scholarly journals LIFE EXTENSION TECHNIQUE FOR WELDED STRUCTURE USING HFMI/PIT: A REVIEW ON PAST AND CURRENT RESEARCHES WITH APPLICATIONS

2016 ◽  
Vol 2 (1) ◽  
pp. 46
Author(s):  
Y. H. P. Manurung ◽  
M. A. Mohamed ◽  
D. Andud ◽  
A. Z. Abidin ◽  
S. Saidin ◽  
...  
Keyword(s):  
High Frequency ◽  
Treatment Process ◽  
Welded Joint ◽  
Industrial Applications ◽  
Life Extension ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Pneumatic Impact ◽  
Welded Structure ◽  
Research On Application

<p class="TRANSAffiliation">In this paper, High Frequency Mechanical Impact (HFMI) using Pneumatic Impact Treatment (PIT) which can be applied for new or aging welded structure towards asset integrity will be discussed. The technology HFMI/PIT which falls under post weld treatment process is primarily aimed to enhance fatigue life and to strengthen welded joint. At first, the basic principle on fatigue of welded structure based on the IIW Recommendation will be briefly described. Further, various investigations conducted by prominent research universities or institutions and various industrial applications in European countries will be reviewed and discussed. Lastly, the current research on application of HFMI/PIT carried out under Advanced Manufacturing Technology Excellence Centre (AMTEx) at Faculty of Mechanical Engineering UiTM Shah Alam will be presented. As conclusion, it is stated that HFMI/PIT can be applied for extending the structural life and also for design optimization.</p>

Research Status and Development Trend of Laser Welding Technology of Plastic

2013 ◽  
Vol 753-755 ◽  
pp. 425-430 ◽  
Author(s):  
Hui Li ◽  
Wei Li ◽  
Xi Ming Liu ◽  
Yao Min Wang ◽  
Zhen Liu
Keyword(s):  
Laser Welding ◽  
Welding Process ◽  
Development Trend ◽  
Industrial Applications ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Welding Technology ◽  
Critical Issues ◽  
Further Development ◽  
Research Situation

The technological and economic advantages of laser welding of plastics in comparison to the traditional welding process and research situation are analyzed in this paper. Process methods of this technology are reviewed as well as the range of application for these manners is compared. The technological challenges facing the further development of the technology and the critical issues needing to be solved are deeply investigated. It is pointed out that efficient prevention of plastics distortion and cracking as well as control of internal structure and defects are currently the two bottleneck obstacles challenging the further development and industrial applications of the revolutionary advanced manufacturing technology. The developments of laser welding technology of plastics in the future are also forecasted.

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