Detection of weld defects in tailored blanks: Development of an in-process monitoring system for laser welding (1st Report)

1997 ◽  
Vol 11 (8) ◽  
pp. 628-632
Author(s):  
K Mori ◽  
H Sakamoto ◽  
I Miyamoto
Keyword(s):  
Laser Welding ◽  
Monitoring System ◽  
Process Monitoring ◽  
Weld Defects ◽  
Tailored Blanks

Study on the Prevention of Weld Defects in C02 Laser Welding

1994 ◽  
Vol 27 (1) ◽  
pp. 27 ◽  
Author(s):  
Uasuyuki Yoshida ◽  
Yashuhiro Fukaya ◽  
Nagio Minami ◽  
Tsuneto Hirozane
Keyword(s):  
Laser Welding ◽  
Weld Defects

In-Process Monitoring and Estimation of Tool Wear on CNC Turning by Applying Multi-Sensor with Back Propagation Technique

2011 ◽  
Vol 291-294 ◽  
pp. 3036-3043 ◽  
Author(s):  
Somkiat Tangjitsitcharoen ◽  
Channarong Rungruang
Keyword(s):  
Acoustic Emission ◽  
Tool Wear ◽  
Monitoring System ◽  
Process Monitoring ◽  
Back Propagation ◽  
Force Sensor ◽  
Accelerometer Sensor ◽  
Cnc Turning ◽  
Propagation Technique ◽  
Cnc Turning Process

The aim of this research is to propose and develop the in-process monitoring system of the tool wear for the carbon steel (S45C) in CNC turning process by utilizing the multi-sensor which are the force sensor, the sound sensor, the accelerometer sensor and the acoustic emission sensor. The progress of the tool wear results in the larger cutting force, the higher amplitude of the acceleration signal, and the higher power spectrum densities of sound and acoustic emission signals. Hence, their signals have been integrated via the neural network with the back propagation technique to monitor the tool wear. The experimentally obtained results showed that the in-process monitoring system proposed and developed in this research can be effectively used to estimate the tool wear level with the higher accuracy and reliability.

Acoustic in-process monitoring of laser welding

2015 ◽  
Author(s):  
Matthias Bastuck ◽  
Hans-Georg Herrmann ◽  
Bernd Wolter ◽  
Peter-Christian Zinn ◽  
Ralf-Kilian Zaeh
Keyword(s):  
Laser Welding ◽  
Process Monitoring
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