Water leaching ultrasonic lossless measurement method of reflection/transmission coefficient of plate structure

摘要: The invention discloses a water leaching ultrasonic lossless measurement method of reflection/transmission coefficient plate structure, and belongs to the field testing mechanical properties materials. comprises following steps: making three piezoelectric sensors in same specification as excitation sensor receiving by utilizing PVDF (Polyvinylene Fluoride) thin film material, carrying out on surface 'liquid/solid/liquid' structure wave excited bythe sensor, sensors; extracting signals, data processing, finally obtaining frequency/amplitude spectrum coefficient. During measurement, dual are adopted, diffusion attenuation generated during propagation process sound waves can be compensated, so that more accurate result acquired. disclosed is simple convenient operate, carried structure.