Title:
ULTRASONIC WAVE INSPECTION METHOD, ULTRASONIC WAVE INSPECTION DEVICE, AND HIGH-PRESSURE FUEL SUPPLY PUMP MANUFACTURING METHOD USING ULTRASONIC WAVE INSPECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/181243
Kind Code:
A1
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).
Inventors:
KITAZAWA SOU (JP)
SUGANAMI MASAYUKI (JP)
NAKATANI SHINYA (JP)
SUGANAMI MASAYUKI (JP)
NAKATANI SHINYA (JP)
Application Number:
PCT/JP2019/003951
Publication Date:
September 26, 2019
Filing Date:
February 05, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
G01N29/24; B23K26/00; B23K31/00; F02M59/44; F02M63/00; G01N29/04; G01N29/26
Domestic Patent References:
| WO2016163034A1 | 2016-10-13 |
Foreign References:
| JP2015081858A | 2015-04-27 | |||
| JP2008151763A | 2008-07-03 | |||
| JP2002213936A | 2002-07-31 | |||
| JP2006313115A | 2006-11-16 | |||
| JP2004191088A | 2004-07-08 | |||
| JP2017161441A | 2017-09-14 | |||
| US20060260403A1 | 2006-11-23 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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