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  2. Eddy-current testing - Wikipedia

    en.wikipedia.org/wiki/Eddy-current_testing

    Eddy current testing (ECT) as a technique for testing finds its roots in electromagnetism. Eddy currents were first observed by François Arago in 1824, but French physicist Léon Foucault is credited with discovering them in 1855. ECT began largely as a result of the English scientist Michael Faraday's discovery of electromagnetic induction in ...

  3. Nondestructive testing - Wikipedia

    en.wikipedia.org/wiki/Nondestructive_testing

    Non-Destructive Testing (NDT/ NDT testing) Techniques or Methodologies allow the investigator to carry out examinations without invading the integrity of the engineering specimen under observation while providing an elaborate view of the surface and structural discontinuities and obstructions. The personnel carrying out these methodologies ...

  4. Active thermography - Wikipedia

    en.wikipedia.org/wiki/Infrared_non-destructive...

    Active thermography is an advanced nondestructive testing procedure, which uses a thermographic measurement of a tested material thermal response after its external excitation. This principle can be used also for non-contact [1] infrared non-destructive testing (IRNDT) of materials. [2]

  5. Terahertz nondestructive evaluation - Wikipedia

    en.wikipedia.org/wiki/Terahertz_nondestructive...

    XRay, Optical, and THz image of a packaged IC. [2]Terahertz imaging is an emerging and significant nondestructive evaluation (NDE) technique used for dielectric (nonconducting, i.e., an insulator) materials analysis and quality control in the pharmaceutical, biomedical, security, materials characterization, and aerospace industries.

  6. Alternating current field measurement - Wikipedia

    en.wikipedia.org/wiki/Alternating_Current_Field...

    Alternating current field measurement (ACFM) is an electromagnetic technique for non-destructive testing detection and sizing of surface breaking discontinuities. It was derived from the methods used in eddy-current testing and works on all metals, ferrous or non-ferrous. Since it doesn't require direct electrical contact with the surface it ...

  7. Radiography Testing Equipment Market Expected to Reach USD 2. ...

    lite.aol.com/tech/story/0022/20250122/9335781.htm

    North America leads the global organic radiography test equipment market, projected to grow at a CAGR of 9.8%. The region benefits from top market players and robust R&D initiatives, enhancing the acceptance of non-destructive testing. NTS, with 28 labs across North America, supports medical device manufacturers in meeting essential certifications.

  8. Time-of-flight diffraction ultrasonics - Wikipedia

    en.wikipedia.org/wiki/Time-of-flight_diffraction...

    Time-of-flight diffraction (TOFD) method of ultrasonic testing is a sensitive and accurate method for the nondestructive testing of welds for defects. TOFD originated from tip diffraction techniques which were first published by Silk and Liddington [1] in 1975 which paved the way for TOFD. Later works on this technique are given in a number of ...

  9. Tubular NDT - Wikipedia

    en.wikipedia.org/wiki/Tubular_NDT

    Tubular NDT (nondestructive testing) is the application of various technologies to detect anomalies such as corrosion and manufacturing defects in metallic tubes. Tubing can be found in such equipment as boilers and heat exchangers .