Effect of static load during HFMI treatment on fatigue strength and residual stress field of longitudinal atachment welded joints

Autor:	Kazuo Tateishi, Takeshi Hanji, Suguru Kano, Masaru Shimizu
Rok vydání:	2021
Předmět:	Materials science business.industry Mechanical Engineering Metals and Alloys Welding Structural engineering Fatigue limit Finite element method law.invention Stress (mechanics) Mechanics of Materials law Residual stress Solid mechanics Ultimate tensile strength business Joint (geology)
Zdroj:	Welding in the World. 66:685-697
ISSN:	1878-6669 0043-2288
DOI:	10.1007/s40194-021-01208-x
Popis:	In this study, the effect of the stress state of a welded joint during application of high-frequency mechanical impact (HFMI) treatment on the resulting fatigue strength was investigated through fatigue tests and finite element analysis. A high-frequency impact treatment tool was used as the HFMI device. Longitudinal attachment welded joints were treated under a state in which a static load was applied and subsequently tested under a constant stress amplitude with stress ratios of 0 or 0.5. In addition, residual stress measurements and finite element analysis simulating welding and treatment processes were performed. The results indicate that the HFMI treatment is beneficial even when applied under a static tensile load, as the resulting compressive residual stresses are similar regardless of the stress state in the joint during treatment, meaning that the HFMI is applicable to existing structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6271342db0958aefcd6de5aed7c42c8b https://doi.org/10.1007/s40194-021-01208-x Zobrazit plný text záznamu Full text from SpringerLink