A design approach for the mechanical properties of polypropylene discontinuous fiber reinforced cementitious composites by extrusion molding

Hiroyuki Takashima; Kiyotaka Miyagai; Toshiyuki Hashida; Victor C. Li

doi:10.1016/S0013-7944(02)00154-6

A design approach for the mechanical properties of polypropylene discontinuous fiber reinforced cementitious composites by extrusion molding

Hiroyuki Takashima, Kiyotaka Miyagai, Toshiyuki Hashida, Victor C. Li

ENG - Fracture and Reliability Research Institute

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

Polypropylene discontinuous fiber reinforced cementitious composites were prepared by extrusion molding and tested in uniaxial tension to determine the mechanical properties such as ultimate composite strength and strain, and the critical volume fraction for multiple cracking.It was shown that the experimentally determined critical fiber volume fraction reasonably agreed with the theoretical value predicted by a micromechanics model.The extruded fiber composites yielded the ultimate composite strength of 9.0 MPa and composite strain of 0.55% at the fiber volume fraction of 7.4%. Our experimental results suggest that there is an optimal fiber aspect ratio and fiber volume fraction for enhancing the fracture properties.

Original language	English
Pages (from-to)	853-870
Number of pages	18
Journal	Engineering Fracture Mechanics
Volume	70
Issue number	7-8
DOIs	https://doi.org/10.1016/S0013-7944(02)00154-6
Publication status	Published - 2003 May 1

Keywords

Extrusion molding
Fiber orientation
Micromechanics models
Multiple cracking
Polypropylene discontinuous fiber

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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abstract = "Polypropylene discontinuous fiber reinforced cementitious composites were prepared by extrusion molding and tested in uniaxial tension to determine the mechanical properties such as ultimate composite strength and strain, and the critical volume fraction for multiple cracking.It was shown that the experimentally determined critical fiber volume fraction reasonably agreed with the theoretical value predicted by a micromechanics model.The extruded fiber composites yielded the ultimate composite strength of 9.0 MPa and composite strain of 0.55% at the fiber volume fraction of 7.4%. Our experimental results suggest that there is an optimal fiber aspect ratio and fiber volume fraction for enhancing the fracture properties.",

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AU - Takashima, Hiroyuki

AU - Miyagai, Kiyotaka

AU - Hashida, Toshiyuki

AU - Li, Victor C.

PY - 2003/5/1

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N2 - Polypropylene discontinuous fiber reinforced cementitious composites were prepared by extrusion molding and tested in uniaxial tension to determine the mechanical properties such as ultimate composite strength and strain, and the critical volume fraction for multiple cracking.It was shown that the experimentally determined critical fiber volume fraction reasonably agreed with the theoretical value predicted by a micromechanics model.The extruded fiber composites yielded the ultimate composite strength of 9.0 MPa and composite strain of 0.55% at the fiber volume fraction of 7.4%. Our experimental results suggest that there is an optimal fiber aspect ratio and fiber volume fraction for enhancing the fracture properties.

AB - Polypropylene discontinuous fiber reinforced cementitious composites were prepared by extrusion molding and tested in uniaxial tension to determine the mechanical properties such as ultimate composite strength and strain, and the critical volume fraction for multiple cracking.It was shown that the experimentally determined critical fiber volume fraction reasonably agreed with the theoretical value predicted by a micromechanics model.The extruded fiber composites yielded the ultimate composite strength of 9.0 MPa and composite strain of 0.55% at the fiber volume fraction of 7.4%. Our experimental results suggest that there is an optimal fiber aspect ratio and fiber volume fraction for enhancing the fracture properties.

KW - Extrusion molding

KW - Fiber orientation

KW - Micromechanics models

KW - Multiple cracking

KW - Polypropylene discontinuous fiber

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