混凝土试样变形破裂电磁辐射的实验研究
首发时间:2008-09-22
摘要:实验研究了混凝土试样在压缩和拉伸变形破裂时产生的电磁辐射现象,考察了电磁辐射与声发射的关系。并对混凝土变形破裂电磁辐射产生的机理进行了探讨分析。结果表明,混凝土试样在受载压缩和拉伸破坏时均能够产生电磁辐射,电磁辐射与声发射并非严格同步;电磁辐射信号随着载荷的增大而增强,随着载荷的降低而减弱;电磁辐射信号与混凝土破裂过程中微裂纹的发展有较大的相关性。这一实验结果对于运用电磁辐射法监测预报或评估混凝土结构的稳定性等具有非常重要的意义。
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The study of Concrete specimen deformation and fracture of the electromagnetic radiation
Abstract:The experiment Studies the producing phenomenon of electromagnetic radiation by concrete specimen when it was compressed and stretched deformation fracture, and inspects the relationship between electromagnetic radiation and acoustic emission. It also analyzes the producing mechanism by electromagnetic radiation when concrete become deformed and burst. The result shows that the concrete specimen can produce electromagnetic radiation when it loads compression and is stretched fracture, electromagnetic radiation and acoustic emission is not strictly synchronous; electromagnetic radiation signal along with the load strengthens, reduces along with the load weakens; The Electromagnetic radiation signal is relevant to the micro crack\\\
Keywords: concrete compress stretch electromagnetic radiation (EMR) Acoustic emission (AE).
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No.2422031987412220****
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