Compressive mechanical properties of sawdust/high density polyethylene composites under various strain rate loadings |
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| Authors: | Haliza Jaya Mohd Firdaus Omar Hazizan Md Akil Zainal Arifin Ahmad Nik Noriman Zulkepli Mohd Mustafa Al Bakri Abdullah |
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| Affiliation: | 1. School of Materials Engineering, Universiti Malaysia Perlis, Arau, Perlis, Malaysia;2. Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Universiti Malaysia Perlis, Arau, Perlis, Malaysia;3. School of Material and Mineral Resource Engineering, Universiti Sains Malaysia, Pulau Pinang, Malaysia;4. Cluster of Polymer Composites (CPCs), Universiti Sains Malaysia, Pulau Pinang, Malaysia |
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| Abstract: | This article is concerned with the static and dynamic mechanical properties of high‐density polyethylene (HDPE) reinforced with sawdust (SD) at a strain rate of up to 103 s?1. In this study, the static and dynamic properties of HDPE/SD composites with different filler loadings of 5, 10, 15, 20, and 30 wt% SD were deliberated at different levels of strain rates (0.001, 0.01, 0.1, 650, 900, and 1100 s?1) using a conventional universal testing machine and the split Hopkinson pressure bar apparatus. The results showed that the stress–strain curves, yield behavior, stiffness, and strength properties of the HDPE/SD composites were strongly affected by both the strain rate and the filler loadings. Furthermore, the rate sensitivityof the HDPE/SD composites showed a great dependency on the applied strain rate, increasing as the strain rate increased. However, the thermal activation values showed a contrary trend. Meanwhile, for the postdamage analysis, the results showed that the applied strain rates influenced the deformation behavior of the tested HDPE/SD composites. Moreover, for the fractographic analysis at dynamic loading, the composites showed that all the specimens underwent a severe catastrophic deformation. J. VINYL ADDIT. TECHNOL., 24:162–173, 2018. © 2016 Society of Plastics Engineers |
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