In-process and In-situ Monitoring of Process Parameter in Fusion Bonding of Thermoplastic
J. Pandher, M.J.L. Van Tooren
University of South Carolina, Columbia, USA
J. Fant, Zeus Incorporated, Orangeburg, USA
M. Davis, Luna Innovations Incorporated, Blacksburg, USA
Fusion bonding of thermoplastic composites offers the possibility of fastener free assembly. It involves the melting of two parts along their respective contact surfaces, at or above a specific temperature for a minimum time, and application of pressure during melting and cooling to allow a cohesive bond to form. The quality of the cohesive bond is highly dependent on the temperature and pressure at the bonding zone, and the time the temperature and pressure are sustained. Since the area of interest during bonding is almost always covered by the parts, measuring the critical process parameters during bonding becomes non-trivial. The following work describes a method to address this problem by modified minimally invasive fiber optic sensors that can be positioned along the fusion bonding zone and allow for process parameter monitoring during series production for parts and components. The new sensors have been successfully tested and used to measure in-situ temperatures during welding.
ITHEC 2018 Manuscript D3
Publication date: 05.04.2019
Manuscript D3 published in Conference Proceedings ITHEC 2018
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