Tensile behavior of glass/epoxy laminates at varying strain rates and temperatures
- 作者：J.M.L. Reis ; jreis@mec.uff.br ; J.L.V. Coelho ; A.H. Monteiro ; H.S. da Costa Mattos
- 关键词：A. Glass fibers ; B. Mechanical properties ; C. Analytical modelling ; D. Mechanical testing
- 刊名：Composites Part B ; Engineering
- 出版年：2012
- 期刊代码：18_13598368
- 类别：ms
- 出版时间：June, 2012
- 卷：43
- 期：4
- 页码：2041-2046
- 文件大小：548 K
摘要
In the present work tensile tests at different strain rates and temperatures were performed in glass fiber reinforced polymer (GFRP). It is observed that such kind of composite presents an elasto-viscoplastic behavior - the rate dependency only occurs for loading levels above a given elasticity limit. Strain rate strongly affects the ultimate tensile strength (蟽b>u b>) and the modulus of elasticity is almost insensitive to it while temperature only influences the modulus. Analytical expressions to predict the modulus of elasticity and (蟽b>u b>) as a function of the temperature and strain rate are proposed and compared with experimental data showing a reasonable agreement.