The influence of thermal contact resistance on the thermal history in laser-assisted fiber placement
Ozan Çelik (TU Delft - Structural Integrity & Composites)
S.M. Amin Hosseini2 (University of Twente)
İsmet Baran (University of Twente)
Wouter J B Grouve (University of Twente)
Remko Akkerman (University of Twente)
Daniël M.J. Daniël (TU Delft - Aerospace Structures & Computational Mechanics)
Julie J.E. Teuwen (TU Delft - Aerospace Manufacturing Technologies)
Clemens A. Dransfeld (TU Delft - Aerospace Manufacturing Technologies)
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Abstract
The temperature history during the laser assisted fiber placement (LAFP) process is very important since it significantly influences the final quality of the structure. Air pockets between subsequent plies, caused by the lack of intimate contact, act as insulators and reduce the through-thickness heat transfer. This phenomenon is commonly referred to as the inter-ply thermal contact resistance (TCR). So far, the link between the degree of intimate contact, the corresponding TCR and its influence on the thermal history has not been clearly demonstrated specifically for LAFP. The results indicate that TCR influences the cooling period of the process.