Quality Prediction of Twin Wire Arc Sprayed Coatings Using Acoustic Emission Analysis

被引:1
|
作者
Tillmann, W. [1 ]
Abdulgader, M. [1 ]
Wang, G. [1 ]
Zielke, R. [1 ]
机构
[1] Tech Univ Dortmund, Inst Mat Engn, Dortmund, Germany
关键词
accoustic emission; cored wire; diagnostics; iron; particle plume interaction; substrate coating interaction; FLIGHT PARTICLE CHARACTERISTICS; MICROSTRUCTURE;
D O I
10.1007/s11666-012-9861-z
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, acoustic emission analysis is utilized in the twin wire arc spraying (TWAS) process to study the influence of the adjustable process parameters on the simultaneously obtained acoustic signals at the nozzle and at the substrate. The amplitude of recorded signals at the substrate was in general much higher than those recorded at the nozzle. At the substrate side, the amplitude of emitted acoustic signals is dependent on feedstock materials and is higher when using solid wires. The acoustic signals were recorded at the spraying gun for different gas pressures without arc ignition (as dry runs) in order to reveal the effect of the arc on the emitted acoustic signals. A correlation between controllable parameters, the acoustic signals, and the obtained in-flight particle characteristics was observed. This work contributes to the online control of TWAS processes and is one of many proposed publications in the research field of the conducted acoustic emission analysis.
引用
收藏
页码:380 / 390
页数:11
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