Ertas, Ahmet H.2024-09-292024-09-2920130191-56651573-8922https://doi.org/10.1007/s11029-013-9314-xhttps://hdl.handle.net/20.500.14619/4026In practice, the problems connected with the fatigue of composites are intricate because of their complex structure and the fatigue loading. Fatigue tests under different fiber orientation angles are time-consuming and also very expensive. Therefore, it is important to establish a technique to consider the fatigue damage at any fiber orientation angle without having to perform excessive amounts of testing. The general purpose is to elaborate a methodology for finding a globally optimum design of composite laminates subjected to in-plane loads. In this part of the study, the Fawaz-Ellyin model of fatigue life prediction is presented and further validated. The results obtained show that the model can be applied to optimization problems of composites.eninfo:eu-repo/semantics/closedAccesscompositesfatigue lifeFawaz-Ellyin modelArticle10.1007/s11029-013-9314-x2-s2.0-848728926877166Q270548WOS:000313812200011Q4