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http://dx.doi.org/10.20910/JASE.2021.15.6.19

Laminate Tensile Failure Strength Prediction using Stress Failure Criteria  

Lee, Myoung Keon (Agency for Defence Development)
Kim, Jae Hoon (Mechanical Design Engineering, Chungnam National University)
Publication Information
Journal of Aerospace System Engineering / v.15, no.6, 2021 , pp. 19-25 More about this Journal
Abstract
This paper presents a method that uses the stress failure criteria to predict the tensile failure strength of open-hole laminates with stress concentrations. The composite material used in this study corresponds to a 177 ℃ cured, carbon/epoxy unidirectional tape prepreg. The results obtained by testing ten different laminates were compared and analyzed to verify the tensile strength of the open-hole laminates predicted using the proposed stress failure criteria. The findings of this study confirm that the tensile strength predictions performed using the proposed method are generally accurate, except in cases involving highly soft laminates (10% of 0° ply).
Keywords
advanced composite material; average-stress failure criterion; point-stress failure criterion; open-hole laminate; tensile failure strength;
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