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This section provides an overview for eddy current flaw detectors as well as their applications and principles. Also, please take a look at the list of 19 eddy current flaw detector manufacturers and their company rankings. Here are the top-ranked eddy current flaw detector companies as of December, 2024: 1.Centurion NDT, 2.OKOndt, 3.ACTUNI CO.,LTD.
Table of Contents
Eddy Current Flaw Detectors are devices that use eddy currents to measure flaws in objects.
It can nondestructively inspect metal products for defects such as cracks, breaks, and scratches. There are various types of flaw detectors, including magnetic particle detectors, penetrant detectors, and ultrasonic flaw detectors, in addition to Eddy Current Flaw Detectors.
Among these, Eddy Current Flaw Detectors are easy to operate and feature non-contact measurement. They are also used for inspecting aircraft and automobiles, as well as for testing conductivity and the thickness of thin films. This is because not only flaws but also conductivity and film thickness are related to changes in eddy currents.
Eddy Current Flaw Detectors are mainly used to inspect scratches and defects on the surface of metal products. In addition to defect inspection, they can also be applied to paint and plating film thickness. Eddy Current Flaw Detectors are used for the following five purposes
Used to check for surface cracks in forgings, which is a processing method for metal products, and for cracks caused by heat treatment; to check for cracks, chips, and other defects in sintered parts; to inspect wire rod, pipe, and round bar for surface defects; and to inspect the surface of bearing balls and rolls. 2.
Used to identify changes in alloy mixing ratios and to determine whether or not a material has been quenched. 3.
Inspection of wall thinning of pipe products, cracks under painted surfaces, and cracks in welds of bridges and steel frame construction are some of the applications of eddy current flaw detector.
Uniformity of paint and plating thickness is required. The eddy current flaw detector can detect changes in thickness.
Metal contamination of resin products can be inspected with an eddy current flaw detector.
Eddy Current Flaw Detector first generates magnetic flux by passing an electric current through a coil. When the coil, which has generated a magnetic flux, is brought close to the object to be inspected, an eddy current is generated on the surface to be measured. This is due to magnetic induction.
The eddy currents generated on the inspected object vary depending on the presence or absence of scratches or defects. This is because surface defects cause distortion in the eddy currents, which should be uniform. Therefore, Eddy Current Flaw Detectors determine the presence or absence and size of flaws by the changes in the eddy currents generated in the inspected object.
Measurement methods such as Eddy Current Flaw Detectors enable non-contact, nondestructive inspection of objects. This inspection method is suitable for continuous product inspection work and is widely used in the aircraft and automobile industries. It is also used to check for scratches and surface conditions on metal products.
However, because it uses electromagnetic induction, it is not possible to inspect outside the effective range of the magnetic field generated. Although non-contact inspection is possible, the inspection range is limited to the vicinity of the product surface only.
Eddy Current Flaw Detectors have six major features.
Eddy Current Flaw Detectors can inspect any conductive material. Not only magnetic materials such as ferrous materials, but also nonferrous, non-magnetic materials can be inspected.
Eddy Current Flaw Detectors can inspect not only the surface but also near-surface defects. Magnetic materials can be inspected down to about 0.1 mm from the surface, and non-magnetic materials can be inspected down to about 2 mm from the surface.
For long products, inspection can be performed in a short period of time. It is also suitable for on-line inspection by incorporating it into the production line.
Eddy Current Flaw Detector is not only a non-destructive inspection, but also a non-contact inspection that does not touch the product. The inspection is performed while maintaining a clearance of 1 mm or less with the object to be inspected.
Eddy Current Flaw Detectors use magnetic induction for inspection, so the temperature of the product does not matter. It is also possible to inspect products with high temperature, such as bar materials immediately after being drawn. Eddy Current Flaw Detectors are also suitable for inspecting fine wires and bore diameters, depending on the shape of the detection coil.
Eddy Current Flaw Detectors output inspection results as electrical signals. By setting up a program to detect changes in the electrical signal, the inspection process can be easily automated.
*Including some distributors, etc.
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Centurion NDT was established in 1992 and is headquartered in Rolling Meadows, Illinois is a manufacturer and designer of portable eddy current and ultrasonic instrumentation. The company offers a diverse product catalog, including aircraft wheel turntables, bolt hole scanners, and ultrasonic thickness gauges. These products find application in crack detection in aluminum projectiles using wide scan probes, detecting cracks in carbide cutters after profiling, and checking for cracks in threaded propeller hubs.
