Apparatus and a method for measuring in-plane elastic constants for a laminate

摘要

An apparatus is provided that includes a wave generator, plurality of transducers and processing device. The wave generator may be configured to simultaneously generate a plurality of acoustic waves that propagate through a laminate along a plurality of in-plane directions. The transducers may be spaced apart from one another and positionable at one or more known distances from the wave generator along respective in-plane directions. The transducers may be configured to detect acoustic waves propagating through the laminate along the respective in-plane directions. The processing device may be coupled to the transducers and configured to simultaneously calculate a plurality of elastic constants of the laminate as a function of velocities of the acoustic waves detected by the transducers. And the processing device may be configured to calculate the velocities as a function of the known distance(s) and arrival times of the acoustic waves at the transducers.

主权项

1. An apparatus comprising:
an acoustic wave generator configured to simultaneously generate a plurality of acoustic waves that propagate through a laminate along a plurality of in-plane directions; a plurality of acoustic transducers spaced apart from one another and positionable at one or more known distances from the acoustic wave generator along respective in-plane directions, the acoustic transducers being configured to detect acoustic waves propagating through the laminate along the respective in-plane directions; and a processing device coupled to the acoustic transducers and configured to simultaneously calculate a plurality of elastic constants of the laminate as a function of velocities of the acoustic waves detected by the acoustic transducers, the processing device being configured to calculate the velocities as a function of the one or more known distances and arrival times of the acoustic waves at the acoustic transducers.