Fracture mechanics parameters of multilayer pipes

• Main Authors: Šestáková L., Náhlík L., Hutař P., Knésl Z.
• Format: Article
• Language: English
• Published: University of West Bohemia 2007-10-01
• Series: Applied and Computational Mechanics
• Subjects: Multilayer pipes; K-calibration; T-stress; Finite element method
• Online Access: http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol1no1_p034.pdf

Multilayer pipes consisting of different materials are frequently used in praxis because of partial improvement of the properties of pipe systems. To estimate lifetime of these pipes the basic fracture parameters have to be determined. In this work finite element calculations are applied in order to estimate the stress intensity factor K and T-stress values for a new type of non-homogenous C-shape specimen. The application of calculated K and T values to laboratory estimation of fracture toughness and its transferability to real pipe system is discussed.