Study on non-contact measurement method of resistance spot weld nugget diameter using laser ultrasonic technique

Nomura, Kazufumi; Mishima, Shintaro; Deno, Soshi et al.

NDT and E International, 2023, 140, 102973

Number of Access:518（2025-08-14 12:35 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/93239

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Title
Study on non-contact measurement method of resistance spot weld nugget diameter using laser ultrasonic technique
Creator
NRID
1000090397729 1000090397729
researchmap permalink
kzfmnmr kzfmnmr
Scopus Author ID
7402536774 7402536774
CreatorName
Nomura, Kazufumi
CreatorName
Mishima, Shintaro
CreatorName
Deno, Soshi
NRID
1000030314371 1000030314371
ORCID
0000-0003-2624-5092 0000-0003-2624-5092
researchmap permalink
read0068627 read0068627
Scopus Author ID
7402240743 7402240743
CreatorName
Sano, Tomokazu
Subject
Diffraction wave
Laser ultrasonic
Non-contact
Nugget diameter
Resistance spot welding
Thin plate
Description
Nomura K., Mishima S., Deno S., et al. Study on non-contact measurement method of resistance spot weld nugget diameter using laser ultrasonic technique. NDT and E International 140, 102973 (2023); https://doi.org/10.1016/j.ndteint.2023.102973.
Abstract
Resistance spot welding can instantaneously join two or more plates by the resistance heating of the metal and is in high demand owing to its high productivity and high-work efficiency. For the quality control of resistance spot welding, the size and quality of the welded part, called the nugget, are important. Therefore, this study aims to establish a highly efficient and high-speed resistance spot-weld inspection method that can be applied to whole-lot inspection, which is currently a difficult process. The objective of this study is to measure the nugget diameter using laser ultrasonic technique that enable remote, non-contact ultrasonic inspection. An investigation of the available ultrasonic waves using simulated test specimens demonstrated the feasibility of estimating the distance from the generation/detection point to the joint using the diffraction of the Lamb wave, which can propagate long distances in a thin plate. By measuring the actual resistance spot welding specimens, it was determined that differences in the nugget diameter of approximately 0.5 mm could be clearly distinguished from the arrival time of the diffraction waves. It was also inferred that the nugget diameter could be calculated by determining the propagation velocity of the diffraction wave with a similar accuracy to that of the measurement using a contact-type probe.
Publisher
Elsevier Ltd
Source Title
NDT and E International
Volume (Issue)
140
Page
102973
Date of Issued
2023-12-01
Language
English
Handle URL
https://hdl.handle.net/11094/93239
PISSN
09638695
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.ndteint.2023.102973
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