Conference Proceedings
Fatigue assessment of welded joints in API 579-1/ASME FFS-1 2016-existing methods and new developments
David A Osage, Pingsha Dong, Daniel Spring, F Lefebvre (ed.), P Souquet (ed.)
7TH INTERNATIONAL CONFERENCE ON FATIGUE DESIGN, FATIGUE DESIGN 2017 | ELSEVIER SCIENCE BV | Published : 2018
Abstract
The 3rd Edition of API 579-1/ASME FFS-1 2016 Fitness-For-Service includes a new Part 14 dedicated to fatigue assessment. An important section in this part covers the fatigue assessment of welded joints. In this paper, an overview of the fatigue methods for welded joints is provided and extensions are recommended. First, an overview is given of the classical fatigue method used in the ASME B&PV Code based on smooth bar fatigue curves in conjunction with a fatigue strength reduction factor. In addition, the mesh insensitive structural stress method is outlined using an equivalent stress parameter based on fracture mechanics considerations in conjunction with a master S-N curve based on the ana..
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Awarded by Traction Power National Key Laboratory Open Competition Grant
Funding Acknowledgements
The authors would like to acknowledge Debbie Samodell for help in preparing this manuscript. PD acknowledges the support of this work through a grant from the National Research Foundation of Korea (NRF) funded by the Korea government (MEST) through GCRC-SOP at University of Michigan under Project 2-1: Reliability and Strength Assessment of Core Parts and Material System, and the support made possible by Traction Power National Key Laboratory Open Competition Grant (No. TPL 1605).