Investigation of the Effects of Unidirectional Compression on the Hardness of High-Density Polyethylene Materials
Öz
In this study, hardness measurements were carried out by applying one-way compression to the high-density polyethylene (HDPE) material at different rates. The amount of deformation was made at room conditions approximately at 23 °C and 50% humidity with 10%, 20%, 30%, 40%, 50%, 60%, 70% and 80% strain ratios. Compression processes were made on 3 mm thick plate samples. The pressing direction was carried out in the direction of thickness. The hardness and stress values of the samples were determined which were subjected to compression processes. In addition, plastic deformation rates for each compression ratio were calculated. The highest hardness value was determined at a 10% compression ratio, and it was observed that the hardness values decreased with increasing compression ratios. In plastic deformation rates, the permanent deformation of 10% and 20% is very slight, and apart from these, a remarkable increase has been observed with increasing deformation rates.
Anahtar Kelimeler
High-density polyethylene, Compression, Deformation, Hardness, Stress
Teşekkür
The author would like to thank both institutions for using Pamukkale University Mechanical
Engineering Laboratories and Karamanoğlu Mehmetbey University Mechanical Engineering
Laboratories in the study.
In addition, the author would like to thank Research Assistant Dr. Mehmet ŞAHBAZ for his
assistance in performing the mechanical experiments who works at Karamanoğlu Mehmetbey
University, Department of Mechanical Engineering.
Kaynakça
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