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http://dx.doi.org/10.7234/kscm.2011.24.4.029

A Method to Predict the Open-Hole Tensile Strength of Composite Laminate  

Lee, Heun-Ju (한국항공우주산업주식회사)
Shin, In-Soo (한국항공우주산업주식회사)
Jeong, Mun-Gyu (경상대학교 항공우주특성화대학원 항공우주공학)
Kweon, Jin-Hwe (경상대학교 항공우주시스템공학과, 항공기부품기술연구소)
Choi, Jin-Ho (경상대학교 기계공학부 항공기부품기술연구소)
Publication Information
Composites Research / v.24, no.4, 2011 , pp. 29-35 More about this Journal
Abstract
The characteristic length method used to determine a laminate's strength generally requires the test for un-notched and notched laminates and finite element analysis together. In this paper, the methods used to predict the stress distribution and tensile characteristic length of open-hole laminates using the stress concentration factor and equivalent material properties are proposed. These methods do not require data on the failure load of open-hole laminates or finite element analysis. Once the stress and characteristic length have been determined, the failure load of the open-hole laminate can be calculated. The proposed method considers the effect of the material properties as a parameter and therefore can be applied to a variety of materials. The stress distribution is verified by comparing with a finite element analysis and test results. The predicted failure load shows a maximum deviation of 8% from the test results.
Keywords
composite material; open-hole; stress gradient; characteristic length;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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