The influence of fiber-matrix adhesion on the linear viscoelastic creep behavior of ‘as received’ and ‘surface modified’ carbon fibers (AR-CF and SM-CF, respectively) reinforced polyphenylene sulfide (PPS) composite materials was investigated. Short-term tensile creep tests were performed on ±45° specimens under six different isothermal conditions, 40, 50, 60, 65, 70 and 75 °C. Physical aging effects were evaluated on both systems using the short-term test method established by Struik. The results showed that the shapes of the curves were affected neither by physical aging nor by the test temperature, allowing then superposition to be made. A unified model was proposed with a single physical aging and temperature-dependent shift factor, a T,te aT,te . It was suggested that the surface treatment carried out in SM-CF/PPS had two major effects on the creep response of CF/PPS composites at a reference temperature of 40 °C: a lowering of the initial compliance of about 25 % and a slowing down of the creep response of about 1.1 decade.
Original languageEnglish
Pages (from-to)245-262
Number of pages18
JournalMechanics of Time Dependent Materials: an international journal devoted to the time-dependent behaviour of materials and structures
Issue number2
Publication statusPublished - 2016

    Research areas

  • Viscoelastic creep behavior, Physical aging, CF/PPS composites, Time aging–time superposition, Time temperature superposition principle (TTSP)

ID: 2262513