首页> 外文期刊>Composite Structures >Prediction of residual mechanical properties in flexure-after-impact of woven composite beams through electrical resistance measurement
【24h】

Prediction of residual mechanical properties in flexure-after-impact of woven composite beams through electrical resistance measurement

机译:通过电阻测量预测编织复合梁弯曲撞击弯曲撞击中的剩余机械性能

获取原文
获取原文并翻译 | 示例

摘要

Low-velocity impact and flexure-after-impact (FAI) tests were performed on 2D plain woven fabric (PWF) and 3D orthogonal woven fabric (OWF) reinforced carbon fibers/epoxy composite beams while the electrical resistance measurement was applied during impact and FAI tests via four-probe technique to study the relations between resistance variation (RV) and residual mechanical properties. The impact tests (from 3 J to 9 J) showed that OWF specimens have better suppression of delamination than PWF, which was also evaluated through thermography and cross-sectional imaging method. Then FAI tests were implemented on impacted specimens while acoustic emission signals were captured. The residual flexural strength and modulus from the FAI tests were normalized by the values of intact specimens and compared with the RV from impact tests. The relations between electrical and mechanical properties revealed that the rise of resistance after the impact is an effective sign that indicates the reduction in the residual flexural strength and modulus of the composite beam. Moreover, the relation between RV and residual modulus is more effective than that with residual strength.
机译:在2D平原织物(PWF)和3D正交编织织物(OWF)增强碳纤维/环氧复合梁上进行低速冲击和弯曲撞击(FAI)试验,而在冲击和FAI期间施加电阻测量通过四探针技术测试,研究电阻变化(RV)与残留机械性能之间的关系。冲击试验(从3 j到9 j)显示OWF样本比PWF更好地抑制分层,这也通过热成像和横截面成像方法评估。然后在受影响的标本上实施FIA测试,而捕获声发射信号。通过完整试样的值标准化来自FIA试验的残余弯曲强度和模量,与来自冲击试验的RV相比。电力和机械性能之间的关系显示,抗冲击后的抵抗的升高是一种有效的标志,表示复合梁的残余弯曲强度和模量的降低。此外,RV和残余模量之间的关系比具有残余强度的更有效。

著录项

  • 来源
    《Composite Structures》 |2020年第5期|112066.1-112066.10|共10页
  • 作者单位

    Zhejiang Sci Tech Univ Fac Mech Engn & Automat Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Fac Mech Engn & Automat Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Fac Mech Engn & Automat Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Fac Mech Engn & Automat Hangzhou 310018 Zhejiang Peoples R China;

    Zhejiang Sci Tech Univ Fac Mech Engn & Automat Hangzhou 310018 Zhejiang Peoples R China;

  • 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

    Carbon fibers; Electrical properties; Impact behaviour; Flexure-after-impact;

    机译:碳纤维;电学特性;影响行为;弯曲撞击;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号