Tensile Properties of Natural Bamboo Fiber at Testing Temperature up to at 473K

We investigated the stress-strain curve and failure characteristics of natural bamboo fiber bundle which was taken by steam explosion treatment. Tensile test of the fiber was conducted at the temperature range from 293 to 473 K. Fracture morphology around o top of bamboo fiber tested at various temperatures was observed. It was found that failure behavior vary in testing temperature. It appreciated that the bamboo fiber exhibits a linear elastic response at all of tested temperature. Strength and elastic modulus obtained from various stress-strain curves decrease as temperature increases. It was predicted that failure morphologies at high temperature have an inclination to change gradually an unstable fracture state, owing to shape parameter, m, calculated by Weibull analysis and observation of fiber specimen after tensile test.