NDT is divided into various methods of nondestructive testing, each based on a particular scientific principle. These methods may be further subdivided into various techniques. The various methods and techniques, due to their particular natures, may lend themselves especially well to certain applications and be of little or no value at all in other applications. Therefore choosing the right method and technique is an important part of the performance of NDT.
- Acoustic emission testing (AE or AT)
- Electromagnetic testing (ET)
- Ellipsometry
- Guided wave testing (GWT)
- Hardness testing
- Impulse excitation technique (IET)
- Infrared and thermal testing (IR)
- Laser testing
- Leak testing (LT) or Leak detection
- Magnetic resonance imaging (MRI) and NMR spectroscopy
- Optical microscopy
- Positive Material Identification (PMI)
- Radiographic testing (RT)
- Scanning electron microscopy
- Ultrasonic testing (UT)
- Visual inspection (VT)
- Pipeline video inspection
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| An example of a 3D replicating technique. The flexible high-resolution replicas allow surfaces to be examined and measured under laboratory conditions. A replica can be taken from all solid materials. |
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