Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique

2016 ◽  
Vol 11 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Jia Xu ◽  
Zhen-yu Zhou ◽  
Zhong-yu Piao
Keyword(s):  
Acoustic Emission ◽  
Rolling Contact ◽  
Acoustic Emission Technique ◽  
Accumulated Damage ◽  
Damage Process ◽  
Sprayed Coating

Experimental Research of the Acoustic Emission (AE) Characteristics during the Tensile Process of the Blowout Preventer Shell Material

2012 ◽  
Vol 524-527 ◽  
pp. 1395-1398 ◽  
Author(s):  
Jun Ru Zhao ◽  
Guan Ga Dai ◽  
Ying Zhang
Keyword(s):  
Acoustic Emission ◽  
Rupture Process ◽  
Parameter Analysis ◽  
Waveform Analysis ◽  
Emission Characteristics ◽  
Shell Material ◽  
Acoustic Emission Technique ◽  
Tensile Process ◽  
Blowout Preventer ◽  
Damage Process

In this paper, The tesile damage process of the blowout preventor shell material ZG25GrNiMo was researched using acoustic emission technique. Analyzed the acoustic emission characteristics in different damage phases of this material using parameter analysis and waveform analysis. The result indicated that the acoustic emission characteristics are different in yielding, plastic deformation and rupture process. The differences of frequency spectrums of different damage modes are evident.

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