Fatigue damage growth in notched laminates

[摘要] The issue discussed in the current paper deals with experimental and finite element analysis of fatigue problems for notched rectangular multilayered plates. The fatigue damage growth and fracture at holes in reinforced laminates loaded in tension is presented. The analysis concerns the 45° glass/epoxy laminated plates with several types of holes such as vertical elliptical, horizontal elliptical and circular. Also a few remarks on the static analytical solutions and fatigue live predictions are presented. Here, the initial results are only demonstrated, which are fundamental for the further analysis. The experiments shown that independently on the shape of the hole the fatigue process includes three stages, i.e. the matrix cracking, the delamination between the plies and the final failure. The first stage of the failure can be described with the help of the standard finite element codes.

[发布机构] Institute of Machine Design, Cracow University of Technology, Warszawska 24, Cracow; 31-155, Poland^1

[效力级别] 材料工程

[关键词] Fatigue damage growth;Fatigue problems;Fatigue process;Final failures;Laminated plate;Matrix cracking;Multi-layered plates;Standard finite element