OKOndt was established in 1993 and is headquartered in Rockville, Maryland, USA, as a manufacturer of non-destructive testing (NDT) equipment. The product list of the company consists of Eddy Current Double Rail Flaw Detector, Portable Eddy Current Flaw Detector, and Right angle surface probe, among others. The products are used for various inspection purposes, including detecting hidden sub-surface flaws and surface defects, monitoring railway track defects, and performing visual, penetrant, and ultrasonic testing. The company caters to the railroad, aircraft, oil and gas, metallurgy, machine engineering, and power industries.
NOMO Group, Inc., founded in 2009, and based in South America, is a distributor of nondestructive testing, heat treatments, welding equipment, and consumables. The company offerings include instruments like the sentinel model 880 delta, finder testing equipment, and Labino line products. Nondestructive testing inspects materials for defects without altering their original structure, ensuring their safety in everyday use. These products and services cater to industries ranging from aerospace, petrochemical, manufacturing, and automotive to consumer products. The company supports its customers' growth by providing timely supply and strong vendor relationships.
UniWest, founded in the United States in 1985, is a supplier of Eddy Current Instruments and NDT Solutions. The company's product portfolio includes Eddy Current Testing (ECT) Equipment, Portable and Benchtop Instruments, Eddy Current Probes and Coils, Advanced NDT Software, and Eddy Current Flaw Detection. It serves industries such as Manufacturing and Production, Oil and Gas, Power Generation, Construction and Building, and Electronics and Technology. It also provides technical guidance, installation, and calibration.
NDT Supply is a supplier of non-destructive testing (NDT) equipment and consumables. With a founding year in 1981, the company operates from its headquarters in Lenexa, Kansas, USA. The company's main activities involve offering a comprehensive range of NDT equipment and supplies such as Barkhausen Noise - Stress Measurement, Blacklights / UV Lamps / Meters, Bond Testing and Borescopes / Remote Visual Inspection. NDT Supply's product range includes penetrant testers, ultrasonic flaw detectors, and radiography equipment that serves various industries like aerospace, automotive, and construction. Its main services encompass delivering multiple NDT solutions including equipment, accessories, and training.
MARKTEC Corporation, founded in 1955 as Tokushu Toryo Co. Ltd., and based in Tokyo, Japan, is a manufacturer and seller of fluorescent paint and metal testing materials. The company offers a wide range of products for Penetrant Testing such as Dye Penetrant Flaw Detection Material, Magnetic Particle Testing, Eddy Current Testing, Ultraviolet Light Testers, and many more. The company’s products serve various industries such as automobile, construction, steel, and heavy industries among others. It holds the ISO 9001:2015 and ISO 14001: 2015 certifications.
Aerica Engineering Pvt. Ltd., founded in 2020 and headquartered in Mumbai, Maharashtra, India, is a manufacturer and supplier of engineered devices for inspection, survey, and inspection of building and underground structure integrity. The company's core products include drain pipe inspection cameras, inspection camera kits, and fiber optic spectrum testers. It also offers a range of hardness and coating equipment such as ultrasonic thickness gauges, ultrasonographic flaw detectors, and electropotential crack depth meters. The company welcomes bulk orders and wholesale customers and offers full OEM services.
HUATEC Group, established in 2000, based in Beijing, China, is a reputable manufacturer and supplier of testing instruments. The company products portfolio includes a variety of metal and non-metal testing equipment, such as portable hardness tester, micro hardness tester, portable X-ray flaw detector, digital ultrasonic flaw detector, and ultrasonic thickness gauge, among others. Their employees include highly trained engineers for sales and services who offer satisfactory products and prompt services to home and abroad customers. The company has two sister factories located in the area of Beijing, Liaoning, Shandong, and Guangzhou.
ETherNDE, founded in the UK in 2010, is a manufacturer of Eddy Current Testing (ECT), non-destructive testing NDT equipment, probes, and accessories. The company offers a diverse array of ECT equipment, including flaw detectors, test systems, data acquisition units, and imaging solutions for precise material inspections, a wide selection of ECT probes and sensors tailored for various NDT applications, such as surface inspections, tubing examinations, and weld assessments and NDT accessories, including cables and connectors.
