The paper highlights the sources of linear/nonlinear viscoelastic and visco plastic behavior in hibiscus
Esculentus fiber reinforced polymer composites materials. The significance of the study is directly related to the
very nature of this material composite which tends to indicate a time dependent behavior. The behavior could
either be a linear or nonlinear one and this is normally considered in the study of fiber reinforced composites
since it is directly related to strain rate effects, micro damage induced to the structure of the composite and or
irreversible plastic strain. The micro damage is due to the application of high stresses or strain and such high
stress levels result in an irreversible phenomenon such as viscoelasticity and viscoplasticity and viscoplastic
responses and the process parameters involved were identified. The results show that the viscoplastic strain
increases exponentially fig 1 and 2 and attains asymptotic limit of 0.18% for 65MPa (fig 1a) and 0.26% for 70
MPa (fig 1b)
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