|
|||||
|
|
| 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 | |
| 引用本文： | 陈顺云,许昭永,杨润海,赵晋明,郝锦琦,王赟赟,王正荣,熊秉衡.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[J].地震学报(英文版),2002,15(6). |
| 作者姓名： | 陈顺云 许昭永 杨润海 赵晋明 郝锦琦 王赟赟 王正荣 熊秉衡 |
| 作者单位： | InstituteforDisasterPreventionofYunnanProvince，InstituteforDisasterPreventionofYunnanProvince，InstituteforDisasterPreventionofYunnanProvince，InstituteforDisasterPreventionofYunnanProvince，InstituteofGeophysics，ChinaSeismologicalBureau，InstituteforDisasterPreventionofYunnanProvince，LaserInstitute，KunmingTechnologyUniversity，LaserInstitute，KunmingTechnologyUniversity Kunming650041，China，Kunming650041，China，Kunming650041，China，Kunming650041，China，Beijing100081，China，Kunming650041，China，Kunming650051，China，Kunming650051，China |
| 基金项目： | The Dual Project of China Seismological Bureau (9691309020301)，the Specialized Funds for National Key Basic Study (G1998040704)，the project for the MOST under contract (2001BA601B02) and Youth Funds for applied basic study of the Science and Technolo |
| 摘 要： | Introduction ZHOU, et al (1994) collected and investigated periods of level deformation data from 1954 to 1992, and gained sequence of a picture per year (or several years) that vividly showed the varia-tion of the deformation field of Tangshan earthquake source area around the Tangshan diamond block which was 21.3. They indicated that the Tangshan earthquake source area showed de-formation gap and the hard solid characteristic of relative stabilization or relative closedown. In the investig… |
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 |
|
| CHEN Shun-yun XU Zhao-yong YANG Run-hai,ZHAO Jin-ming HAO Jin-qi.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[J].Acta Seismologica Sinica(English Edition),2002,15(6). | |
| Authors: | CHEN Shun-yun XU Zhao-yong YANG Run-hai ZHAO Jin-ming HAO Jin-qi |
| Institution: | 1. Institute for Disaster Prevention of Yunnan Province, Kunming 650041, China 2. Institute of Geophysics, China Seismological Bureau, Beijing 100081, China 3. Laser Institute, Kunming Technology University, Kunming 650051, China |
| Abstract: | 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 fracture, we have studied the stain gap and gained: a) It is necessary that strain gap appears under the condition of linear elasticity theory, and its situation is relatively stable, corresponding to stress concentration. b) Micro fractures, which appear initially at area of high stress, occur rarely at the strain gap, and their locations are finally in the zone between the stress concentration area and the strain gap, which indicate the clusters or groups. However, the major macro fracture (final rupture) started from the shadow areas, and then grew quickly towards the strain gaps, which resulted in failure of sample. |
| Keywords: | strain gap main fracture micro fracture damage theory |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |