scholarly journals Experimental Investigation on Reconstructing Sound Reflection Coefficient by NAH in Finite Space

2015 ◽  
Author(s):  
Yan Xiao ◽  
Xuecai Qiang ◽  
Dejiang Shang ◽  
Yongwei Liu
Keyword(s):  
Experimental Investigation ◽  
Reflection Coefficient ◽  
Sound Reflection ◽  
Finite Space

Theoretical and Experimental Investigation of Pipe Wall Thinning Detection Using Guided Waves

2008 ◽  
Author(s):  
Isoharu Nishiguchi ◽  
Fumitoshi Sakata ◽  
Seiichi Hamada
Keyword(s):  
Experimental Data ◽  
Power Generation ◽  
Experimental Investigation ◽  
Reflection Coefficient ◽  
Guided Waves ◽  
Pipe Wall ◽  
Thermal Power ◽  
Wall Thinning ◽  
Torsional Waves ◽  
Simplified Method

A method to investigate pipe wall thinning using guided waves has been developed for pipes in thermal power generation facilities. In this paper, the reflection coefficient and the transmission coefficient are derived for the torsional waves which propagate along a pipe and a simplified method to predict the waveform is proposed. The predictions of the waveforms by the FEM and a simplified method based on the reflection of torsional waves are also examined by comparing with experimental data.

Optimization of porous side wall which reduces sound reflection coefficient of a duct open end

2004 ◽  
Vol 2004.42 (0) ◽  
pp. 149-150
Author(s):  
Keisuke SEISHO ◽  
Masaharu NISHIMURA ◽  
Tetsunori KURIYAMA ◽  
Makoto HIROTSU
Keyword(s):  
Reflection Coefficient ◽  
Side Wall ◽  
Sound Reflection

Method for low frequency sound reflection coefficient measurements in a compact space

2019 ◽  
Vol 145 (3) ◽  
pp. 1882-1882
Author(s):  
Xiuyuan Peng ◽  
Junfei Li ◽  
Chen Shen ◽  
Kiegan Lenihan ◽  
Steven Cummer
Keyword(s):  
Reflection Coefficient ◽  
Compact Space ◽  
Low Frequency ◽  
Frequency Sound ◽  
Sound Reflection
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