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A Method Based on Virtual Wave Front for Acoustic Emission Source Location in Laminates

Liu, Z. D. 1, Pang, B. J. 1, Tang, Q.1
Affiliation data not available1

Document details

Publishing year2009 PublisherESA Publishing typeConference Name of conference5th European Conference on Space Debris
Pagesn/a Volume
H. Lacoste


The sensor systems to detect impacts on spacecraft promote a demand for acoustic emission (AE) source location method in laminates. Based on the principle of virtual wave front, a new AE source location method for the laminates is derived, a univariate function is used to present the location problem. Experiments have also been carried out on both unidirectional and bidirectional glass fiber reinforced epoxy composites laminates using both lead-break and hypervelocity AE source. The experimental results indicate that: this method can be used in the laminates effectively, when the wave velocity in the plate is lower, the location precision will be higher, and compare with using 3 transducers, 4 transducers can obtain a better result, more accurate results can be obtained for hypervelocity experiments. The results provide a reference for the development of the sensor systems to detect impacts on spacecraft.