In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method

Nomura, Kazufumi; Deno, Soshi; Matsuida, Taketo; Otaki, Satoshi; Asai, Satoru

doi:https://doi.org/10.1016/j.ndteint.2022.102662

In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method

Nomura, Kazufumi; Deno, Soshi; Matsuida, Taketo et al.

NDT and E International, 2022, 130, 102662

アクセス数:493件（2025-08-15 06:48 集計）

固定URL: https://hdl.handle.net/11094/88481

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タイトル	In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method
著者	NRID 1000090397729 1000090397729 researchmap permalink kzfmnmr kzfmnmr Scopus Author ID 7402536774 7402536774 著者名 Nomura, Kazufumi
	著者名 Deno, Soshi
	著者名 Matsuida, Taketo
	著者名 Otaki, Satoshi
	NRID 1000020797120 1000020797120 著者名 Asai, Satoru
キーワード等	Laser ultrasonic
	Tungsten inert gas (TIG) arc spot welding
	In-process measurement
	High-temperature
抄録	Understanding the joining process in real time during welding can help improve welding quality, reliability, and manufacturing process efficiency. For this purpose, a laser ultrasonic method that can detect in situ welding quality without contact during welding would be useful. However, the behaviors of ultrasonic propagation as well as melting and joining with increasing temperature remain unclear. Therefore, this study aimed to experimentally investigate the in-process ultrasonic behavior when using the laser ultrasonic method. Lapped tungsten inert gas (TIG) arc spot welding was used for the ultrasonic measurements, wherein the ignition of the TIG arc from the specimen's top surface and laser irradiation for the ultrasonic measurement from the bottom surface occur simultaneously. In this welding, the melting width at the interface of the lapped plates is an important parameter. We investigated the type of ultrasonics used to measure the melting width and examined whether the melting behavior during welding could be experimentally captured. The results show that the ultrasonic velocity decreases as the temperature increases. The echo from the interface between the plates disappears, and the echo from the top surface appears. The disappearance and appearance of each echo facilitate the understanding of the melting behavior during welding.
出版者	Elsevier
収録物名	NDT and E International
巻(号)	130
ページ	102662
刊行年月	2022-09
言語	英語
ハンドルURL	https://hdl.handle.net/11094/88481
PISSN	09638695
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.ndteint.2022.102662
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	NDT and E International. 2022, 130, p. 102662
DC.title	In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method
DC.creator	Nomura, Kazufumi
	Deno, Soshi
	Matsuida, Taketo
	Otaki, Satoshi
	Asai, Satoru
DC.publisher	Elsevier
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-09
DC.identifier	https://doi.org/10.1016/j.ndteint.2022.102662
DC.subject	Laser ultrasonic
	Tungsten inert gas (TIG) arc spot welding
	In-process measurement
	High-temperature
DCTERMS.abstract	Understanding the joining process in real time during welding can help improve welding quality, reliability, and manufacturing process efficiency. For this purpose, a laser ultrasonic method that can detect in situ welding quality without contact during welding would be useful. However, the behaviors of ultrasonic propagation as well as melting and joining with increasing temperature remain unclear. Therefore, this study aimed to experimentally investigate the in-process ultrasonic behavior when using the laser ultrasonic method. Lapped tungsten inert gas (TIG) arc spot welding was used for the ultrasonic measurements, wherein the ignition of the TIG arc from the specimen's top surface and laser irradiation for the ultrasonic measurement from the bottom surface occur simultaneously. In this welding, the melting width at the interface of the lapped plates is an important parameter. We investigated the type of ultrasonics used to measure the melting width and examined whether the melting behavior during welding could be experimentally captured. The results show that the ultrasonic velocity decreases as the temperature increases. The echo from the interface between the plates disappears, and the echo from the top surface appears. The disappearance and appearance of each echo facilitate the understanding of the melting behavior during welding.
DC.rights	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	88481
citation_title	In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method
citation_author	Nomura, Kazufumi
	Deno, Soshi
	Matsuida, Taketo
	Otaki, Satoshi
	Asai, Satoru
citation_publisher	Elsevier
citation_language	英語
citation_date	2022-09
citation_journal_title	NDT and E International
citation_volume	130
citation_firstpage	102662
citation_doi	https://doi.org/10.1016/j.ndteint.2022.102662
citation_public_url	https://hdl.handle.net/11094/88481

In situ measurement of ultrasonic behavior during lap spot welding with laser ultrasonic method

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