The effect of thermal treatments on fracture behaviour of commercial pipe-grade high density polyethylenes was studied. Fracture resistance curves, i.e. fracture toughness versus crack growth curves, were experimentally constructed at -60°C and 23°C and the parameters characterizing fracture initiation and propagation were determined. In addition, a qualitative fracture surface analysis was carried out. Fracture behaviour appears to be complex rather than simply related to the more prominent structural features affected by thermal treatment.
Variations in the fracture behaviour of polyethylene pipe materials induced by thermal treatments
RINK SUGAR, MARTA ELISABETH;PAVAN, ANDREA
1991-01-01
Abstract
The effect of thermal treatments on fracture behaviour of commercial pipe-grade high density polyethylenes was studied. Fracture resistance curves, i.e. fracture toughness versus crack growth curves, were experimentally constructed at -60°C and 23°C and the parameters characterizing fracture initiation and propagation were determined. In addition, a qualitative fracture surface analysis was carried out. Fracture behaviour appears to be complex rather than simply related to the more prominent structural features affected by thermal treatment.File in questo prodotto:
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