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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hashemi, S. Onishi, P. |
| Copyright Year | 2009 |
| Abstract | The effect of fibre concentration, temperature and mould thickness on tensile strength of single- and double-gated injection-moulded polypropylene copolymer reinforced with 0, 10, 20, 30 and 40 wt% short glass fibre was studied at a fixed strain-rate of 7.58 × 10$^{−3}$ s$^{−1}$ between 23 and 100 °C. It was found that tensile strength of single-gated mouldings, σ$_{c}$, increased with increasing volume fraction of fibres, ϕ$_{f}$ in a nonlinear manner and decreased with increasing temperature in a linear manner. However, for ϕ$_{f}$ values in the range 0–10% a simple additive rule-of-mixtures adequately described the variation of σ$_{c}$ with ϕ$_{f}$ over the entire temperature range 23–100 °C studied here. Tensile strength of double-gated mouldings like their single-gated counterparts decreased linearly with increasing temperature. The presence of weldlines significantly reduced tensile strength of double-gated composite mouldings but had little effect on tensile strength of the matrix. Weldline integrity factor, F $_{σ}$, defined as weldline strength divided by unweld strength, decreased with increasing ϕ$_{f}$ but increased with increasing temperature. A linear dependence was found between F $_{σ}$ and temperature. Mould thickness had no significant effect upon weld and unweld tensile strengths and consequently had no significant effect upon weldline integrity factor. |
| Starting Page | 5588 |
| Ending Page | 5594 |
| Page Count | 7 |
| File Format | |
| ISSN | 00222461 |
| Journal | Journal of Materials Science |
| Volume Number | 44 |
| Issue Number | 20 |
| e-ISSN | 15734803 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2009-08-11 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Mechanics Crystallography Continuum Mechanics and Mechanics of Materials Polymer Sciences Characterization and Evaluation of Materials Materials Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics |
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