کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5207234 1382341 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of the remaining lifetime of polyethylene pipes after up to 30 years in use
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Prediction of the remaining lifetime of polyethylene pipes after up to 30 years in use
چکیده انگلیسی
Plastics pipes made of polyethylene (PE) play an outstanding role in gas and water supply. While for modern pipe grades typical lifetimes of 50 years are taken for granted and service times of 100 years are discussed, pipes made of PE with a lower performance have been used for decades. As the repair and rehabilitation of existing pipe systems involve immense costs, the question of their qualitative condition has to be considered. In this paper, four different pipes used in the gas and water distribution in Austria with an age up to 30 years have been investigated. After a morphological and mechanical study, particular attention was paid to material stabilization, which is essential for long-term applications. Fracture mechanics tools have been used to gain information on the resistance to crack initiation and slow crack growth. Furthermore, a fracture mechanics extrapolation procedure has been applied to predict the remaining lifetime of the pipes. The results have indicated that all the pipes investigated are still in a very good condition and are likely to be sufficiently safe to remain in use.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 28, Issue 7, October 2009, Pages 737-745
نویسندگان
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