Title:
【発明の名称】溶接接合部の評価方法
Document Type and Number:
Japanese Patent JPH07509562
Kind Code:
A
Abstract:
PCT No. PCT/DE93/00675 Sec. 371 Date Jan. 31, 1995 Sec. 102(e) Date Jan. 31, 1995 PCT Filed Aug. 2, 1993 PCT Pub. No. WO94/03799 PCT Pub. Date Feb. 17, 1994A process for on-line assessment of resistance weldings uses an ultrasonic source which impinges shear waves onto the weld region and an ultrasound receiver. The time at which the melting point of the weld material is reached and a weld nugget begins to form is determined from the output signal of the ultrasound receiver. The volume V of the weld nugget is calculated during the welding operation from the diminishment of shear waves after having reached the melting temperature.
Inventors:
Vash Keith Eckhart
Application Number:
JP50489494A
Publication Date:
October 19, 1995
Filing Date:
August 02, 1993
Export Citation:
Assignee:
Fraunhofer-Gesellschaftsza Felderung der Angewanten Vorschunk A. Fao.
International Classes:
B23K11/25; B23K26/00; G01N29/00; G01N29/07; G01N29/11; G01N29/04; G01N29/32; (IPC1-7): G01N29/18; G01N29/08; B23K26/00; B23K11/25
Attorney, Agent or Firm:
Masayoshi Misawa