. . . "26310" . . . . "Vlach, Bohumil" . . "1" . "Multilayer pipes composed of various materials improve partially the properties of a pipes system and are frequently used in service. To estimate the lifetime of these pipes the basic fracture parameters have to be measured. In the contribution a new approach to this estimation is presented. Special type of C-shaped non-homogeneous fracture mechanics specimen machined directly from the pipe was suggested, numerically analyzed and tested. Corresponding K values are calculated by FEM. As results the fracture toughness values of HDPE pipes material are obtained." . "Strength of materials" . "[EDC01D6A8219]" . . "40" . "368476" . . "Fiedler, Lubom\u00EDr" . . "Fracture Toughness of Multilayer Pipes"@en . "Fracture Toughness of Multilayer Pipes"@en . "3"^^ . "P(GA101/05/0227)" . "0039-2316" . "3"^^ . . . "Nezbedov\u00E1, Eva" . "4"^^ . . . "Multilayer pipes composed of various materials improve partially the properties of a pipes system and are frequently used in service. To estimate the lifetime of these pipes the basic fracture parameters have to be measured. In the contribution a new approach to this estimation is presented. Special type of C-shaped non-homogeneous fracture mechanics specimen machined directly from the pipe was suggested, numerically analyzed and tested. Corresponding K values are calculated by FEM. As results the fracture toughness values of HDPE pipes material are obtained."@en . "polyethylene pipes, fracture toughness, K- calibration"@en . . "RIV/00216305:26310/08:PU73469!RIV10-GA0-26310___" . "Fracture Toughness of Multilayer Pipes" . . "RIV/00216305:26310/08:PU73469" . "Fracture Toughness of Multilayer Pipes" . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" .