| Micromechanics Modeling of Transverse Tensile Strength for Unidirectional CFRP Composite | |
| Liu, Liangbao1; Zhang, Xiaohui2; Wang ZB(王子标)3; Wang, Yana4,5; Guo, Jiangzhen2 | |
| Corresponding Author | Zhang, Xiaohui([email protected]) ; Guo, Jiangzhen([email protected]) |
| Source Publication | MATERIALS
 |
| 2022-12-01 | |
| Volume | 15Issue:23Pages:14 |
| Abstract | Transverse tensile strength of unidirectional (UD) composites plays a key role in overall failure of fiber-reinforced composites. To predict this strength by micromechanics, calculation of actual stress in constituent matrix is essentially required. However, traditional micromechanics models can only give the volume-averaged homogenized stress rather than an actual one for a matrix, which in practice will cause large errors. In this paper, considering the effect of stress concentration on a matrix, a novel micromechanics method was proposed to give an accurate calculation of the actual stress in the matrix for UD composite under transverse tension. A stress concentration factor for a matrix in transverse tensile direction is defined, using line-averaged pointwise stress (obtained from concentric cylinder assemblage model) divided by the homogenized quantity (obtained from a bridging model). The actual stress in matrix is then determined using applied external stress multiplied by the factor. Experimental validation on six UD carbon fiber-reinforced polymer (CFRP) specimens indicates that the predicted transverse tensile strength by the proposed method presents a minor deviation with an averaged relative error of 5.45% and thus is reasonable, contrary to the traditional method with an averaged relative error of 207.27%. Furthermore, the morphology of fracture section of the specimens was studied by scanning electron microscopy (SEM). It was observed that different scaled cracks appeared within the matrix, indicating that failure of a UD composite under transverse tension is mainly governed by matrix failure. Based on the proposed approach, the transverse tensile strength of a UD composite can be accurately predicted. |
| Keyword | unidirectional fiber-reinforced composites transverse strength prediction micromechanics modeling stress concentration factor stress field in matrix |
| DOI | 10.3390/ma15238577 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000896126300001 |
| WOS Keyword | FIBER-REINFORCED COMPOSITES ; POLYMER COMPOSITES ; FAILURE ; COMPRESSION ; CRITERIA ; MATRIX |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | National Natural Science Foundation of China ; [51905021] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 3+ |
| Contributor | Zhang, Xiaohui ; Guo, Jiangzhen |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91223 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Beihang Univ, Res Inst Aero Engn, Beijing 100191, Peoples R China; 2.Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Engn Med, Beijing 100191, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.AECC Beijing Inst Aeronaut Mat, Surface Engn Div, Beijing 100095, Peoples R China; 5.AECC Beijing Inst Aeronaut Mat, Key Lab Adv Composites, Beijing 100095, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Liangbao,Zhang, Xiaohui,Wang ZB,et al. Micromechanics Modeling of Transverse Tensile Strength for Unidirectional CFRP Composite[J]. MATERIALS,2022,15,23,:14.Rp_Au:Zhang, Xiaohui, Guo, Jiangzhen |
| APA | Liu, Liangbao,Zhang, Xiaohui,王子标,Wang, Yana,&Guo, Jiangzhen.(2022).Micromechanics Modeling of Transverse Tensile Strength for Unidirectional CFRP Composite.MATERIALS,15(23),14. |
| MLA | Liu, Liangbao,et al."Micromechanics Modeling of Transverse Tensile Strength for Unidirectional CFRP Composite".MATERIALS 15.23(2022):14. |
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| Jp2022FA020.pdf（3111KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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