Any discontinuities or material property variations that change the eddy current flow in the part are detected as potential defects by the probe. We offer more than 10,000 standard and custom designed eddy. Selfnulling eddy current probe for surface and subsurface flaw detection b. The area within 3 probe diameters to the sides and 1,5 diameters behind should be kept clear of any metallic objects other than the object to be measured. If there is a flaw parallel to the weld line, the eddy current in the test. The authors have developed a uniform eddy current probe 15. Eddy current sensors uses the principle of eddy current formation to sense displacement. They are used for sorting metals and alloys, determining heattreatment condition, and finding damaged areas. This section gives a short description on how to build a probe part number. Features include speed ranges from 600 to 3000 rpm, frequency ranges from 100 hz to 6 mhz, multiple connector types, and multiple probe types, our scanners offer a full range of application solutions. The solution is designed to scan metals as thick as. The high performance eddy current bolt hole scanners are available for use with nortec eddy current flaw detectors. Eddy current probes and application guide olympus ims. Eddy current probe sensitivity as a function of coil.
To ensure that an eddy current of sufficient strength passes through the volume of the component under. The result is a on site calibration with an accuracy in the dimension of our laserinterferometric factory calibration. We offer more than 10,000 standard and custom designed eddy current probes, standard references, and accessories. Dual element sliding probe absolute reflection this probe is designed to slide over rows of fasteners to detect flaws. 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. Rotating plastic scanner probes rotating plastic scanner probes feature a variety of expandable plastictip probes and stainlesssteel. Optimization criterion the optimization criterion is to maximize the figures of merit s and d, given by auld 1. This section features many of the standard design probes that are available in a wide range of diameters, frequencies, and connector styles. Olympus conductivity probes with powerlink technology are designed to be used with nortec 600 series instruments. We offer a wide selection of bobbin probes for quick tubing inspections. Eddy current probes are available in a large variety of shapes and sizes.
A wide variety of eddy current probes options are available to you, such as auto testing machine. The relative motion causes a circulating flow of electrons, or currents, within the conductor. Low frequency probes eddy current probes techna ndt. 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. Its size allows inspections to be performed in confined space and. Probes are backward compatible with earlier versions of nortec instruments, such as the ndt19e and ndt. Ge eddy current probes and accessories eddy current testing is different from other nondestructive testing method in one important respect. The patentpending solution features a stateoftheart portable instrument with realtime cscan imaging, fast data acquisition, as well as gridmapping and dynamic scanning modes. During tube inspection, multifrequency eddy currents can locate and size defects under support plates and on the tube sheet. Welcome to the premier industrial source for probes. Innovative flexible eddy current probes for the inspection of. Eddy current probes, flexible, array, magnetic sensor. One conductivity probe 9222340 u8690027, standard 9522103.
All specifications are subject to change without notice. Probes standard and custom criterion ndt produces a wide variety of eddy current probes used for inspection of critical or essential components. 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. Optimal performance in your eddy current test is insured by selecting the right type of probe and one that is meticulously made. We offer more than 10,000 standard and custom designed eddy current probes, standard refe. This document and the information contained are olympus ssd property and shall not be. An eddy probe system comprises a probe, a driver oscillator demodulator, and an extension cable. Eddy probe systems have excellent frequency response.
They are also fitted with a triax detachable connector but can be fitted with a 2pin microdot or 4 pinfischer connector or other connectors on request. Heat exchanger tube inspection eddy current technology. Some of the common classifications of probes based. Bahr, novel eddy current probe development, sri international report afwaltr814159 to air force wright aeronautical laboratories, wrightpatterson afb. The result is a onsite calibration with an accuracy in the dimension of our laserinterferometric factory calibration. In this technique, a coil also called probe or sensor is excited with sinusoidal alternating current frequency, f, 50 hz5 mhz, 100 ma. Using stainless steel for strength, a shielded coil was placed at the tip. We offer a wide range of standard eddy current probes and coils for a complete range of eddy current instruments.
The eddy current sensor and the reference sensor are aligned accurately to each other. As mentioned on the previous page, eddy current probes are classified by the configuration and mode of operation of the test coils. For the rcs thruster inspection, important factors concerning the eddy current probe design include the use of one or more coils secondary coils as reference coils, coil orientations three different axial directions with respect to the cavity, coil dimension, and probe frequency 1 50 khz. Investigation of eddy current testing of weld zone by uniform. Lshaped probe for subsurface flaws detection in the second layer, through the first layer with up to 1. This section features many of the standard design probes. In addition, we can also offer custom id tubing probes, cables and adapters, reference blocks and other various accessories, such as shippingstoragecarrying cases. Straight shaft probe for subsurface flaws detection in the second layer, through the first layer with up to 1. Nortec 500 eddy current flaw detectors incorporate a full range of features.
All brands are trademarks or registered trademarks of their respective owners and third party entities. The companies featured in the following listing offer a comprehensive range of probes. A complete line of eddy current probes to choose from. Eddy current testing ect as a technique for testing finds its roots in electromagnetism. Products include ultrasonic and eddy current systems, cscan systems, automotive part testing and aircraft wheel inspection systems. Eddy current, as well as a variety of related products and services. Eddy current technique ect is a powerful method of inspection of metal parts, not only for the detection of small surface notches, but also for the detection of subsurface defects.
