A method based on acoustic emission for locating debris cloud impact

Zhidong Liu; Baojun Pang

doi:10.1117/12.851524

14 April 2010 A method based on acoustic emission for locating debris cloud impact

Zhidong Liu, Baojun Pang

Author Affiliations +

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75220T (2010) https://doi.org/10.1117/12.851524
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

Due to the threat of impact to spacecraft from space debris and meteoroid, space debris and meteoroid shields have been raised and used in many spacecrafts. In order to conduct an assessment of spacecraft module-wall damage impacted by debris cloud created by space debris and meteoroid high-velocity impact on the shields, it's necessary to develop a location method for the debris cloud impact. The method based on virtual wave front for acoustic emission source location has been investigated and extended to locate the impact position of the debris cloud. Debris cloud hypervelocity impact experiments were conducted by using a two-stage light gas gun, the experimental results indicate that: The signals induced by debris cloud contain a0, s0, s2 mode wave, the virtual wave front location method can be extended to locate the impact position of the debris cloud effectively, the AE signals contain more high frequency components than AE signals created by single projectile impact event. The results provide a reference for the development of the sensor systems to detect impacts on spacecraft.

Citation Download Citation

Zhidong Liu and Baojun Pang "A method based on acoustic emission for locating debris cloud impact", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75220T (14 April 2010); https://doi.org/10.1117/12.851524

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