机构

• 力学研究所 [2]
• 地质与地球物理研究所 [2]
• 长春光学精密机械与物... [1]
• 中国科学院大学 [1]
• 武汉岩土力学研究所 [1]

采集方式

• OAI收割 [6]
• iSwitch采集 [1]

内容类型

• 期刊论文 [5]
• 会议论文 [2]

发表日期

• 2022 [1]
• 2021 [2]
• 2017 [1]
• 2016 [1]
• 2007 [1]
• 2005 [1]
• 更多

学科主题

筛选

浏览/检索结果: 共7条，第1-7条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Strain rate effects on characteristic stresses and acoustic emission properties of granite under quasi-static compression 期刊论文  OAI收割 FRONTIERS IN EARTH SCIENCE, 2022, 卷号: 10, 页码: 21 作者:  Liu, Lu;  Wang, Sijing;  Yang, Wencheng   |  收藏  |  浏览/下载：16/0  |  提交时间：2023/04/06 strain rate effects  characteristic stresses  acoustic emission  energy conversion  multi-scale defects   Supercritical CO2 fracturing with different drilling depths in shale 期刊论文  OAI收割 ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 2021, 页码: 20 作者:  Yang, Hongwei;  Zhao Y(赵源);  Zhang, Xinghua;  Liu, Guojun;  Du, Xidong   |  收藏  |  浏览/下载：30/0  |  提交时间：2021/03/30 Acoustic emission  fracturing  supercritical CO2  damage characteristic  crack morphology   Fractal characteristics of acoustic emission of gas-bearing coal subjected to true triaxial loading 期刊论文  OAI收割 MEASUREMENT, 2021, 卷号: 169, 页码: 13 作者:  Zhang, Ran;  Liu, Jie;  Sa, Zhanyou;  Wang, Zaiquan;  Lu, Shouqing   |  收藏  |  浏览/下载：26/0  |  提交时间：2021/03/03 True triaxial  Gas-bearing coal  Acoustic emission  Correlation dimension  Fractal characteristic   The mechanical characteristics of rock salt under uniaxial compression with low temperature effect 会议论文  OAI收割 Wuhan, PEOPLES R CHINA, MAY 27-29, 2016 作者:  Chen, Jie;  Shi, Xi-Lin   |  收藏  |  浏览/下载：17/0  |  提交时间：2018/06/05 Rock salt  mechanical characteristic  acoustic emission (AE)  temperature  uniaxial compression   A method of the forward problem for magneto-acousto-electrical tomography 期刊论文  iSwitch采集 Technology and health care, 2016, 卷号: 24, 页码: S733-s738 作者:  Lv, Jingxiang;  Liu, Guoqiang;  Wang, Xinli;  Xia, Hui 收藏  |  浏览/下载：27/0  |  提交时间：2019/05/09 Acoustic characteristic  Forward problem  Maet  Conductivity   Study on excitation of the two-tone acoustic characteristic of the chime bell of Marquis Yi of Zeng by finite element method 期刊论文  OAI收割 CHINESE SCIENCE BULLETIN, 2007, 卷号: 52, 期号: 16, 页码: 2167-2173 作者:  Zhang Huai;  Yan ZhenZhen;  Yang ChangChun;  Shi YaoLin   |  收藏  |  浏览/下载：22/0  |  提交时间：2018/09/26 chime bell of Marquis Yi of Zeng (Zeng Hou Yi bell)  two-tone acoustic characteristic  finite element method  free oscillation  wave equation   AE signal processing and DSP implementation based on wavelet packet analysis (EI CONFERENCE) 会议论文  OAI收割 ICMIT 2005: Information Systems and Signal Processing, September 20, 2005 - September 23, 2005, Changchun, China 作者:  Zhao J.;  Wang K. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 To improve the accuracy of AE (Acoustic Emission) testing  the wavelet packet analysis was introduced to process the AE signals. Extraction of the fault characteristic information would be influenced greatly if the faulted AE signal was not effectively denoised. Based on discussing the fast searching algorithm of BWPB (Best Wavelet Packet Basis) adopting Shannon entropy  a new method based on BWPB was presented to denoise the AE signal from the faulted composite plate. Analyzing was performed on the denoised signal and the fault characteristic information was exacted. To improve the real-time performance of the wavelet packet analysis algorithm  it was performed on the DSP (Digital Signal Processing) chip TMS320VC5409. The experimental results show that the algorithm can not only reduce the noise by 10dB but also effectively extract the faulted characteristics information from the AE signal.