Eddycurrent probe design 173 direction orthogonal to the direction of the initial liftoff im pedance change 6zt as shown in figure 2. They can be used to find generic subsurface defects. Eddy current array eca technology allows the electronic driving and reading of several eddy current sensors positioned sidebyside in the same probe assembly. Eddy current probes ndt and inspection product and. Steel parts, steel billet, round steel, bar, pipe, weld, cable and other products testing 2. The frequency setting determines the frequency of the eddy current probe. Eddyfi lyft, which completely reinvents pulsed eddy current pec technology. These are normally fitted with a triax detachable connector but can be fitted. Note that cracks must interrupt the surface eddy current flow to be detected. For the test, we constructed a special highimpedance cable. Scanning with an eddy current weldscan probe the active part of the probe is 3 3 mm. With the new tx series, eddylab is introducing a fully digital device incorporating usb, can and a highspeed analogue interface.
Eddy current is a noncontact method used to inspect nonferromagnetic tubing. The innovative system is composed by a new type of eddy currents probe, electronic devices for signal. Eddy current probe catalog introduction 6 every section in this probe catalog begins with a short description of the different eddy current products available. The authors improved the uniform eddy current probe in order to detect the flaws at the weld zone. Xprobe and cxb array probes to quickly find and characterize all flaws. Flexible shaft surface probes type coil tip angle length drop frequency shaft size connector part id item n.
Eddy current technology manufactures heat exchanger probes to inspect heat exchanger tubes both ferrous and nonferrous, with probe diameters ranging from 0. 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. Plus significantly reduce dose and radiation waste. Features include speed ranges from 600 to 3000 rpm, frequency ranges from 100 hz to 6 mhz, multiple connector types, and multiple probe types, our scanners offer a. Figure 11 thin probe to inspect between two lugs spaced less than.
Note that the bridge actually measures 6z fz and 6zt iz. Eddy currents are formed when a moving or changing magnetic field intersects a conductor or vice versa. It has been designed to make the inspection of fastener holes accurate and quick. If there is a special probe you are looking for you will find it at ndt solutions, llc. It is mounted through or to the side of a bearing cap and observes the shafts movement relative to its mounting position. Supply nondestructive examination nde equipment, instrumentation and accessory components. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The eddy current aray applied to the defect detection on. Probes must be mounted to avoid interaction between the sensing field and the mounting hardware. A oneyear warranty is applicable for all eddy current probes and reference. General purpose eddy current probe for detection of surface and near surface defects around protruding head fasteners and other structures in aircraft structures030. Ect began largely as a result of the english scientist michael faradays discovery of electromagnetic induction in 1831.
Selfnulling eddy current probe for surface and subsurface. Olympus eddy current probes consist of the acquired brands of nortec and ndt engineering. Data acquisition is made possible through the use of multiplexing, which avoids mutual inductance between the individual sensors. We can also design probe kits to meet your inspection needs and budget requirements. Eddy current probes are particularly suitable devices for noncontact measurements on metallic targets. Two detector coils are connected for the differential, thus the probe has very little noise from weld zone. In these tests we also used a nortec spo206s coiltype reflection probe. 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. The rectangular planar coils have a maximum testing area of 2. Sensitive and accurate we also manufacturer ndt probes according to customers requirements.
The uniform eddy current probe type 1 is applied to inspection of the weld zone inducing the eddy current perpendicular to the weld line as shown in figure 3 a. A novel flexible eddycurrent probe with high sensitivity. Probe innovations improve inspection efficiencies with combo and high stability xprobes zetecs combination array and bobbin probes help save time and money. Flaw detectors, olympus portable eddy current flaw detector. Ring bridgedifferential probes have the same characteristics as their spot probe counterparts but are useful for inspections around fasteners. Investigation of eddy current testing of weld zone by. We report the results of the first phase of a study designed to quantify the relationship between eddy current coil construction and the performance of these coils used in nondestructive evaluation nde inspections. Since 1968, zetec has manufactured over 10,000 different probe designs to meet the constantly changing needs of the nondestructive testing ndt market. We serve the needs of major manufacturers in the automotive, medical, and industrial markets. Molded wheel probe wheel and molded wheel probe probe guide contact information. Eddy current probes are classified by the configuration and mode of operation of the test coils.
Nortec eddy current probes are designed and manufactured by olympus ndt in the usa. Olympus extensive line of high performance eddy current scanners is available for use with nortec. The uniform eddy current probe is much less influenced by variations of the probe liftoff and the electromagnetic characteristics of the test material than the conventional pancake probe. Each eddy current probe available from ndts has a unique code.
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. The ferrite core coils wound for this study are small but typical of the sizes commonly used in commercially manufactured eddy current probes. In this technique, the probe is excited with an alternating current, inducing eddy currents in the part under inspection. The eddy current bobbin probes are lightweight, economical, but solidly built probes with the coils protected with a plastic sleeve and stainless steel wear guides at front and rear ends. The configuration of the probe generally refers to the way the coil or coils are packaged to best couple to the test area of interest. In fact, one of the major advantages of eddy current inspection is that probes can be custom designed for a wide variety of applications. Principle ec testing works on the principles of electromagnetic induction. We are ready to help you find the exact probe you need to get the job done.
Eddy current rotating scanners eagle wings enterprises. In addition to coil size and frequency, the physical shape of a probe contributes to a successful test. They are ideal for the inspection of heaters, coolers, and heat exchangers. Spot bridge differential spot bridgedifferential probes can be referred to as surface probes, but are a lower frequency than their high frequency counterparts. Different materials can be exchanged easily in a quick release socket. Olympus offers more than 10,000 standard and customdesigned eddy current probes, standard references, and accessories.
In this technique, a coil also called probe or sensor is excited with sinusoidal alternating current frequency, f, 50 hz5. To view additional table columns, slide right side of table to the left. Eddy current probe catalog ndts services provided to order. The site makes it simple and easy to select eddy current probes and accessories used in nondestructive testing ndt. About the company staveley instruments is a us manufacturing company based in kennewick, washington producing a wide range of innovative ndt equipment and sensors.
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