Characteristics of Acoustic Emission Sensor Using Lead-Free (LiNaK)(NaTaSb)O3Ceramics for Fluid Leak Detection at Power Plant Valves

2008 ◽  
Vol 47 (4) ◽  
pp. 2192-2194 ◽  
Author(s):  
Jaeil Hong ◽  
Juhyun Yoo ◽  
Kabsoo Lee ◽  
Sangguk Lee ◽  
Hyunseon Song
Keyword(s):  
Acoustic Emission ◽  
Power Plant ◽  
Leak Detection ◽  
Lead Free ◽  
Acoustic Emission Sensor ◽  
Fluid Leak

Sensitivity Properties of Acoustic Emission Sensor Using Lead-free (Na,K,Li)(Nb,Ta,Zn)O3 System Ceramics

2012 ◽  
Vol 140 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Yeongho Jeong ◽  
Sunmin Byeon ◽  
Minho Park ◽  
Juhyun Yoo
Keyword(s):  
Acoustic Emission ◽  
Lead Free ◽  
Acoustic Emission Sensor

Experimental investigation on time-domain features in the diagnosis of rolling element bearings by acoustic emission

2021 ◽  
pp. 107754632110161
Author(s):  
Aref Aasi ◽  
Ramtin Tabatabaei ◽  
Erfan Aasi ◽  
Seyed Mohammad Jafari
Keyword(s):  
Acoustic Emission ◽  
Condition Monitoring ◽  
Time Domain ◽  
Central Moment ◽  
Rolling Element Bearings ◽  
Test Rig ◽  
Acoustic Emission Sensor ◽  
Outer Race ◽  
Common Time ◽  
Rolling Element

Inspired by previous achievements, different time-domain features for diagnosis of rolling element bearings are investigated in this study. An experimental test rig is prepared for condition monitoring of angular contact bearing by using an acoustic emission sensor for this purpose. The acoustic emission signals are acquired from defective bearing, and the sensor takes signals from defects on the inner or outer race of the bearing. By studying the literature works, different domains of features are classified, and the most common time-domain features are selected for condition monitoring. The considered features are calculated for obtained signals with different loadings, speeds, and sizes of defects on the inner and outer race of the bearing. Our results indicate that the clearance, sixth central moment, impulse, kurtosis, and crest factors are appropriate features for diagnosis purposes. Moreover, our results show that the clearance factor for small defects and sixth central moment for large defects are promising for defect diagnosis on rolling element bearings.

scholarly journals Development of a low‐power wireless acoustic emission sensor node for aerospace applications

2021 ◽  
Author(s):  
Stephen Grigg ◽  
Rhys Pullin ◽  
Matthew Pearson ◽  
David Jenman ◽  
Robert Cooper ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Low Power ◽  
Sensor Node ◽  
Acoustic Emission Sensor ◽  
Aerospace Applications

High-temperature (> 1000 °C) acoustic emission sensor

2013 ◽  
Author(s):  
Joseph A. Johnson ◽  
Kyungrim Kim ◽  
Shujun Zhang ◽  
Di Wu ◽  
Xiaoning Jiang
Keyword(s):  
Acoustic Emission ◽  
High Temperature ◽  
Acoustic Emission Sensor

Study of the Metal Crack Propagation by Acoustic Emission Testing

2011 ◽  
Vol 105-107 ◽  
pp. 2179-2182
Author(s):  
Wei Min Zhang ◽  
Shu Xuan Liu ◽  
Yong Qiu ◽  
Cheng Feng Chen
Keyword(s):  
Acoustic Emission ◽  
Crack Propagation ◽  
Acquisition System ◽  
Signal Acquisition ◽  
Sensor Signal ◽  
Acoustic Emission Sensor ◽  
Axial Tension ◽  
Emission Testing ◽  
Acoustic Emission Testing ◽  
Signal Operating

Crack propagation is the main reason which leads to the invalidity of the metal components. A set of detecting equipment based on the acoustic emission method was designed, and it was mainly composed of acoustic emission sensor, signal operating circuits and signal acquisition system. Specimens of 16MnR material were manufactured and the static axial tension test of them was carried on. Acoustic emission signals from the specimen were detected by acoustic emission equipment by using piezoelectric ceramic sensor. Signal datum were acquired and operated by the acquisition system, as well as the acquisition program written for it. The final results has demonstrated that acoustic emission equipment designed for the test performed well in acquiring the signals induced by the metal crack propagation.

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