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Predicting the Long-term Creep Behavior of Plastics Using the Short-term Creep Test

  • S. D. Lim , J. M. Rhee , C. Nah , S.-H. Lee and M.-Y. Lyu
Published/Copyright: May 2, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 19 Issue 3

Abstract

The creep performance of plastics is one of the main criteria for a variety of applications which requires a strict dimensional stability, including electrical/electronic parts and various automotive applications. However, obtaining or generating accurate creep data is very difficult for both resin suppliers and product designers because the creep property is time dependent, which means it takes over several weeks or even a year of time span. Hence a faster and more reliable method predicting creep behavior of plastics is needed when designing plastic products that will encounter long-term loading. This work presents an easy method for predicting the long-term creep behavior of plastics using the short-term creep experimental data. The flexural creep experiments of three plastics, ABS (Acrylonitrile butadiene styrene), PC/ABS (PC and ABS alloy) and LFT (Long fiber reinforced thermoplastics), are performed. For a quick and reliable prediction of long-term creep behavior of plastics, time regional power-law model and time-stress modulus are introduced. To analyze the reliability and validity of the proposed method, the creep analyses based on the proposed method are performed. The comparison between the FEA results and the creep tests has shown that the new method can track both primary and secondary creep behavior over a long time. The creep analyses have been carried out by commercial FE Code.

∗ Mail address: C. Nah, Dept. of Advanced Organic Materials Engineering, Chonbuk National University 561-756, Korea E-mail:

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Received: 2003-8-14
Accepted: 2004-4-5
Published Online: 2013-05-02
Published in Print: 2004-09-01

© 2004, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Polymer Processing Society Annual Meeting 21
  5. Screw Extrusion
  6. Parametric Study of the Mixing Efficiency in a Kneading Block Section of a Twin-screw Extruder
  7. Experiments on Characteristic Deformation and Breakup Behaviors of an Immiscible Drop in a Screw Channel Flow
  8. Die Extrusion
  9. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  10. Fiber
  11. Effects of Sparse Long Chain Branching on the Spinning Stability of LLDPEs
  12. Dry Spinning of Polymer Fibers in Ternary Systems
  13. Dry Spinning of Polymer Fibers in Ternary Systems
  14. Studies on Methacrylate-hydroethyl Methacrylate Oil-absorptive Fiber
  15. Film
  16. Numerical and Physical Modeling of Polymer Crystallization
  17. Numerical and Physical Modeling of Polymer Crystallization
  18. Modeling
  19. Study on Viscoelastic Behavior and Extrusion Blow Molding Processability of PP/PE Blends
  20. Simulation of Thermal Phenomena on the Interface Molten Polymer/Powder Polymer During Rotational Molding
  21. Effect of Mold Temperature on Structure and Property Variations of PBT Injection Moldings in the Thickness Direction
  22. Tensile and Flexural Properties of β-Nucleated Polypropylenes
  23. Predicting the Long-term Creep Behavior of Plastics Using the Short-term Creep Test
  24. PPS News
  25. PPS News
https://doi.org/10.3139/217.1826

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Polymer Processing Society Annual Meeting 21
  5. Screw Extrusion
  6. Parametric Study of the Mixing Efficiency in a Kneading Block Section of a Twin-screw Extruder
  7. Experiments on Characteristic Deformation and Breakup Behaviors of an Immiscible Drop in a Screw Channel Flow
  8. Die Extrusion
  9. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  10. Fiber
  11. Effects of Sparse Long Chain Branching on the Spinning Stability of LLDPEs
  12. Dry Spinning of Polymer Fibers in Ternary Systems
  13. Dry Spinning of Polymer Fibers in Ternary Systems
  14. Studies on Methacrylate-hydroethyl Methacrylate Oil-absorptive Fiber
  15. Film
  16. Numerical and Physical Modeling of Polymer Crystallization
  17. Numerical and Physical Modeling of Polymer Crystallization
  18. Modeling
  19. Study on Viscoelastic Behavior and Extrusion Blow Molding Processability of PP/PE Blends
  20. Simulation of Thermal Phenomena on the Interface Molten Polymer/Powder Polymer During Rotational Molding
  21. Effect of Mold Temperature on Structure and Property Variations of PBT Injection Moldings in the Thickness Direction
  22. Tensile and Flexural Properties of β-Nucleated Polypropylenes
  23. Predicting the Long-term Creep Behavior of Plastics Using the Short-term Creep Test
  24. PPS News
  25. PPS News
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