high quality cables and adaptors to fit with all eddy current probe models. We offer more than 10,000 standard and custom designed eddy current probes, standard references, and accessories. Eddy current testing also commonly seen as eddy current testing and ect is one of many electromagnetic testing methods used in nondestructive testing ndt making use of electromagnetic induction to detect and characterize surface and subsurface flaws in conductive materials.
The test is being conducted using usaf eddy current equipment. Pdf design and analysis of a gmr eddy current probe for ndt. Novel eddy current probes were developed to detect submillimetre defects with any orientation on the inner surface of pipes. The aim of this project is to develop an electronic system that makes use of multiplexing techniques applied to eddy current nondestructive testing while using a new probe array. About the company staveley instruments is a us manufacturing company based in kennewick, washington producing a wide range of innovative ndt equipment and sensors. Lowfrequency eddy current throughbushing inspection lowfrequency eddy current probe being tested in a throughbushed hole with a 0. General purpose eddy current probe for detection of surface and near surface defects around protruding head fasteners and other structures in aircraft structures030. The work described here includes a study of the use of advanced eddy current probe configurations that provide sensitivity to both axial and circumferentially oriented flaws and an investigation of the reliability and effectiveness of an insidesurface inspection technique in which direct contact with the surface from. As discussed in the previous pages, probes can contain one or more coils, a core and shielding. Eddy current simulation was used to extend the family of calibration graphs used in defect depth sizing. An alternate magnetic field is produced by a solenoid and eddy currents are generated in the material under test.
To find additional product information cad drawing files, 3d models, etc. Any discontinuities or material property variations that change the eddy current flow in the part are detected as. These probes will operate with the ed1100 or ed810, as well as most general purpose eddy current instruments at frequencies for 500 khz to 6 mhz. Olympus eddy current probes consist of the acquired brands of nortec and ndt engineering. Therefore, the eddy current probe should be mounted in the plane where the greatest vibration is expected. Astm e3052 standard practice for examination of carbon steel welds using eddy current array. All specifications are subject to change without notice. The ge mini drive unit is a small, lightweight, rotating eddy current probe drive and is used in conjunction with the probes on page 8. Eddy current probe catalog probe kits continued 8 to order.
The company manufactures all the top names in ndt such as nortec, sonic, cpx160 xray and of course nortec eddy current probes and harisonic ultrasonic transducers. We can customize each kitorder to meet all budget requirements. The possibility does exist that tubes could contain defects andor leaks which are not detectable, such as those at or near the tube end. Eddy current probes and application guide olympus ims. Pdf eddy current probes based on magnetoresistive array. Eddy current techniques in ndeeddy current techniques in. Since 1968, zetec has manufactured over 10,000 different probe designs to meet the constantly changing needs of. The patentpending solution features a stateoftheart portable instrument with realtime cscan imaging, fast data acquisition, as well as gridmapping and dynamic scanning modes. Zetec eddy current surface array probes are specifically designed to solve the inspection challenges companies face everyday. In fact, one of the major advantages of eddy current inspection is that probes can be custom designed for a wide variety of applications. Probe innovations improve inspection efficiencies with combo xprobes zetecs combination array and bobbin probes help save time and money. This is the basis of eddy current testing, by monitoring the voltage across the coil in such an arrangement we can detect changes in the material of interest. All four test pieces were tested with eddy current method. It has been designed to make the inspection of fastener holes accurate and quick.
Tr eddy current probes, with laterally displaced transmit and receive coils, present a number of advantages over. The rate of decrease of the eddy currents is monitored by the pec probe and is used to determine the wall thickness. Everywhere a medium or high criticality machine is running, chances are that noncontacting eddy current systems are installed and are used for condition monitoring measurements andor automatic machine trip or shutdown. Sizing of fatigue cracks using different eddy current. Probes offers the ability to successfully perform specialized eddy current testing.
