Phase defect detection signal analysis: dependence of defect size variation

2014 ◽  
Author(s):  
Tsuyoshi Amano ◽  
Hidehiro Watanabe ◽  
Tsukasa Abe
Keyword(s):  
Defect Detection ◽  
Signal Analysis ◽  
Size Variation ◽  
Defect Size ◽  
Détection Signal ◽  
Detection Signal

scholarly journals Bolt Detection Signal Analysis Method Based on ICEEMD

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Chunhui Guo ◽  
Zhan Zhang ◽  
Xin Xie ◽  
Zhengyu Yang
Keyword(s):  
Signal Analysis ◽  
Approximate Entropy ◽  
Ensemble Empirical Mode Decomposition ◽  
Analysis Method ◽  
Détection Signal ◽  
Mode Function ◽  
Mode Decomposition ◽  
Signal Analysis Method ◽  
Detection Signal

The construction quality of the bolt is directly related to the safety of the project, and, as such, it must be tested. In this paper, the improved complete ensemble empirical mode decomposition (ICEEMD) method is introduced to the bolt detection signal analysis. The ICEEMD is used in order to decompose the anchor detection signal according to the approximate entropy of each intrinsic mode function (IMF). The noise of the IMFs is eliminated by the wavelet soft threshold denoising technique. Based on the approximate entropy and the wavelet denoising principle, the ICEEMD-De anchor signal analysis method is proposed. From the analysis of the vibration analog signal, as well as the bolt detection signal, the result shows that the ICEEMD-De method is capable of correctly separating the different IMFs under noisy conditions and also that the IMF can effectively identify the reflection signal of the end of the bolt.

scholarly journals Corrigendum to “Bolt Detection Signal Analysis Method Based on ICEEMD”

2021 ◽  
Vol 2021 ◽  
pp. 1-1
Author(s):  
Chunhui Guo ◽  
Zhan Zhang ◽  
Xie Xin ◽  
Zhengyu Yang
Keyword(s):  
Signal Analysis ◽  
Analysis Method ◽  
Détection Signal ◽  
Signal Analysis Method ◽  
Detection Signal

Detection signal analysis of actinic inspection of EUV mask blanks using dark-field imaging

2007 ◽  
Author(s):  
Toshihiko Tanaka ◽  
Tsuneo Terasawa ◽  
Nobuyuki Iriki ◽  
Hajime Aoyama ◽  
Toshihisa Tomie
Keyword(s):  
Signal Analysis ◽  
Dark Field ◽  
Détection Signal ◽  
Dark Field Imaging ◽  
Field Imaging ◽  
Detection Signal
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