Blow Molding CAE and Experimental Verification

Tanaka, Futoshi; Nakano, Ryo; Tanaka, Toyoki

doi:10.4325/seikeikakou.4.550

Seikei-Kakou

1992

DOI: 10.4325/seikeikakou.4.550

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Blow Molding CAE and Experimental Verification

Futoshi Tanaka¹,

Ryo Nakano²,

Toyoki Tanaka³

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2003

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Fiber orientation control of short‐fiber reinforced thermoplastics by ram extrusion

Sanomura

Kawamura²

2003

Polymer Composites

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In this study we examine the fiber orientation distribution, fiber length and Young's modulus of extruded short‐fiber reinforced thermoplastics such as polypropylene. Axial orientation distributions are presented to illustrate the influence of extrusion ratio on the orientation state of the fibrous phase. Fibers are markedly aligned parallel to the extrusion direction with increasing extrusion ratio. The orientation state of extruded fiber‐reinforced thermoplastics (FRTP) is almost uniform throughout the section. The control of fiber orientation can be easily achieved by means of ram extrusion. Experimental results are also presented for Young's modulus of extruded FRTP in the extrusion direction. Young's modulus follows a linear trend with increasing extrusion ratio because the degree of the molecular orientation and the fiber orientation increases. The model proposed by Cox, and Fukuda and Kawada describes the effect of fiber length and orientation on Young's modulus. The value of the orientation coefficient is calculated by assuming a rectangular orientation distribution and calculating the fiber distribution limit angle given by orientation parameters. By comparing the predicted Young's modulus with experimental results, the validity of the model is elucidated. The mean fiber length linearly decreases with increasing extrusion ratio because of fiber breakage due to plastic deformation. There is a small effect on Young's modulus due to fiber breakage by ram extrusion.

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Fiber orientation control of short‐fiber reinforced thermoplastics by ram extrusion

Sanomura

Kawamura²

2003

Polymer Composites

View full text Add to dashboard Cite

show abstract

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Blow Molding CAE and Experimental Verification

Cited by 1 publication

References 0 publications

Fiber orientation control of short‐fiber reinforced thermoplastics by ram extrusion

Fiber orientation control of short‐fiber reinforced thermoplastics by ram extrusion

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