Warning read the instruction manual completely and follow all the safety information before attempting to use or service this instrument. We manufacture eddy current probes, cables, adapters, standards, and specialized kits to meet our customers needs. Rotating plastic scanner probes rotating plastic scanner probes feature a variety of expandable plastictip probes and stainless. The manual bolt hole series of eddy current probes. Assessment of eddy current testing for the detection of. As a result of electromagnetic induction, eddy currents will be generated in the pipe wall. As discussed in the previous pages, probes can contain one or. Buckley pdf, 429 kb eddy current testing at level 2, international atomic energy agency, vienna, 2011 pdf 5. Eddy current probes are available in a large variety of shapes and sizes. Specifications assume a target area at least three times the diameter of the probe. Position the probe target gap to the midpoint of the range.
Wearable flexible eddy current probe array for inspecting complex surfaces author. Eddy current techniques et are sensitive to crack size and to defect characteristics like branching roughness, crack opening, tilt and. Proximity sensors work on the eddy current principle. Traditionally, a technician manually pushes the probe through the entire length of the tube to perform an eddy current inspection. Ed520 portable eddy current instrument centurion ndt. Eddy current nde is commonly used in the inspection of conducting. Eddy current probes probe kits designed to meet the customers needs and specifications. Use the calibration zero adjustment on the bottom of the device to set the output voltage to 0. Eddy current probes eddy current cables pencil probes. Electronic system for nondestructive testing using eddy. In these tests we also used a nortec spo206s coiltype reflection probe. The eddy current equipment must have a reference ring and probe for each cylinder. These probes include arrays of planar trapezoidal coils in a flexible substrate used alone or together with different winded drive coils.
Zetec serves as a single, leading source for both eddy current and ut solutions. Corrosion detection and measurement using eddy current methods. Eddy current probes are classified by the configuration and mode of operation of the test coils. Therangeandnear gapare directly proportional to the diameter of the probe. Eddy current application eddy current is a noncontact method used to inspect nonferromagnetic tubing. Read this document and the documents listed in the additional resources. Included within this eddy current probe catalog you will find the following sections. Eddy current probes can be designed to match the contours of a part or shaped to fit into a fixture for fast and accurate inspections. Nortec 600 eddy current flaw detector users manual this instruction manual contains essential information on how to use this olympus product safely and effectively. A highfrequency rf signal is generated by the driver, sent through the extension and probe cables and radiated from the probe tip. A proximity system consists of an eddy current probe, extension cable and driver. The cmss 785 system is an eddy current type noncontact displacementvibration system, used for measuring shaft vibration, axial position, rotating speed and phase from small rotating machinery to large. Eddy current probes be carefull lower frequency can burn the coil of probe use 2mhz as central frequency and using sloted standard hocking 29a029 for example try to find out better response using f controls. Zetec is the industry leader for costeffective eddy current testing ect in complex applications.
Eddy current transducer installation part 1radial vibration. From detecting extremely small defects to inspecting nonflat surfaces and covering a wide area in a single pass. For nearly 50 years, zetec has manufactured over 10,000 probe designs to meet the changing needs of the nondestructive testing ndt market. Wearable flexible eddy current probe array for inspecting. Keep this instruction manual in a safe, accessible location. Olympus offers more than 10,000 standard and customdesigned eddy current probes, standard references, and accessories. In this technique, the probe is excited with an alternating current, inducing eddy currents in the part under inspection. All brands are trademarks or registered trademarks of their respective owners and third party entities. A one year warranty is applicable for all eddy current probes and reference standards. To view additional table columns, slide right side of table to the left.
Data is collected as the probe is manually withdrawn from the tube. Its size allows inspections to be performed in confined space and the lightweight design helps prevent fatigue when a large. Under contract with the electric power research institute epri, southwest research institute swri developed a patentpending flexible probe array fpa configured in a glove that can be worn by an inspector. Each of these kits are designed to meet the needs of our customers and their business. Position the probetarget gap to the midpoint of the range. Its size allows inspections to be performed in confined space and. After removing sample tubes to confirm the inspection results, a determination of corrective action. This is a graphical representation of the complex probe impedance where the abscissa x value represents the resistance and the ordinate y value represents the inductive reactance. Note that cracks must interrupt the surface eddy current flow to be detected. Product certifications certifications apply when product is marked. An introduction to eddy current testing theory and technology joseph m.
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