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http://dx.doi.org/10.7234/kscm.2012.25.3.065

Strength of Stainless Steel Pin-reinforced Composite Single-lap Joints  

Lee, Byeong-Hee (경상대학교 대학원 항공우주공학전공)
Park, Yong-Bin (경상대학교 대학원 항공우주공학전공)
Kweon, Jin-Hwe (경상대학교 항공우주시스템공학과, 항공기부품기술연구소)
Choi, Jin-Ho (경상대학교 기계공학부, 항공기부품기술연구소)
Choi, Ik-Hyeon (한국항공우주연구원)
Chang, Sung-Tae (경상대학교 항공기부품기술연구소)
Publication Information
Composites Research / v.25, no.3, 2012 , pp. 65-69 More about this Journal
Abstract
The main objective of this study is to investigate the effect of metal z-pinning on the failure behavior of cocured composite single-lap joints. Three different pin diameters (0.3, 0.5, and 0.7 mm) and three pin areal densities (0.5, 2.0, and 4.0%) were examined. The specimens were fabricated by T700-12K-31E#2510 unidirectional prepreg from Toray. Stainless steel pins were used for z-pinning. Test results showed that except one case with extremely low pin density of 0.5%, all other z-pinned joints exhibited lower initial crack stresses than those of the unpinned joint. However the ultimate strength of the z-pinned joint increased up to 45% at most. Furthermore, even after the complete failure of the joint, the z-pins sustained the carried load to a certain degree experiencing large deformation and provided the stable fracture behavior for the composite joint.
Keywords
z-pinning; single-lap joint; failure strength; co-curing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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