The Dynamic Characteristics of Concrete Sawing Based on Wavelet Multi-Scale Analysis

2013 ◽  
Vol 770 ◽  
pp. 303-307
Author(s):  
Shan Shan Hu ◽  
Ying Ning Hu ◽  
Bang Dao Chen ◽  
Yan Wang ◽  
Xiao Dong Lai
Keyword(s):  
Acoustic Emission ◽  
Wavelet Analysis ◽  
Real Time ◽  
Plain Concrete ◽  
Scale Analysis ◽  
Multi Scale ◽  
Sawing Force ◽  
Time Signals ◽  
Diamond Sawblade ◽  
Multi Scale Analysis

Experiments of diamond sawblade sawing plain concrete are conducted with different sawing parameters. Real time signals of sawing force, vibration, acoustic emission and noise are collected, and Multi-scale wavelet analysis is adopted to analyze the interrelationship and interrelation of real time signals. Supervision and distinction of processing can achieved after Multi-scale wavelet analysis.

Burst-Type Acoustic Emission Source Localization Based on Multi-Scale and Multi-Sensors

2013 ◽  
Vol 380-384 ◽  
pp. 2954-2957
Author(s):  
Xiao Tao Zhang ◽  
Li Wei Tang ◽  
Ping Wang ◽  
Xing Xing Han ◽  
Shi Jie Deng
Keyword(s):  
Acoustic Emission ◽  
Time Delay ◽  
Source Localization ◽  
Acoustic Emission Signal ◽  
Emission Source ◽  
Scale Analysis ◽  
Emission Signal ◽  
Multi Scale ◽  
Acoustic Emission Source ◽  
Multi Scale Analysis

For the burst-type acoustic emission signal, time delay estimation of two sensors calculated by signal cross-correlation is not accurate, and it leads the source localization results is not also accurate. A new method is proposed to improve accuracy of source localization results based on multi-scale analysis and multi-sensors. Acoustic emission signal multi-scale analysis using wavelet transform, then the most accurate time delay is selected in sub-band of signal multi-scale analysis by multi-sensors time delay vector close rule. Finally, the simulation acoustic emission source localization experiment has high accuracy.

Multi-scale analysis of acoustic emission signals in dense-phase pneumatic conveying of pulverized coal at high pressure

AIChE Journal ◽  
2016 ◽  
Vol 62 (8) ◽  
pp. 2635-2648 ◽  
Author(s):  
Lelu He ◽  
Yao Yang ◽  
Zhengliang Huang ◽  
Zuwei Liao ◽  
Jingdai Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Acoustic Emission ◽  
Pulverized Coal ◽  
Scale Analysis ◽  
Pneumatic Conveying ◽  
Dense Phase ◽  
Multi Scale ◽  
Multi Scale Analysis

An Interactive Graph Partition Method Through Combination of Multi-scale Analysis and Level Set

2013 ◽  
Vol 34 (9) ◽  
pp. 2078-2084 ◽  
Author(s):  
Yun-fei Wang ◽  
Du-yan Bi ◽  
De-qin Shi ◽  
Tian-jun Huang ◽  
Di Liu
Keyword(s):  
Level Set ◽  
Graph Partition ◽  
Scale Analysis ◽  
Multi Scale ◽  
Partition Method ◽  
Multi Scale Analysis
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