Accelerated Testing Methodology for Polymer Composite Durability

Accelerated Testing Methodology for Polymer Composite Durability 

Materials System Research Laboratory, Kanazawa Institute of Technology, Yatsukaho, Matto, Ishikawa, Japan 

Civil Environmental Engineering Department, University of California at Los Angeles, Los Angeles, CA, USA 

The mechanical behavior of polymer resins exhibits time and temperature dependences, called viscoelastic behavior, not only above, but also below the glass-transition temperature, T. Thus, it can be presumed that the mechanical behavior of polymer composites also depends on time and temperature even below which is within the normal operating-temperature range. Examples in this respect are given by Aboudi et al., Sullivan, Gates, and Miyano et 

The time-temperature dependence of the flexural constant strain-rate (CSR), creep, and fatigue strengths of various carbon fiber-reinforced plastics (CFRP) has been studied by McMurray et aV and Miyano et al. It was observed by Enyama et al that the fracture modes are almost identical for the above three types of loading over wide ranges of time and temperature. Similar results were also reported by Karayaka et al at room temperature. The literature survey indicates the validity of the two hypotheses for CFRP the same failure process and the same time-temperature superposition principle for CSR, creep, and fatigue failure. 

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Chapter 18 Accelerated Testing Methodology for Polymer Composite Durability... 

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