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Biaxial tearing properties of woven coated fabrics using digital image correlation

机译：使用数字图像相关性编织涂层织物的双轴撕裂性能

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摘要

Architectural fabrics as construction materials can experience tearing failure caused by inevitable flaws, which greatly degrade the tensile resistance. This paper presents an experimental study which deals with the crack tearing properties of PVC coated fabrics. Effect of the initial crack length and orientation on tearing behavior were investigated with quasi-static biaxial tensile loading of cruciform specimens, setting the same load rate in warp and weft directions. The brittle failure of the PVC coated fabric had always the crack propagation along warp or weft direction. Defining the tearing residual strength (TRS) as the residual load carrying capacity of a cracked fabric, it was found that the TRS decreased nonlinearly with the increase of initial crack length, but with negligible variation of the crack orientation. Moreover, to better understand the tearing failure mechanism, the full field strain was measured by 2D digital image correlation (DIC) technique. This provided a detailed distribution of the strain components near the crack tip during biaxial loading.
机译：作为建筑材料的建筑织物可以经历由不可避免的缺陷引起的撕裂衰竭，这极大地降低了拉伸抗性。本文介绍了一种实验研究，涉及PVC涂层织物的裂纹撕裂性能。初始裂纹长度和取向对撕裂行为的影响，采用了十字形试样的准静态双轴拉伸载荷，在经线和纬纱方向上设定了相同的载荷率。 PVC涂层织物的脆性失效始终沿经纱或纬纱方向裂缝传播。将撕裂残留强度（TRS）定义为裂化织物的残余负荷承载能力，发现TRS随着初始裂缝长度的增加而下降，但裂缝取向的变化可忽略不计。此外，为了更好地理解撕裂破坏机构，通过2D数字图像相关（DIC）技术测量全场应变。这提供了双轴载荷期间裂纹尖端附近的应变组分的详细分布。

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  • 来源
    《Composite Structures》 |2021年第9期|114206.1-114206.14|共14页
  • 作者

    He Rijin; Sun Xiaoying; Wu Yue; Tang Guowen; Carvelli Valter;

  • 作者单位

    Harbin Inst Technol Key Lab Struct Dynam Behav & Control Minist Educ Harbin 150090 Peoples R China;

    Harbin Inst Technol Key Lab Struct Dynam Behav & Control Minist Educ Harbin 150090 Peoples R China|Harbin Inst Technol Key Lab Smart Prevent & Mitigat Civil Engn Disast Minist Ind & Informat Technol Harbin 150090 Peoples R China;

    Harbin Inst Technol Key Lab Struct Dynam Behav & Control Minist Educ Harbin 150090 Peoples R China|Harbin Inst Technol Key Lab Smart Prevent & Mitigat Civil Engn Disast Minist Ind & Informat Technol Harbin 150090 Peoples R China;

    Inst Grp Co Ltd China Railway First Survey & Design Xian 710000 Peoples R China;

    Politecn Milan Dept Architecture Built Environm & Construct Engn Milan Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Coated fabric; Biaxial loading; Tearing properties; DIC;

    机译：涂层织物;双轴装载;撕裂性质;DIC;

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