ACOUSTIC EMISSION FROM IMPACT-DAMAGED CFRP STRUCTURES UNDER STRESS LOADING
(0) This study examined the applicability of acoustic emission method for the impact damage evaluation of CFRP pressure vessels. AE signals were detected during pressure proof tests of a CFRP pressure vessel before and after the impact test. 15J of impact energy was applied to the vessel by using a drop-weight impact tester. After the impact test, AE event rate during pressurization and pressure-holding period became higher compared to those detected before the impact test. Frequency components of AE signals were also changed after the impact test. From these results, it is assumed that AE method can be used for the impact damage detection of CFRP pressure vessels. Furthermore, location of impact damage might be estimated by AE method since most AE signals were first detected by the AE sensor near the impact damage.
acoustic emission (ae) cfrp pressure vessel impact damage non-destructive evaluation
S.Sugimoto Y.Mizutani A.Todoroki R.Matsuzaki
Department of Mechanical Sciences and Engineering,Graduate School of Science and Engineering, Tokyo Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology
国际会议
南京
英文
119-122
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）