Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Creep Characteristic of the Polyethylene(PE) at Various Stresses and Temperatures

온도와 응력에 따른 폴레에틸렌(PE)의 크리프특성

  • 강석춘 (수원대학교 기계공학과) ;
  • 이용원 (수원대학교 기계공학과 대학원)
  • Published : 2009.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Creep characteristic is an important failure mechanism when evaluating engineering materials that are soft as polymers or used as mechanical elements at high temperatures. One of the popular thermo-elastic plastics, Polyethylene(PE) which is used broadly for engineering purposes, as it has good properties and merits compared to other plastics, was studied for creep characteristic at various level of stresses and temperatures. From the experimental results, the creep limit of PE at room temperature is 75% of tensile strength. Also the creep limits decreased exponentially as the temperatures increased, up to 50% of the melting point. Also the secondary stage among the three creep stages was nonexistent nor was there any rupture failure which occurred for many metals.

Keywords

References

  1. Philips, F., "The Slow Strectch in India Rubber, Glassand Metal Wire Subjected to a Constant Pull," Philos Mag., Vol. 9, p. 513, 1905 https://doi.org/10.1080/14786440509463303
  2. Andrade, E. N., "On the Viscous Flow in Metals, and Alloyed Phenomena," Proc. Royal Society of London Series A, Vol. 84, Issue 567, pp. 1-12, 1910 https://doi.org/10.1098/rspa.1910.0050
  3. Andrade, E. N., "On the Viscous Flow in Metals, and Alloyed Phenomena," Proc. Royal Society of London Series A, Vol. Hauck, J. E., "Long-Term Performance of Plastics,"Materials in Design Engineering, pp. 113-128, 1965. 84, Issue 567, pp. 1-12, 1910
  4. Reif, S. K., Amberge, K. J. and Woodford, D. A.,"Creep Design Analysis for a Thermoplastic from Stress Relaxation Measurement," Mater. Design, Vol.16, No. 1, pp. 15-21, 1995 https://doi.org/10.1016/0261-3069(95)00008-M
  5. Park, J. C., Chung, J. C., Song, G. B. and Namgung, J.K, "Machine Design," Chungmoongak, pp. 101-103, 2001
  6. Woodfold, D, A., "Design for High-TemperatureApplication," Materials Selection and Design, ASM Handbook, Vol. 20, pp. 573-588, 1977
  7. Lee, T. S., "Materials Testing," Hyungsyul Publishing Co., pp. 225-244, 1988
  8. Norton, R., "Machine design an Integrated Approach," Prentic Hall International Editions, p. 69, 1996
  9. Callister, W. D. Jr., "Materials Science and Engineering an Introduction," Wiley, pp. 530-537,2000