Analysing the thermal characteristics of LAMP joining
Journal: PRODUCTION ENGINEERING ARCHIVES (Vol.2014, No. 3)Publication Date: 2014-07-31
Authors : Tamás Markovits Andor Bauernhuber;
Page : 14-17-17
Keywords : aser; thermal analysis; PMMA; steel; decomposition;
Abstract
The increasing utilisation of different material groups (plastic, metal, ceramics) in our advanced construction pr ovides many benefits, but the fas tening process is a challenge. LAMP (Laser assisted metal plastic) joining is a new technique in fastening technology. It mean s an alternative process from the existing techniques like using adhesives, screwin g, riveting et c. The authors have been dealing with this technology for years. In this research work some important thermal phenomena were analysed in order to understand th e process of joining more thoroughly . The temperature of the steel partner was measured in case o f different laser settings and experimental situations with two measuring techniques: thermocouple and infrared camera. The results show the effect of different influencing factors during heating and the applicability of different measuring methods. The re ceived temperature values can be compared to the characteristic temperature of PMMA polymer (decomposition temperature) in order to determine the root cause of bubble forming in the polymer material. From the result the differences between the different ap plied laser pulse mode for the heating was also determined and it was possible to measure the heating rate during the laser process
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