Methods and techniques
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.
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.
RTJ Flange Special Ultrasonic Testing
Acoustic emission testing (AE or AT)
Blue Etch Anodize (BEA)
Dye penetrant inspection Liquid penetrant testing (PT or LPI)
Electromagnetic testing (ET)
Alternating current field measurement (ACFM)
Alternating current potential drop measurement (ACPD)
Barkhausen testing
Direct current potential drop measurement (DCPD)
Eddy-current testing (ECT)
Magnetic flux leakage testing (MFL) for pipelines, tank floors, and wire rope
Magnetic-particle inspection (MT or MPI)
Remote field testing (RFT)
Ellipsometry
Guided wave testing (GWT)
Hardness testing
Impulse excitation technique (IET)
Infrared and thermal testing (IR)
Thermographic inspection
Laser testing
Electronic speckle pattern interferometry
Holographic interferometry
Profilometry
Shearography
Leak testing (LT) or Leak detection
Absolute pressure leak testing (pressure change)
Bubble testing
Halogen diode leak testing
Hydrogen leak testing
Mass spectrometer leak testing
Tracer-gas leak testing method Helium, Hydrogen and refrigerant gases
Magnetic resonance imaging (MRI) and NMR spectroscopy
Near-infrared spectroscopy (NIRS)
Optical microscopy
Positive Material Identification (PMI)
Radiographic testing (RT) (see also Industrial radiography and Radiography)
Computed radiography
Digital radiography (real-time)
Neutron radiographic testing (NR)
SCAR (Small Controlled Area Radiography)
X-ray computed tomography (CT)
Scanning electron microscopy
Surface Temper Etch (Nital Etch)
Ultrasonic testing (UT)
ART (Acoustic Resonance Technology)
Electro Magnetic Acoustic Transducer (EMAT) (non-contact)
Laser ultrasonics (LUT)
Internal rotary inspection system (IRIS) ultrasonics for tubes
Phased array ultrasonics
Time of flight diffraction ultrasonics (TOFD)
Time of Flight Ultrasonic Determination of 3D Elastic Constants (TOF)
Vibration Analysis
Visual inspection (VT)
Pipeline video inspection
Corroscan/C-scan
IRIS – Internal Rotary Inspection System
3D Computed Tomography
Industrial CT Scanning
Heat Exchanger Life Assessment System