Mechanical Properties of Flat Braided Composites With a Circular Hole

Abstract

In this study, fracture behavior and strength in the flat braided bar with a circular hole were investigated by static and fatigue test. Two types of specimen were prepared. They are a braided flat bar with an integrally formed braided hole and a braided flat bar with a machined hole. Moreover, we also examined a specimen that had a metal pin inserted at the circular hole. This specimen was subjected to a static tensile test. The results of the tensile tests indicate that the strength of the flat bar with a braided hole was larger than that of the one with the machined hole. Furthermore, from the results of the fatigue tests, the flat bar with the braided hole showed higher fatigue property than that of the one with the machined hole. [S0094-4289(00)02604-9]

Strength prediction of braided composite plates with a center hole

“…Up to now, most studies in this regard are limited to the investigation of the effect of machined versus braided holes on both the bearing strength and microscopic damage mechanism of braided composites. [41][42][43][44][45][46][47][48][49][50] The main reason for lack of papers related to notched strength prediction of braided composites might be owing to the same difficulties encountered in predicting the effective elastic moduli for 2D braided composites as mentioned in Tsai et al 51 Because 2D braided composites have been widely used in thin-walled structures recently, it is thus very important to be able to predict the notched strength of 2D braided composite plates before they can be used as structural members for mechanical connection. Therefore, this study aims to investigate the notched strength of braided composite plates.…”

Strength prediction of braided composite plates with lateral holes by a finite element-based point stress criterion

“…[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] As for the braided composites, most studies investigated the effect of machined versus braided holes on both the bearing strength and microscopic damage mechanism. [41][42][43][44][45][46][47][48][49][50] Because 2D braided composites have been widely used in thinwalled structures recently, it is very important to be able to predict the notched strength of 2D braided composite plates before they can be used as structural members for mechanical connection. More recently, Hwan et al 51 investigated the notched strength of three kinds of braided composite plates with a center hole.…”