Optical Metrology
- Chromatic Sensors
- Displacement Gages
- Ellipsometers
- Interferometers
- Laser Vibrometers
- Optical Frequency Combs
- Optical Surface Profilers
- Polarimeters
- Refractometers
- Strain Gages
- Thickness Measuring Systems
- Metrology Accessories
- Laser Micrometers
- Shearography Systems
- Scatterometers
- Video Micrometers
- Laser Gyroscopes
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Shearography Systems
Frequently Asked Questions
Shearography is a non-destructive testing technique that uses laser interferometry to detect surface deformation and measure the strain of an object.
Shearography is fast, non-intrusive, and can detect defects that are not visible to the naked eye. Shearography is also sensitive to subsurface defects, making it useful for inspecting composite materials, which are commonly used in aerospace and automotive applications.
Shearography systems are commonly used in industries such as aerospace, automotive, and civil engineering to detect defects in materials and structures. Some common applications of shearography systems include inspecting aircraft and automobile components, such as wings, fuselages, and engines. Shearography can also be used to inspect pipelines, bridges, and other civil engineering structures for defects.
Shearography works by emitting a coherent beam of light onto the surface of the object being tested. The interferometer measures the phase difference between the two beams produced by the light, which is proportional to the surface deformation of the object. The camera records the interferometric fringe pattern produced by the recombined beams, which is then processed by the computer to produce a shearogram.
Shearography can detect defects such as cracks, delaminations, and voids in materials and structures. It can also detect changes in the material properties, such as thermal expansion, that can cause stress and deformation.
Shearography is different from other non-destructive testing techniques in that it is sensitive to subsurface defects and can detect defects that are not visible to the naked eye. Shearography is also fast and non-intrusive, making it ideal for inspecting large structures and components.
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