• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Acoustics >Mechanical behavior and acoustic emission technique for detecting damage in sandwich structures
【24h】

Mechanical behavior and acoustic emission technique for detecting damage in sandwich structures

机译：检测夹层结构损伤的力学行为和声发射技术

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present study investigates the mechanical behavior under static and dynamic loadings and assesses damage by the acoustic emission method of two types of sandwich composite materials. The sandwich structures under study are both made of cross-ply laminates as skins and PVC closed-cell as foam with different densities: 60kgm~(-3) and 100 kg m~(-3). The mechanical behavior tests were conducted in static and cyclic fatigue loadings under 4-point bending. The sandwich structures considered in fatigue tests were damaged by a various number of shear damages in the foam. Static tests were performed to determine the failure parameters and characteristics used in fatigue tests. The damage density effect on the stiffness, hysteresis loops, dissipated energy and damping of sandwich structures, were studied for various numbers of cycles during cyclic fatigue tests. The acoustic emission method was used to identify and characterize the local damage in both types of sandwich materials under static 4-point bending tests.
机译：本研究调查了在静态和动态载荷下的力学行为，并通过声发射方法评估了两种类型的夹心复合材料的损伤。所研究的三明治结构均由交联层压材料制成表皮，而PVC闭孔发泡材料则具有不同的密度：60kgm〜（-3）和100kgm〜（-3）。力学性能测试是在4点弯曲下的静态和循环疲劳载荷下进行的。疲劳测试中考虑的夹层结构由于泡沫中的各种剪切损伤而损坏。进行静态测试以确定疲劳测试中使用的失效参数和特性。在循环疲劳试验中，研究了不同密度下的损伤密度对夹层结构的刚度，滞后回线，耗能和阻尼的影响。在静态四点弯曲试验下，使用声发射法来识别和表征两种夹心材料的局部损伤。

著录项

  • 来源
    《Applied Acoustics》 |2014年第12期|106-117|共12页
  • 作者

    I. Ben Ammar; C. Karra; A. El Mahi; R. El Guerjouma; M. Haddar;

  • 作者单位

    LUNAM University, Maine University, , Acoustic Laboratory of Maine University (LAUM), Avenue Olivier Messiaen, 72085 Le Mans CEDEX 9, France,Mechanics, Modeling and Manufacturing Research Laboratory (LA2MP), National School of Engineers of Sfax (ENIS), BP 1173-3038 Sfax, Tunisia;

    Mechanics, Modeling and Manufacturing Research Laboratory (LA2MP), National School of Engineers of Sfax (ENIS), BP 1173-3038 Sfax, Tunisia;

    LUNAM University, Maine University, , Acoustic Laboratory of Maine University (LAUM), Avenue Olivier Messiaen, 72085 Le Mans CEDEX 9, France;

    LUNAM University, Maine University, , Acoustic Laboratory of Maine University (LAUM), Avenue Olivier Messiaen, 72085 Le Mans CEDEX 9, France;

    Mechanics, Modeling and Manufacturing Research Laboratory (LA2MP), National School of Engineers of Sfax (ENIS), BP 1173-3038 Sfax, Tunisia;

  • 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

    Sandwich structure; 4-Point bending; Static behavior; Fatigue behavior; Acoustic emission;

    机译：三明治结构;4点弯曲;静态行为;疲劳行为;声发射;

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