A study on relation between acoustic emission and characteristic displacement field on the sample with multi en echelon structures——The theoretic and experimental explorations of strain gap

作者：CHEN Shun yun) XU Zhao yong) YANG Run hai) ZHAO Jin ming) HAO Jin qi) WANG Yun yun) XIONG Bing heng) WANG Zheng rong) ) Institute for Disaster Prevention of Yunnan Province; Kunming; China ) Institute of Geophysics; China Seismological Bureau; Beijing; China ) Laser Institute; Kunming Technology University; Kunming; China

来源：Acta Seismologica Sinica(English Edition), 2002, (06): 656-666+700.

• strain gap
• main fracture
• micro fracture
• damage theory

Based on the phenomena that the deformation gap was observed before the great Tangshang earthquake, this paper discusses the strain gap according to test and theory. The (strain) patterns were recorded photographically by real-time holographic interferometry and shadow optical method of caustics, as soon as the loading process started. In the meantime, the AE (acoustic emission) signals were recorded by a micro crack information storage-analysis sys-tem. According to damage theory and location of micro frac...

• 出版日期2002-12-15