The Effects of Heat Cycling of High Performance Carbon Reinforced Thermoplastic Materials

Thermoplastic materials have inherent attributes that are desirable for high speed/low cost part processing. Thermoplastic details can also be post-processed to add curvature, co-consolidate, and/or fusion weld to make complex advanced structures. In doing this, repetitive cycling may occur locally or on the entire assembly to accommodate secondary operations. Currently the accepted processing cycle(s) for thermoplastic details have been limited by process specifications to only one forming cycle to make a detail or part. This conservative approach does not allow part manufacturers to perform simplistic operations, such as porosity or thickness correction; let alone secondary operations. This presentation will examine a series of cycles to determine what effect repetitive oven/press cycles have on the mechanical nature of the laminate and physical change of the polymer.

Presented by:   Mr. Joe Spangler serves as the Technical Services Manager, Aerospace Sector, at Teijin Carbon America. He joined Teijin Carbon America’s Carbon Composites Solutions (CCS) group in the Fall of 2011 with areas of expertise in manufacturing/process engineering, advanced materials/process research, and aero-engine propulsion systems. Mr. Spangler also holds a current FAA DER license and delegation in Engines/Propulsion/Propeller systems (Chart B, E, & F). As a 35-year veteran in the aviation field, Mr. Spangler has spent 10 years with Lockheed-Martin in M&P Engineering, 10 years with CTL Aerospace in Program Engineering and 5 years with Standard Aero Component MRO as Engineering Director/FAA DER. He holds a BS degree in Aeronautical Sciences and Technology from the Embry-Riddle Aeronautical University and is an active member of SAMPE, CMH-17, CACRC, and SAE.