Uniaxial ratchetting of polycarbonate at different temperatures

What is it about?

A series of uniaxial stress-controlled cyclic tests were carried out at four prescribed temperatures (i.e., 0, 30, 60 and 90°C) to investigate the uniaxial ratchetting of polycarbonate (PC) and its time-dependent behavior in this work. The effects of applied valley stress and ambient temperature on the uniaxial ratchetting of the PC are discussed.

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Why is it important?

PC components are often subjected to cyclic loading and at a wide range of temperatures. The features of cyclic deformation and fatigue failure of the material are very important to the design and assessment of the structural components. The results obtained in this work helped to understand the cyclic behavior of PC at different temperatures and then provided a guidance for rational application of PC products. Furtherly, conclusions obtained in this work are useful to construct a corresponding constitutive model.