Effect of Shape of Fiber Bundle on Damage Development of Woven Fabric Composities

2006 ◽  
Vol 55 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Takao OTA ◽  
Hikaru YOSHIZUMI ◽  
Hirokazu TSUCHIHASHI ◽  
Takashi MATSUOKA ◽  
Kazuhiko SAKAGUCHI
Keyword(s):  
Fiber Bundle ◽  
Woven Fabric ◽  
Damage Development

scholarly journals Anisotropic Mechanical Response and Strain Localization of a Metallic Glassy-Fiber-Reinforced Polyethylene Terephthalate Fabric

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5619
Author(s):  
Jie Li ◽  
Bo Huang ◽  
Jun Shen ◽  
Jun Yi ◽  
Yandong Jia ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Strain Localization ◽  
Fiber Bundle ◽  
Mechanical Response ◽  
Materials Science ◽  
Image Correlation ◽  
Woven Fabric ◽  
Dominant Factor ◽  
Fracture Mechanisms ◽  
Young’S Moduli

Optimizing the mechanical properties of composites through microstructural design has been a long-standing issue in materials science. In this study, we reinforced a typical polymer, i.e., polyethylene-terephthalate-woven fabric, with a type of Fe-based metallic glassy fiber (MGF) with an extremely large Young’s moduli. The MGF-reinforced fabrics, with three different fiber bundle orientations (0°, 45°, and 90°), were investigated by in situ electron-microscopy mechanical testing techniques in conjunction with a digital image correlation (DIC) technique. The fabrics exhibited a pronounced anisotropic mechanical response, and the associated characteristics were verified to depend on the fiber bundle orientation relative to the external load. Furthermore, localized strains near the intersections of the fiber bundles were found to be much higher than the global strain. It is confirmed that the restriction from warp to weft is the dominant factor influencing strain localization during deformation. Our results are enlightening for understanding the fracture mechanisms of composites.

Fatigue Damage Evaluation in CFRP Woven Fabric Composites Through Dynamic Modulus Measurements

2004 ◽  
Author(s):  
Hideaki Kasano ◽  
Osamu Hasegawa ◽  
Chiaki Miyasaka
Keyword(s):  
Fatigue Damage ◽  
Material Properties ◽  
Elastic Moduli ◽  
Fatigue Loading ◽  
Damage Function ◽  
Fatigue Tests ◽  
Woven Fabric ◽  
Damage Development ◽  
Dynamic Elastic Moduli ◽  
Number Of Cycles

Advanced fiber reinforced composite materials offer substantial advantages over metallic materials for the structural applications subjected to fatigue loading. With the increasing use of these composites, it is required to understand their mechanical response to cyclic loading [1–4]. Our major concern in this work is to macroscopically evaluate the damage development in composites during fatigue loading. For this purpose, we examine what effect the fatigue damage may have on the material properties and how they can be related mathematically to each other. In general, as the damage initiates in composite materials and grows during cyclic loading, material properties such as modulus, residual strength and strain would vary and, in many cases, they may be significantly reduced because of the progressive accumulation of cracks. Therefore, the damage can be characterized by the change in material properties, which is expected to be available for non-destructive evaluation of the fatigue damage development in composites. Here, the tensiontension fatigue tests are firstly conducted on the plain woven fabric carbon fiber composites for different loading levels. In the fatigue tests, the dynamic elastic moduli are measured on real-time, which will decrease with an increasing number of cycles due to the degradation of stiffness. Then, the damage fimction presenting the damage development during fatigue loading is determined from the dynamic elastic moduli thus obtained, from which the damage function is formulated in terms of a number of cycles and an applied loading level. Finally, the damage function is shown to be applied for predicting the remaining fifetime of the CFRP composites subjected to two-stress level fatigue loading.

Tensile Deformation and Progressive Failure Behavior of Woven-Fabric GFRP Laminates at Cryogenic Temperatures

Aerospace ◽  
2004 ◽  
Author(s):  
Satoru Takano ◽  
Tomo Takeda ◽  
Yasuhide Shindo ◽  
Fumio Narita
Keyword(s):  
Finite Element ◽  
Tensile Deformation ◽  
Progressive Failure ◽  
Woven Fabric ◽  
Failure Behavior ◽  
Cryogenic Temperatures ◽  
Scale Analysis ◽  
Damage Development ◽  
Fabric Composite ◽  
Macro Scale

This paper focuses on understanding the deformation and progressive failure behavior of glass/epoxy plain weave fabric-reinforced laminates subjected to uniaxial tension load at cryogenic temperatures. Cryogenic tensile tests were conducted on the woven-fabric laminates, and the damage development during loading was characterized by AE (acoustic emission) measurements. A finite element methodology for progressive failure analysis of woven-fabric composite panels was also developed, and applied to simulate “knee” behavior in the stress-strain responses and damage behavior in the tensile test specimens. The effect of strain concentrations due to the fabric architecture on the failure strain of the material was considered by incorporating the SVF (strain variation factor) from meso-scale analysis of a woven-fabric composite unit into the macro-scale analysis of the specimens. A comparison was made between the finite element predictions and the experimental data, and the agreement is good.

scholarly journals Effect of Mismatch of Stacking Phase on Damage Development of Plain Woven Fabric Composite Materials

2004 ◽  
Vol 53 (4) ◽  
pp. 403-409 ◽  
Author(s):  
Yasutomo UETSUJI ◽  
Yoshiaki ISHIWARI ◽  
Masaru ZAKO ◽  
Tetsusei KURASHIKI ◽  
Ignaas VERPOEST
Keyword(s):  
Composite Materials ◽  
Woven Fabric ◽  
Damage Development ◽  
Fabric Composite
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