Dielectric and infrared inference of thermo-oxidative aging of a bismaleimide composite material. (15th September 2016)

• Record Type: Journal Article
• Authors: Daily, Connor; Barnard, Dan J.; Jones, Roger W.; McClelland, John F.; Bowler, Nicola
• Is Part Of: Composites. Volume 101(2016)
• Page Start: 167
• Page End: 175
• Publication Date: 2016-09-15
• Subjects: Glass-fibres -- Polymer-matrix composites (PMCs) -- Electrical properties -- Mechanical properties -- Non-destructive testing; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2016.06.004
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: The degradation of a thermally-aged bismaleimide-glass fiber composite system was assessed via spectroscopic methods. Composite samples were subjected to accelerated isothermal aging at temperatures (275, 300, 325, 350 and 375 ° C) near or above the suggested upper usage limit of 290 °C. Broadband dielectric spectroscopy was used to measure changes in the dielectric spectra of aged composites from 1 kHz to 2 MHz, while chemical changes in the resin were identified with Fourier transform infrared photoacoustic spectroscopy. Additionally, samples were mechanically assessed via a double-notch compression test. Relationships between the dielectric, photoacoustic, and mechanical properties were inferred from the results.