Actuni Co., Ltd., established in 1960 with headquarters in Osaka, Japan, is a manufacturer of inspection equipment and security systems. The company's product line includes digital recording devices, surveillance cameras, RFID systems, shoplifting prevention tags, and HD video conferencing systems. These products are used by retail stores to prevent theft as well as commercial organizations to enforce security procedures. It also offers contract production of eddy current flaw detection, foreign material detection and measurement equipment used to detect surface flaws on metals and bearings.
Russell Technologies India Pvt. Ltd, established in 2009 in New Delhi, India, is a manufacturer and supplier of NDT equipment and accessories. The company specializes in the design and manufacture of NDT equipment, offering ultrasonic flaw detectors, magnetic particle testing equipment, radiographic testing instruments, and eddy current testers. It holds ISO 9001:2015 certification, and its products benefit customers by allowing precise and stable testing and inspection of materials without causing damage. These NDT solutions find applications in aerospace, automotive, construction, and manufacturing, where non-invasive testing methods are essential for ensuring the safety and quality of materials.
TMTeck Instrument Co., Ltd founded in Beijing, China, in 2007, is a manufacturer and supplier of inspection and measuring equipment. Products offered by the company are coating thickness gauges, ultrasonic flaw detectors, leeb hardness testers, and darkroom accessories. Its Leeb hardness tester is a portable, non-destructive testing device used to measure the hardness of materials, primarily metals. The company has a 300 square meters factory workshop and its products are EU and Russian GOST certified.
Ashtead Technology Rentals is a subsea equipment rental and solutions provider that was established in 1985 and is headquartered in Westhill, Aberdeenshire, UK. The company specializes in offering a wide range of advanced technology and rental services. The company’s products include survey and robotics, mechanical solutions, and asset integrity. Its products are used by various industries, including offshore renewable energy and later-life oil and gas. The company also offers a wide range of services, including engineering, installation, and training.
Evident Corporation is a scientific research and development company in Shinjuku, Tokyo that was established in 2008. Formerly known as Olympus Scientific Solutions, the company specializes in developing cutting-edge technology and products for various industries, including aerospace, automotive, electronics, energy, and medical research. Evident Corporation has proliferated and expanded its product offerings and services to meet the needs of its customers. Their product offerings include non-destructive testing (NDT) solutions such as thickness gauges and automated inspection systems, XRF analyzers like handheld XRF analyzers, industrial microscopes, and video scopes and borescopes.
RSL NDT Ltd, founded in Aberdeen, UK in 1989, is a supplier of NDT products. The company offers equipment for the main NDT disciplines including; Ultrasonic Testing, Eddy Current Testing, Hardness Testing, and Thickness Testing. Its products are used for verifying the quality of manufactured products, the integrity of critical infrastructure, including pipelines, refineries, and power plants, and the inspection, maintenance of aircraft components and structures and the safety and reliability of bridges,
Oceanscan Ltd., founded in the UK in 1989, is a supplier of advanced hydrographic survey equipment, ROV Sensors, non-destructive testing, and inspection systems. The company offers a wide variety of survey equipment, including multibeam echosounders, bathymetric systems, and data acquisition tools for precise marine and underwater mapping, a range of sensors for remotely operated vehicles (ROVs) and autonomous underwater vehicles (AUVs), including sonar, imaging, and positioning sensors and NDT equipment and solutions for testing and inspecting materials.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Centurion NDT |
13.9%
|
| 2 | OKOndt |
9.0%
|
| 3 | ACTUNI CO.,LTD |
7.5%
|
| 4 | Nomogroup, Inc. |
7.2%
|
| 5 | Russell Technologies India Pvt. Ltd |
6.5%
|
| 6 | MARKTEC Corporation |
6.0%
|
| 7 | UniWest |
5.7%
|
| 8 | HUATEC Group |
5.5%
|
| 9 | Aerica Engineering Priate Limited |
5.0%
|
| 10 | ETherNDE |
4.7%
|
Derivation Method
The ranking is calculated based on the click share within the eddy current flaw detector page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 29.4% |
|
China
|
4 | 23.5% |
|
India
|
3 | 17.6% |
|
United Kingdom
|
3 | 17.6% |
|
Japan
|
2 | 11.8% |
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