Comparison of Mechanical Properties Between PE80 and PE100 Pipe Materials
Source abstract
Abstract
Mechanical properties, including yield stress, relaxation behavior, moduli (elastic modulus at the strain of 0.5% and strain hardening modulus at strains above 70%), viscous stress, and quasi-static stress, are compared between polyethylene (PE) pipes that are made of PE80 and PE100 resins. The mechanical properties are measured using D-split tensile test on modified notched pipe ring specimens. The comparison includes the influence of strain rate (by the change of crosshead speed) on the yield strength and influence of pre-strain on the relaxation behavior and the modulus values. A two-stage approach is used to characterize the influence of pre-strain on the moduli, to ensure that viscous recovery from the first-stage of the test, to introduce the pre-strain, does not affect the modulus measurement from the second-stage test. The results show that elastic modulus, yield stress, strain hardening modulus, viscous stress, and quasi-static stress for PE100 are higher than those for PE80, but PE80 shows higher resistance to stress relaxation. The results also show that with the increase in the pre-strain level, the elastic modulus drops but the strain hardening modulus remains relatively constant.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Polymer crystallization and properties · Material Properties and Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. N. Kiass, R. Khelif, L. Boulanouar, and K. Chaoui, Experimental Approach to Mechanical Property Variability Through a High-density Polyethylene Gas Pipe Wall, J. Appl. Polym. Sci., 2005, 97(1), p 272–28110.1002/app.21713 ↗
2. Plastics Piping and Ducting Systems—Determination of the Long-term Hydrostatic Strength of Thermoplastics Materials in Pipe form by Extrapolation, 9080, ISO, 2012
3. A. Adib, C. Domínguez, J. Rodríguez, C. Martín, and R.A. García, The Effect of Microstructure on the Slow Crack Growth Resistance in Polyethylene Resins, Polym. Eng. Sci., 2015, 55(5), p 1018–102310.1002/pen.23970 ↗
4. L.M. Graice, M.Y.A. Younan, and S.A.R. Naga, Experimental investigation into the fracture toughness of polyethylene pipe material, J. Press. Vessel Technol., 2004, 127(1), p 70–7510.1115/1.1845478 ↗
5. A. Frank, G. Pinter, and R.W. Lang, Fracture Mechanics Lifetime Prediction of PE 80 and PE 100 Pipes Under Complex Loading Conditions, Proceedings Pipes XV, Vancouver, Canada, 2010
6. A. Redhead, A. Frank, and G. Pinter, Investigation of Slow Crack Growth Initiation in Polyethylene Pipe Grades with Accelerated Cyclic Tests, Eng. Fract. Mech., 2013, 101, p 2–910.1016/j.engfracmech.2012.09.022 ↗
7. P. Yayla and Y. Bilgin, Squeeze-Off of Polyethylene Pressure Pipes: Experimental Analysis, Polym. Test., 2007, 26(1), p 132–14110.1016/j.polymertesting.2006.09.006 ↗
8. Y. Zhang and P.Y.B. Jar, Quantitative Assessment of Deformation-Induced Damage in Polyethylene pressure Pipe, Polym. Test., 2015, 47, p 42–5010.1016/j.polymertesting.2015.08.005 ↗
9. R. Rafiee, Apparent Hoop Tensile Strength Prediction of Glass Fiber-Reinforced Polyester Pipes, J. Compos. Mater., 2012, p 002199831244720910.1177/0021998312447209 ↗
10. P. Y. B. Jar, 2014, “Degradation of Mechanical Properties for Polyethylene by Small-Deformation Damage,” ASME 2014 Pressure Vessels and Piping Conference, American Society of Mechanical Engineers, p V06BT06A040–V006BT006A04010.1115/PVP2014-28008 ↗
11. P.Y.B. Jar, Effect of Tensile Loading History on Mechanical Properties for Polyethylene, Polym. Eng. Sci., 2015, 55(9), p 2002–201010.1002/pen.24042 ↗
12. P.Y.B. Jar, Transition of Neck Appearance in Polyethylene and Effect of the Associated Strain Rate on the Damage Generation, Polym. Eng. Sci., 2014, 54(8), p 1871–187810.1002/pen.23735 ↗
