Prethodno priopćenje

Life prediction of damaged PE 80 gas pipes

Zlatko Tonković ; HEP - Plin d.o.o., HR-31000 Osijek, Hrvatska
Marija Somolanji ; HEP - Plin d.o.o., HR-31000 Osijek, Hrvatska
Josip Stojšić ; Sveučilište J. J. Strossmayera u Osijeku, Strojarski fakultet u Slavonskom Brodu, 35000 Slavonski Brod, Hrvatska

Sažetak

This paper deals with new approach to life estimation of damaged thick-walled gas pipes made of high-density polyethylene (PE 80). The most common approaches to polyethylene gas pipes durability prediction rely on methods of fracture mechanics, which involve defining the stress intensity factor experimentally. However, such tests are carried out on standardized specimens neglecting the influence of real pipe geometry and processing method. On the
other hand, these data are not always available to gas distributors, which are responsible for installed pipelines durability. Investigations based on long-term experiments involving three parameters: pressure, length and depth of initial notch type crack gave empirical mathematical model for life prediction of polyethylene gas pipes.

Ključne riječi

pipe damages; pipe bursting time; PE 80 pipes

Hrčak ID:

40961

URI

https://hrcak.srce.hr/40961

Datum izdavanja:

30.9.2009.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.932 *