Shearography

Shearography or speckle pattern shearing interferometry is a measuring and testing method similar to holographic interferometry. It uses coherent light or coherent soundwaves to provide information about the quality of different materials in nondestructive testing, strain measurement, and vibration analysis. Shearography is extensively used in production and development in aerospace, wind rotor blades, automotive, and materials research areas. Advantages of shearography are the large area testing capabilities (up to 1 m² per minute), non-contact properties, its relative insensitivity to environmental disturbances, and its good performance on honeycomb materials, which is a big challenge for traditional nondestructive testing methods. Electronic speckle pattern interferometry is one form of shearography.

Read more about Shearography:  Shearing Function, Phase-shift Technology, Applications, Inspection Standards

Other articles related to "shearography":

Shearography - Inspection Standards
... Shearography is referenced in following general standards and codes of practice for NDT BS EN 41792009 NAS 410, 2008 Rev 3 ASNT SNT-TC-1A, 2006 edition ...