https://scholars.lib.ntu.edu.tw/handle/123456789/424969
標題: | Model experiment on a protrusion method for measurement of interface shear sliding stress in fiber-reinforced composite | 作者: | Kagawa Y. Hsueh C.-H. CHUN-HWAY HSUEH |
關鍵字: | Composite material;Fiber protrusion behavior;Shear sliding stress | 公開日期: | 1999 | 卷: | 271 | 期: | 1-2 | 起(迄)頁: | 70-78 | 來源出版物: | Materials Science and Engineering A | 摘要: | Interface debonding, sliding and protrusion behavior in tungsten fiber-reinforced epoxy matrix model composite under 'protrusion test' have been studied. Interface shear-sliding resistance of the composite is obtained from three routes: (i) applied stress-sliding length relation; (ii) applied maximum stress-protruded fiber length at loading; and (iii) applied maximum stress and protruded fiber length after unloading. The shear sliding stress is obtained applying a constant shear stress analysis. It is found that interface debonding proceeds spontaneously with the increase of applied stress from the surface at a soft metal side and one unit of debonding is about twice the fiber radius. The constant interface shear stress approach could explain applied stress-interface sliding length relation below a maximum critical applied stress. The shear sliding stresses obtained from the three routes agree and the agreement demonstrated possibility of obtaining the constant shear frictional stress using a protruded fiber length after complete unloading. However, care should be taken to eliminate Poisson's effect; i.e. a maximum applied stress exists for a given composite and experimental condition. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/424969 | ISSN: | 09215093 | DOI: | 10.1016/S0921-5093(99)00166-5 |
顯示於: | 材料科學與工程學系 |
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