Haberer, B.B.HabererArnold, W.W.ArnoldWillems, H.H.WillemsPaul, M.M.Paul2022-03-092022-03-091994https://publica.fraunhofer.de/handle/publica/322770A 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.enabsorptionattenuationinnere Reibunginternal frictionlaser ultrasonicsLaserultraschallNachhall-Methodereverberation methodUltraschallUltraschallschwächungultrasonics620658670Measurement of internal friction in polycrystalline materials using laser-generated ultrasoundMessung der inneren reibung in polykristallinen Materialien mittels Laserultraschallconference paper