Pond Science Institute

Interferometer Detects Acoustic Emissions in Composites


Acoustic emission in prestressed composite panels has been detected using embedded single mode optical fibers. Static loading of the composite matrix produces acoustic emission events, pulsed ultrasonic waves, which mechanically modulate the embedded fiber geometry and phase modulate the transmitted optical field. This modulation is detected by optical interferometry and Fourier optical processing techniques to produce an electronic signal proportional to acoustic field amplitude integrated along the length of the fiber in the specimen. NASA Tech Brief. 8.5" x 11"

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  • Model: N0071192
  • Shipping Weight: 0.1lbs
  • 1000 Units in Stock
  • Manufactured by: NASA

This product was added to our catalog on Thursday 14 October, 2010.

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