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http://dx.doi.org/10.7234/kscm.2008.21.3.009

Evaluation of Residual Strength of CFRP Pressure Vessel After Low Velocity Impact  

Park, Jae-Beom (국방과학연구소)
Kim, Dong-Ryun (국방과학연구소)
Kim, Hyung-Geun (국방과학연구소)
Hwang, Tae-Kyung (국방과학연구소)
Publication Information
Composites Research / v.21, no.3, 2008 , pp. 9-17 More about this Journal
Abstract
In this paper, the low velocity impact characteristics of filament winding CFRP pressure vessel was investigated using numerical and experimental methods. The cylinder part of CFRP vessel was impacted using triangular shape impactor which simulated the sharp edge of dropping tools and impact response behavior of CFRP was reviewed. The mechanical behavior, such as deformation and stress distribution, were also predicted by explicit finite element method and the validity of the model was investigated. For the quantitative evaluation of the residual strength of the pressure vessel after impact, a series of the ring specimens was cut from the impacted vessel and its burst pressure was measured by hydraulic pressure hoop tension test. As the results, the relationship between the residual strength degradation and the impact energy was successively obtained and a useful methodology to evaluate quantitatively the impact damage tolerance of CFRP pressure vessel was established.
Keywords
CFRP; Filament Winding Pressure Vessel; Low Velocity Impact; Residual Strength; Finite Element Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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