Title:
超音波検査方法、超音波検査装置及び超音波検査方法を用いた高圧燃料供給ポンプの製造方法
Document Type and Number:
Japanese Patent JP6934440
Kind Code:
B2
Abstract:
The purpose of the present invention is to detect a defect that is present above or under an interface of two members in a laser welding portion of a lap joint. To achieve this, a transverse wave generation laser (LaTT) and a longitudinal wave generation laser (LaTL) are irradiated to different locations of one side of a welding line (We). A transverse wave reception laser (LaRT) and a longitudinal wave reception laser (LaRL) are irradiated to different locations of another side of the welding line (We). A defect (De1) at a location that is deeper than an interface (SB) between a first member (201) and a second member (202) is detected by detecting a transverse ultrasonic wave (WT) with the transverse wave reception laser (LaRT). A defect (De3) at a location that is shallower than the interface (SB) is detected by detecting a longitudinal ultrasonic wave (WL) with the longitudinal wave reception laser (LaRL).
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Inventors:
Satoshi Kitazawa
Masayuki Suganami
Shinya Nakatani
Masayuki Suganami
Shinya Nakatani
Application Number:
JP2018052237A
Publication Date:
September 15, 2021
Filing Date:
March 20, 2018
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
G01N29/24; B23K26/00; B23K31/00; F02M59/44; F02M63/00; G01N29/04; G01N29/26
Domestic Patent References:
| JP201581858A | ||||
| JP2008151763A | ||||
| JP2002213936A | ||||
| JP2006313115A | ||||
| JP2004191088A | ||||
| JP2017161441A |
Foreign References:
| WO2016163034A1 | ||||
| US20060260403 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation