作者: Vladimir Ravitch , Arie Ariav , David Nitsan
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摘要: A method and apparatus for detecting a predetermined condition of panel by transmitting cyclically-repeating energy wave through the material (41) from first location (43a) to second (43b); measuring transit time form fist location; utilizing measured detect including force on, temperature of, deformation in, fatigue or fracture structural panel, presence applied to, water breakage in panel.