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Effects of the Pre-strain on Mechanical Properties of the Solid-Phase Formed Thermoplastic Composite

고상성형된 열가소성 복합재료의 성형 변형률이 기계적 특성에 미치는 영향

Lee, Jung-Hui;Jo, Hyeon-Cheol;Lee, Gyeong-Yeop
이중희;조현철;이경엽

  • Published : 2001.08.01

Abstract

This study investigates the effects of the pre-strain level on mechanical properties of the solid-phase formed thermoplastic composite. A uniaxial solid-phase forming was performed at the temperature of 125$\^{C}$ and at the constant cross-head speed of 3mm/sec. The composite sheet was formed to various pre-strain levels of 10%, 20%, and 30%. Tension, flexural, and impact tests were carried out to characterize the material properties of a solid-phase formed part. Tensile and flexural strengths decreased with increasing the pre-strain level, while impact strength increased. Various microstructures of the formed part explained the above material behavior.

Keywords

Solid-Phase Forming;Thermoplastic Composite;Pre-Strain;Material Properties;Rule of Mixture

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