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1994
Conference Paper
Title
Measurement of internal friction in polycrystalline materials using laser-generated ultrasound
Other Title
Messung der inneren reibung in polykristallinen Materialien mittels Laserultraschall
Abstract
A new technique is presented allowing one to measure ultrasonic absorption in a wide temperature range in polycrystalline materials and even in single crystals, by generating reverberation fields by short laser pulses, and by observing their decay using optical interferometers for detection.