13. S. Muhammad and P.Y.B. Jar, Effect of Aspect Ratio on Large Deformation and Necking of Polyethylene, J. Mater. Sci, 2011, 46(4), p 1110–112310.1007/s10853-010-4880-y ↗
14. K. Hong, A. Rastogi, and G. Strobl, A Model Treating Tensile Deformation of Semicrystalline Polymers: Quasi-Static Stress−Strain Relationship and Viscous Stress Determined for a Sample of Polyethylene, Macromolecules, 2004, 37(26), p 10165–1017310.1021/ma049174h ↗
15. S. Hobeika, Y. Men, and G. Strobl, Temperature and Strain Rate Independence of Critical Strains in Polyethylene and Poly(ethylene-co-vinyl acetate), Macromolecules, 2000, 33(5), p 1827–183310.1021/ma9910484 ↗
16. B. Na, Q. Zhang, Q. Fu, Y. Men, K. Hong, and G. Strobl, Viscous-Force-Dominated Tensile Deformation Behavior of Oriented Polyethylene, Macromolecules, 2006, 39(7), p 2584–259110.1021/ma052496g ↗
17. A. Dasari and R.D.K. Misra, On the Strain Rate Sensitivity of High Density Polyethylene and Polypropylenes, Mater. Sci. Eng., A, 2003, 358(1–2), p 356–37110.1016/S0921-5093(03)00330-7 ↗
18. P.J. DesLauriers, M.P. McDaniel, D.C. Rohlfing, R.K. Krishnaswamy, S.J. Secora, E.A. Benham, P.L. Maeger, A.R. Wolfe, A.M. Sukhadia, and B.B. Beaulieu, A Comparative Study of Multimodal vs. Bimodal Polyethylene Pipe Resins for PE-100 Applications, Polym. Eng. Sci., 2005, 45(9), p 1203–121310.1002/pen.20390 ↗
19. X. Lu, R. Qian, and N. Brown, The Effect of Crystallinity on Fracture and Yielding of Polyethylenes, Polymer, 1995, 36(22), p 4239–424410.1016/0032-3861(95)92219-5 ↗
20. R. Popli and L. Mandelkern, Influence of Structural and Morphological Factors on the Mechanical Properties of the Polyethylenes, J. Polym. Sci. Part B: Polym. Phys., 1987, 25(3), p 441–48310.1002/polb.1987.090250301 ↗
21. S. Humbert, O. Lame, and G. Vigier, Polyethylene Yielding Behaviour: What is Behind the Correlation Between Yield Stress and Crystallinity?, Polymer, 2009, 50(15), p 3755–376110.1016/j.polymer.2009.05.017 ↗
22. Y. Lu, W. Yang, K. Zhang, and M.-B. Yang, Stress Relaxation Behavior of High Density Polyethylene (HDPE) Articles Molded by Gas-Assisted Injection Molding, Polym. Test., 2010, 29(7), p 866–87110.1016/j.polymertesting.2010.03.005 ↗
23. N. Sun, M. Wenzel, and A. Adams, Morphology of High-density Polyethylene Pipes Stored Under Hydrostatic Pressure at Elevated Temperature, Polymer (United Kingdom), 2014, 55(16), p 3792–3800
24. J. Lemaître, A Course on Damage Mechanics, Springer, Berlin, 199610.1007/978-3-642-18255-6 ↗
25. R.N. Haward, Strain Hardening of High Density Polyethylene, J. Polym. Sci. Part B Polym. Phys., 2007, 45(9), p 1090–109910.1002/polb.21123 ↗
26. R.N. Haward, Strain Hardening of Thermoplastics, Macromolecules, 1993, 26(22), p 5860–586910.1021/ma00074a006 ↗
27. R.A.C. Deblieck, D.J.M. Van Beek, K. Remerie, and I.M. Ward, Failure Mechanisms in Polyolefines: The Role of Crazing, Shear Yielding and the Entanglement Network, Polymer, 2011, 52(14), p 2979–299010.1016/j.polymer.2011.03.055 ↗
28. B.D. Lauterwasser and E.J. Kramer, Microscopic Mechanisms and Mechanics of Craze Growth and Fracture, Philos. Mag. A, 1979, 39(4), p 469–49510.1080/01418617908239285 ↗
29. E. J. Kramer, Microscopic and molecular fundamentals of crazing, Crazing in Polymers, Springer, Berlin, 1983, p 1–5610.1007/BFb0024055 ↗
30. L. Kurelec, M. Teeuwen, H. Schoffeleers, and R. Deblieck, Strain Hardening Modulus as a Measure of Environmental Stress Crack Resistance of High Density Polyethylene, Polymer, 2005, 46(17), p 6369–637910.1016/j.polymer.2005.05.061 ↗
31. Polyethylene (PE) Materials for Piping Systems —Determination of Strain Hardening Modulus in Relation to Slow Crack Growth—Test Method, 18488, ISO, 2015
32. Y. Zhang and P.Y.B. Jar, Effects of Crosshead Speed on the Quasi-Static Stress-Strain Relationship of Polyethylene (PE) Pipes, J. Press. Vessel Technol., 2016. doi: 10.1115/1.403377710.1115/1.4033777 ↗