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AuthorEl Qassem, Zuhair Mohamed
AuthorKassem, Mohamed El-Said
Available date2009-11-25T13:06:18Z
Publication Date1997
Publication NameEngineering Journal of Qatar University
CitationEngineering Journal of Qatar University, 1997, Vol. 10, Pages 133-142.
URIhttp://hdl.handle.net/10576/7974
AbstractUltrasonic pulse-echo technique, tensile testing and thermal gravimetric analysis have been utilised to characterise and monitor the effect of y irradiation on the physicomechanical properties of low density polyethylene LDPE, grade FB 5005. The sonic modulus, elastic modulus, rupture stress and decomposition temperature exhibit a minimum value at 2 Mrad irradiated samples, whereas, toughness and rupture strain exhibit a maximum at the same irradiation dose. The changes in mechanical properties (rupture stress and toughness) correlate well with decomposition temperature and the change in the sonic modulus correlates as well with elastic modulus for the tested material. The results are discussed in terms of cross-linking. Below 2 Mrad the loss of crystallinity overrides the effect of cross-linking, whereas above 2 Mrad the cross-linking dominates.
Languageen
PublisherQatar University
SubjectEngineering: Research & Technology
TitleUltrasonic Characterization, Tensile Testing And Thermal Properties Of Y Irradiated Low Density Polyethylene, Fb 5005
TypeArticle
Pagination133-142
Volume Number10


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