Different types non-destructive testing methods

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FALCON LABORATORY
Different types non-destructive testing methods
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1. Acoustic Emission Testing (AE)

• This testing technique utilizes an electric flow
  or magnetic field which is gone through a
  conductive part. There are three kinds of
  electromagnetic testing, including eddy current
  testing, alternating current field estimation
  (ACFM) and remote field testing (RFT). Eddy
  current testing utilizes an exchanging current
  coil to initiate an electromagnetic field into
  the test piece, alternating current field
  estimation and remote field testing both utilize
  a test to present a magnetic field, with RFT
  generally used to test pipes.

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2. Ground Penetrating Radar (GPR)

• This geophysical NDT technique sends radar beats
  through the outside of a material or subsurface
  structure, for example, rock, ice, water or soil.
  The waves are reflected or refracted when they
  experience a covered object or material limit
  with various electromagnetic properties.

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3. Laser Testing Methods (LM)

• Laser testing falls into three classifications
  including holographic testing, laser profilometry
  and laser shearography. Holographic testing
  utilizes a laser to recognize changes in the
  surface of the material which has been exposed to
  pressure, for example, warmth, weight or
  vibration. The results are then compared with a
  whole reference sample to show defects. Laser
  profilometry utilizes a fast pivoting laser light
  source and small scale optics to detect
  corrosion, pitting, disintegration and cracks by
  identifying changes in the surface by means of a
  3D picture generated from the surface geography.

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4. Leak Testing (LT)

• Leak testing can be separated into four distinct
  strategies - bubble spill testing, pressure
  change testing, halogen diode testing, and mass
  spectrometer testing. Bubble leak testing
  utilizes a tank of fluid, or a soap solution for
  bigger parts, to distinguish gas (typically air)
  leaking from the test piece as bubbles. Just
  utilized on closed systems, pressure change
  testing utilizes either pressure or a vacuum to
  screen the test piece. A deficiency of pressure
  or vacuum over a set time span will show that
  there is a leak in the system.

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