...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Magazine of Concrete Research >Richter's laws at the laboratory scale interpreted by acoustic emission
【24h】

Richter's laws at the laboratory scale interpreted by acoustic emission

机译：实验室范围内的里氏定律由声发射解释

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

In the present work the acoustic emission (AE) technique is applied to examine some aspects influencing concrete failure in compression. By monitoring a structure by means of the AE technique, it proves possible to detect the occurrence of stress-induced cracks. Cracking, in fact, is accompanied by the emission of elastic waves that propagate within the bulk of the material. These waves can be received and recorded by transducers applied to the surface of the structural elements. This technique can be used for diagnosing structural damage phenomena. The current paper presents a mixed experimental and theoretical approach to evaluate the energy density dissipated during compression at each value of strain. Through this method, the two semi-empirical Gutenberg-Richter (GR) laws, well-known in seismology, are verified, the fractal interpretation results of which are very close to the essence of the AE phenomenon. Furthermore, the mentioned approach allows the parameter of 'magnitude' to be identified, appearing in the laws, with the number of oscillations larger than a given threshold measured in volts. Finally, the developed concepts are applied to the study of the compression phenomenon. In particular, by this approach, it is possible to distinguish between the energy progressively dissipated or stored in a compressed structural element.
机译：在本工作中，声发射（AE）技术用于检查影响混凝土受压破坏的某些方面。通过使用AE技术监视结构，证明可以检测应力引起的裂纹的发生。实际上，破裂伴随着在材料主体内部传播的弹性波的发射。这些波可以通过应用于结构元件表面的换能器接收和记录。此技术可用于诊断结构损坏现象。目前的论文提出了一种混合的实验和理论方法来评估在压缩过程中在每个应变值下耗散的能量密度。通过这种方法，验证了地震学中众所周知的两个半经验古腾堡-里希特定律，其分形解释结果与声发射现象的本质非常接近。此外，所提及的方法允许识别出出现在定律中的“幅度”参数，其振荡次数大于以伏特为单位的给定阈值。最后，将开发的概念应用于压缩现象的研究。特别地，通过这种方法，可以在逐渐消耗或存储在压缩结构元件中的能量之间进行区分。

著录项

  • 来源
    《Magazine of Concrete Research》 |2006年第9期|p.619-625|共7页
  • 作者

    A. Carpinteri; G. Lacidogna; N. Pugno;

  • 作者单位

    Department of Structural Engineering and Geotechnics, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, 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 水泥工业;
  • 关键词

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