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Mansoor, Bilal
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Publications (7/7 displayed)
- 2023Influence of Microstructure on the Mechanical and Corrosion Response of a Friction Stir-Extruded WE43 Magnesium Rodcitations
- 2020Effect of UV-aging on the mechanical and fracture behavior of low density polyethylenecitations
- 2018Effect of UV Ageing on the fatigue life of bulk polyethylenecitations
- 2018Effect of UV Ageing on the fatigue life of bulk polyethylenecitations
- 2017Effect of vanadium micro-alloying on the microstructural evolution and creep behavior of Al-Er-Sc-Zr-Si alloyscitations
- 2016Microstructural observations and tensile fracture behavior of FSW twin roll cast AZ31 Mg sheetscitations
- 2016Mechanical, microstructural and fracture properties of dissimilar welds produced by friction stir welding of AZ31B and Al6061citations
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document
Effect of UV Ageing on the fatigue life of bulk polyethylene
Abstract
Polymers operating in various weathering conditions must be assessed for lifetime performance. Particularly, ultraviolet (UV) radiations alters the chemical structure and therefore affect the mechanical and fatigue properties. The UV irradiation alters the polymer chemical structure, which results into a degradation of the mechanical and fatigue behavior of the polymer. The polymer properties degradation due to UV irradiation is the result of a competitive process of chain scission versus post-crosslinking. Although few studied investigated the effect of UV irradiation on the mechanical behaviour of thermoplastics, fewer examined the UV irradiation effect on the fatigue life of polymers. This study focuses on investigating the effect of UV irradiation on the fatigue properties of bulk semi-crystalline polymer; the low density Polyethylene (LDPE). Tensile specimens were exposed to different dose values of UV irradiation then subjected to fatigue loading. The fatigue tests were achieved under constant stress amplitude at a frequency of 1Hz. The results show an important decrease of the fatigue limit with increasing absorbed UV irradiation dose.