This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Hwang, S.-F. Articles by Liu, G.-H. Search for Related Content Social Bookmarking                         What's this?

Experimental Study for Buckling and Postbuckling Behaviors of Composite Laminates with Multiple Delaminations

Department of Mechanical Engineering, National Yunlin University of Science & Technology, 123 University Road, Sec. 3, Touliu, Taiwan 640, R. O. C., hwangsf{at}pine.yuntech.edu.tw

Guu-Huann Liu

Department of Mechanical Engineering, National Yunlin University of Science & Technology, 123 University Road, Sec. 3, Touliu, Taiwan 640, R. O. C.

The buckling and postbuckling behaviors of composite laminates with multiple delaminations under uniaxial compression are experimentally studied. The through-width multiple delaminations with triangular shape are used to simulate impact damage. A nonlinear buckling analysis from finite element method is also used to predict the buckling loads that are compared with experimental results. The critical delamination growth loads of multiple delaminations are obtained from postbuckling tests. The difference of single delamination and multiple delaminations on buckling behavior and postbuckling behavior is discussed. The results indicate that the buckling loads obtained by the nonlinear buckling analysis are in reasonable agreement with the experimental values. Experiments have proven that short delaminations distributed under the near-surface, long delamination have no effects on the buckling loads. The critical delamination growth loads of single-delamination specimens are much higher than those of multiple-delamination specimens, and the shape of the triangular multiple delaminations can affect the critical delamination growth loads.

Key Words: multiple delaminations • buckling • postbuckling • delamination growth • finite element analysis

Journal of Reinforced Plastics and Composites, Vol. 21, No. 4, 333-349 (2002)
DOI: 10.1177/0731684402021004253


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?