Improving fatigue property of linear friction welded cruciform joints of low carbon steel

Miao, Huilin; Yamashita, Takayuki; Ushioda, Kohsaku; Tsutsumi, Seiichiro; Morisada, Yoshiaki; Fujii, Hidetoshi

doi:https://doi.org/10.1016/j.jmapro.2025.04.093

Improving fatigue property of linear friction welded cruciform joints of low carbon steel

Miao, Huilin; Yamashita, Takayuki; Ushioda, Kohsaku et al.

Journal of Manufacturing Processes, 2025, 146, 55-64

Number of Access:30（2025-08-13 23:50 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102200

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Title	Improving fatigue property of linear friction welded cruciform joints of low carbon steel
Creator	CreatorName Miao, Huilin
	NRID 1000020829080 1000020829080 researchmap permalink mart111 mart111 Scopus Author ID 57195308182 57195308182 CreatorName Yamashita, Takayuki
	CreatorName Ushioda, Kohsaku
	NRID 1000070344702 1000070344702 ORCID 0000-0002-9279-0657 0000-0002-9279-0657 researchmap permalink tsutsumi tsutsumi Scopus Author ID 7102881459 7102881459 CreatorName Tsutsumi, Seiichiro
	NRID 1000000416356 1000000416356 researchmap permalink morisada morisada CreatorName Morisada, Yoshiaki
	NRID 1000000247230 1000000247230 ORCID 0000-0002-5023-3844 0000-0002-5023-3844 researchmap permalink read0051741 read0051741 Scopus Author ID 7403071460 7403071460 CreatorName Fujii, Hidetoshi
Subject	Cruciform joint
	Fatigue life
	Linear friction welding
	Low carbon steel
Description	Miao H., Yamashita T., Ushioda K., et al. Improving fatigue property of linear friction welded cruciform joints of low carbon steel. Journal of Manufacturing Processes 146, 55 (2025); https://doi.org/10.1016/j.jmapro.2025.04.093.
Abstract	Improving the fatigue performance of welded structures is a critical engineering challenge. While previous studies have shown that modifying the weld toe geometry can enhance the fatigue properties of linear friction welded (LFWed) butt joints, industrial applications often require cruciform joints. In this study, we aimed to improve the fatigue properties by fabricating a cruciform joint using linear friction welding (LFW) and changing the welding conditions. LFWed cruciform joints were fabricated using short-side oscillation, in which the long side of the rib vibrated perpendicular to the oscillation direction, as established in our previous study. The results showed that all LFWed cruciform joints with flash exhibited superior fatigue performance, with fatigue cycles exceeding FAT63, the design curve for cruciform joints defined by the International Institute of Welding. Increasing the upset was found to enhance fatigue life more effectively than increasing post-oscillation pressure. When both the post-oscillation pressure and upset were increased, fracture occurred at the weld toe, regardless of fatigue stress level. Under a nominal stress range of 161 MPa, the longest fatigue life was observed, with the joint remaining unbroken even after 1 × 10⁷ cycles. The transition from welding interface fracture to weld toe fracture, which significantly improved fatigue life, was influenced by an increased welding interface area due to a larger upset and a corresponding reduction in local stress at the weld toe of the welding interface. These findings indicate that increasing the upset to expand the welding interface area is an effective approach to improve the fatigue properties of LFWed cruciform joints. To fabricate defect-free cruciform joints using LFW, short-side oscillation with a larger upset is recommended.
Publisher	Elsevier Ltd
Source Title	Journal of Manufacturing Processes
Volume (Issue)	146
Page	55-64
Date of Issued	2025-05-01
Language	English
Handle URL	https://hdl.handle.net/11094/102200
PISSN	15266125
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.jmapro.2025.04.093
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Manufacturing Processes. 2025, 146, p. 55-64
DC.title	Improving fatigue property of linear friction welded cruciform joints of low carbon steel
DC.creator	Miao, Huilin
	Yamashita, Takayuki
	Ushioda, Kohsaku
	Tsutsumi, Seiichiro
	Morisada, Yoshiaki
	Fujii, Hidetoshi
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-05-01
DC.identifier	https://doi.org/10.1016/j.jmapro.2025.04.093
DC.subject	Cruciform joint
	Fatigue life
	Linear friction welding
	Low carbon steel
DC.description	Miao H., Yamashita T., Ushioda K., et al. Improving fatigue property of linear friction welded cruciform joints of low carbon steel. Journal of Manufacturing Processes 146, 55 (2025); https://doi.org/10.1016/j.jmapro.2025.04.093.
DCTERMS.abstract	Improving the fatigue performance of welded structures is a critical engineering challenge. While previous studies have shown that modifying the weld toe geometry can enhance the fatigue properties of linear friction welded (LFWed) butt joints, industrial applications often require cruciform joints. In this study, we aimed to improve the fatigue properties by fabricating a cruciform joint using linear friction welding (LFW) and changing the welding conditions. LFWed cruciform joints were fabricated using short-side oscillation, in which the long side of the rib vibrated perpendicular to the oscillation direction, as established in our previous study. The results showed that all LFWed cruciform joints with flash exhibited superior fatigue performance, with fatigue cycles exceeding FAT63, the design curve for cruciform joints defined by the International Institute of Welding. Increasing the upset was found to enhance fatigue life more effectively than increasing post-oscillation pressure. When both the post-oscillation pressure and upset were increased, fracture occurred at the weld toe, regardless of fatigue stress level. Under a nominal stress range of 161 MPa, the longest fatigue life was observed, with the joint remaining unbroken even after 1 × 10⁷ cycles. The transition from welding interface fracture to weld toe fracture, which significantly improved fatigue life, was influenced by an increased welding interface area due to a larger upset and a corresponding reduction in local stress at the weld toe of the welding interface. These findings indicate that increasing the upset to expand the welding interface area is an effective approach to improve the fatigue properties of LFWed cruciform joints. To fabricate defect-free cruciform joints using LFW, short-side oscillation with a larger upset is recommended.
DC.rights	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	102200
citation_title	Improving fatigue property of linear friction welded cruciform joints of low carbon steel
citation_author	Miao, Huilin
	Yamashita, Takayuki
	Ushioda, Kohsaku
	Tsutsumi, Seiichiro
	Morisada, Yoshiaki
	Fujii, Hidetoshi
citation_publisher	Elsevier Ltd
citation_language	English
citation_date	2025-05-01
citation_journal_title	Journal of Manufacturing Processes
citation_volume	146
citation_firstpage	55
citation_lastpage	64
citation_doi	https://doi.org/10.1016/j.jmapro.2025.04.093
citation_public_url	https://hdl.handle.net/11094/102200

Improving fatigue property of linear friction welded cruciform joints of low carbon steel

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