Laser Shearography NDT

Laser Shearography is an optical measurement technique for Non-Destructive Testing (NDT) and Quality Control applications, commonly used on composites and metallic materials. The method is used for defect detection in an expedited manner.

Laser Shearography is a versatile and dynamic solution, applicable to industry, military and research sectors alike. Already used extensively in various industries for an array of functions, Shearography is an applicable technique for the Aerospace, Automotive, Aviation, Civil, Marine, Rail, Textile and Wind Power industries. It is an optimal utility for any advanced technology-based corporation. Shearography actively supports a product’s entire life cycle from research & development, to quality control of componentry during manufacturing, and final product operation while in service.

Shearography is an optimal NDT solution, tailored specifically for integrated quality control processes used in the qualification of material structural integrity. Applicable materials include, but are not limited to composite honeycomb; rubber; composite overwrapped pressure vessels (COPV); ceramics; metal honeycombs; carbon-fiber (CFRP) laminates; fiber-metal laminates; bi-metals; foam-cores; and metal-metal bonds. Irrespective and independent of material, size, shape, geometry and component complexity, Shearography systems can be used to inspect defects in the most hard to reach places.

Depending on the material strength and depth of defects within a sample, Shearography can detect most discontinuities that occur in composite structures, including disbonds; delaminations; cracked core; crushed core; kissing bonds; wrinkling; fluid ingresses; porosity; cracks; repair defects; and impact damage (BVIDs). Additional structural information such as ply drops, bulkheads, overlaps, splices, stringers, ribs can also be detected.


Measurement Principle

Laser Shearography non-destructive techniques analyze interferometric images taken under both loaded and unloaded conditions to detect defects in composites and other materials.