LSP
Laser Speckle Photometry
LSP – Laser Speckle Photometry is an optical non-destructive technique for monitoring material characteristics including hardness, porosity, defects and stresses. The technique was developed at the Fraunhofer IKTS in Germany.
Speckle patterns are produced when laser (coherent) light illuminates a diffuse surface and the reflected light produces a random interference known as a speckle. Movement of the surface will cause fluctuations in the intensity of the speckle pattern. Such movement can be generated mechanically or thermally and the changes produced in the speckle pattern can be correlated with the characteristics of the test object.
For more information on Laser Speckle Photometry see:
www.ikts.fraunhofer.de/en/industrial_solutions/non-destructive_testing/optical_methods.html
WHAT THE HEC?! articles are not intended to be the definitive account on the topic or acronym in question. Readers’ comments and contributions are welcomed. Email: ndtnews@bindt.org
Speckle patterns are produced when laser (coherent) light illuminates a diffuse surface and the reflected light produces a random interference known as a speckle. Movement of the surface will cause fluctuations in the intensity of the speckle pattern. Such movement can be generated mechanically or thermally and the changes produced in the speckle pattern can be correlated with the characteristics of the test object.
For more information on Laser Speckle Photometry see:
www.ikts.fraunhofer.de/en/industrial_solutions/non-destructive_testing/optical_methods.html
WHAT THE HEC?! articles are not intended to be the definitive account on the topic or acronym in question. Readers’ comments and contributions are welcomed. Email: ndtnews@bindt.org
