Photoelastic and numerical analyses of the stress distribution around a fiber in a pull-out test for a thermoplastic fiber/epoxy resin composite

被引：14
作者：
Vazquez-Rodriguez, J. M. [1 ]
Flores-Johnson, E. A. [2 ]
Herrera-Franco, P. J. [3 ]
Gonzalez-Chi, P. I. [3 ]
机构：
[1] Univ Juarez Autonoma Tabasco, Div Acad Multidisciplinaria Jalpa Mendez, Av Univ S-N Zona Cultura, Villahermosa 86040, Centro Tabasco, Mexico
[2] CONACYT, Unidad Mat, Ctr Invest Cientif Yucatan, Calle 43,130 Col Chuburna Hidalgo, Merida 97205, Yucatan, Mexico
[3] Ctr Invest Cientif Yucatan, Unidad Mat, Calle 43,130 Col Chuburna Hidalgo, Merida 97205, Yucatan, Mexico
来源：
POLYMER COMPOSITES | 2018年 / 39卷
关键词：
MICROMECHANICAL ANALYSIS; SURFACE-TREATMENT; MATRIX; INTERFACE; PERFORMANCE; BEHAVIOR; STRENGTH; ADHESION; DESIGN;
D O I：
10.1002/pc.24709
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The stress distribution in a polyester fiber/epoxy matrix model composite subjected to pull-out test was investigated through photoelasticity and elastic-plastic numerical analysis using finite element (FE) simulations. A photoelastic technique was used to obtain isoclinic fringe patterns, which were employed to construct a pair of orthogonal families of principal stress trajectories for a pull-out specimen. It was found that the trajectories of the maximum principal stress tend to converge at points where either the maximum interfacial shear stress is located or there is stress concentration. The FE simulations proved to be a powerful tool that allowed understanding the 3D stress distributions, in areas located near the embedded fiber, where principal directions were influenced by radial stresses, effects of Poisson's ratio, reduction of fiber diameter and plasticity. The FE simulations could be extended to quantify stress fields in other single-fiber test configurations. POLYM. COMPOS., 39:E2397-E2406, 2018. (c) 2017 Society of Plastics Engineers
引用
收藏
页码：E2397 / E2406
页数：10
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