Characterization of polymer composites during autoclave manufacturing by Fourier transform Raman spectroscopy

Stuart Farquharson; Wayne W. Smith; Elias J. Rigas; Dana Granville

doi:10.1117/12.417383

13 February 2001 Characterization of polymer composites during autoclave manufacturing by Fourier transform Raman spectroscopy

Stuart Farquharson, Wayne W. Smith, Elias J. Rigas, Dana Granville

Author Affiliations +

Proceedings Volume 4201, Optical Methods for Industrial Processes; (2001) https://doi.org/10.1117/12.417383
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

12 The superior engineering properties of fiber reinforced polymer matrix composites, primarily the high strength-to- weight ratio, make them suitable to applications ranging from sporting goods to aircraft components (e.g. helicopter blades). Unfortunately, consistent fabrication of components with desired mechanical properties has proven difficult, and has led to high production costs. This is largely due to the inability to monitor and control polymer cure, loosely defined as the process of polymer chain extension and cross- linking. Even with stringent process control, slight variations in the pre-polymer formulations (e.g. prepreg) can influence reaction rates, reaction mechanisms, and ultimately, product properties. In an effort to optimize the performance of thermoset composite, we have integrated fiber optic probes between the plies of laminates and monitored cure by Raman spectroscopy, with the eventual goal of process control. Here we present real-time measurements of two high performance aerospace companies cured within an industrial autoclave.

Citation Download Citation

Stuart Farquharson, Wayne W. Smith, Elias J. Rigas, and Dana Granville "Characterization of polymer composites during autoclave manufacturing by Fourier transform Raman spectroscopy", Proc. SPIE 4201, Optical Methods for Industrial Processes, (13 February 2001); https://doi.org/10.1117/12.417383

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