A novel AE algorithm-based approach for the detection of cracks in spot welding in view of online monitoring: case study

2021 ◽  
Author(s):  
Slah Yaacoubi ◽  
Fethi Dahmene ◽  
Mahjoub El Mountassir ◽  
Abd Ennour Bouzenad
Keyword(s):  
Spot Welding ◽  
Online Monitoring

scholarly journals A CASE STUDY ON MAINTENANCE OF OVERHEAT - SPOT WELDING MACHINE

2018 ◽  
Author(s):  
Dessy Agustina Sari
Keyword(s):  
Heat Transfer ◽  
Spot Welding ◽  
Cooling Tower ◽  
Cooling Water ◽  
Heat Transfer Process ◽  
Hot Water ◽  
Time Production ◽  
Standard Temperature ◽  
Standard Operation

Indicator overheat on robot transformer of spot welding was gun thermos alarm. Thermostat which adheringin the machine could be shut down the robot if this component detected the excessive warm below the standard operation. Impurities (scale, and deposit) existence caused heat transfer process disturbed, exchanged thermal between cold and hot water. This research methods were replacement part filler of the cooling tower and flushing the pipeline by chemical. The result showed a step progressing which cooling water reached the standard temperature, 30oC. Performance spot welding was being better so time production worked normally.

Stackable 5R Chains With Multiple End-Effectors: Architecture and Optimum Synthesis

2006 ◽  
Author(s):  
Ahmad Smaili ◽  
Bachir Chaaya
Keyword(s):  
Genetic Algorithm ◽  
Spot Welding ◽  
Dimensional Synthesis ◽  
Gradient Search ◽  
Search Methods ◽  
Optimum Synthesis ◽  
Welding Operation ◽  
End Effectors

Presented in this paper is a 4-dof robomech consisting of a stack of two five-bar (5R) chains with multiple end effectors to perform two distinct yet coordinated tasks simultaneously. The over-constrained kinematics chain cannot traverse continuous trajectories but may be synthesized to move the end effectors through a set of desired locations. The article elaborates on the architecture of the proposed robomech, establishes its kinematics relations and constraints, and provides dimensional synthesis scheme based on genetic algorithm and gradient search methods. A case study featuring the robomech performing spot welding operation along two distinct trajectories is included to demonstrate the applicability of the proposed robomech.

Online monitoring and analysis of TBM cutter temperature: A case study in China

Measurement ◽  
2021 ◽  
Vol 174 ◽  
pp. 109034
Author(s):  
Jie Fu ◽  
Dun Wu ◽  
Hao Lan ◽  
Zhiyong Ji ◽  
Wenxin Li ◽  
...  
Keyword(s):  
Online Monitoring ◽  
Tbm Cutter
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