Online monitoring of acoustic emission for quality control in drilling of polymeric composites

2007 ◽  
Vol 185 (1-3) ◽  
pp. 184-190 ◽  
Author(s):  
S. Arul ◽  
L. Vijayaraghavan ◽  
S.K. Malhotra
Keyword(s):  
Quality Control ◽  
Acoustic Emission ◽  
Online Monitoring ◽  
Polymeric Composites

scholarly journals Preliminary Development of Online Monitoring Acoustic Emission System for the Integrity of Research Reactor Components

2018 ◽  
Vol 962 ◽  
pp. 012064
Author(s):  
S Bakhri ◽  
E Sumarno ◽  
R Himawan ◽  
T Y Akbar ◽  
M. Subekti ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Research Reactor ◽  
Online Monitoring ◽  
Emission System

Wavelet analysis of acoustic emission signals and quality control in laser welding

2001 ◽  
Vol 13 (4) ◽  
pp. 167-173 ◽  
Author(s):  
Hao Zeng ◽  
Zude Zhou ◽  
Youping Chen ◽  
Hong Luo ◽  
Lunji Hu
Keyword(s):  
Quality Control ◽  
Acoustic Emission ◽  
Wavelet Analysis ◽  
Laser Welding

Online Monitoring of Nanoparticle Contamination in Reactive Gases

2004 ◽  
Vol 47 (1) ◽  
pp. 111-115 ◽  
Author(s):  
Otmar Schmid ◽  
Max Trueblood ◽  
Donald Hagen ◽  
Philip Whitefield
Keyword(s):  
Quality Control ◽  
Product Quality ◽  
Online Monitoring ◽  
Manufacturing Processes ◽  
Threshold Size ◽  
Process Gas ◽  
Process Gases ◽  
Low Levels ◽  
Reactive Gases ◽  
Ensure Product Quality

Numerous manufacturing processes require extremely low levels of nanoparticulate contamination to ensure product quality. While modern filters efficiently remove nanoparticles, online monitoring of the cleanliness of possibly reactive process gases is frequently necessary for quality control purposes. For most manufacturing processes, product quality depends on the concentration of particles above a specific threshold size. This paper will describe how to design an online nanoparticle monitoring system (NMS) for reactive (and inert) process gases from commercially available components, and will discuss how to adapt this system to varying process requirements, such as particle threshold size, and type and pressure of process gas. This paper will also describe a method to determine experimentally the performance of an NMS to ensure quality control.

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