JPS55109581A - Quality monitoring method of resistance welding - Google Patents
Quality monitoring method of resistance weldingInfo
- Publication number
- JPS55109581A JPS55109581A JP1732679A JP1732679A JPS55109581A JP S55109581 A JPS55109581 A JP S55109581A JP 1732679 A JP1732679 A JP 1732679A JP 1732679 A JP1732679 A JP 1732679A JP S55109581 A JPS55109581 A JP S55109581A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- peak
- value
- defective
- detected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To perform the captioned monitoring of spot welding with good accuracy by judging the non-defective and defective of welding from the ratio between the 1st peak of the effective value signal of AE generated during welding and the 2nd peak of the AE signal generated after supply of welding current.
CONSTITUTION: The AE generated from welding material 2 is detected by the AE sensor 3 mounted to an electrode part 1 and is amplified by amplifiers 4, 6. The AE waveforms having been amplified are detected with a detecting circuit 7 and are converted to effective value energy by an effective value conversion circuit 8, whereby the AE effective value voltage 1st peak value during supplying of welding current and the 2nd peak value after the current supply are detected. Thereafter AE peak effective ratio (2nd peak value/1st peak value ×100) is outputted by an arithmetic circuit 9 and is compared with a set value 10 in a decision circuit 11, whereby the non-defective and defective of the welding are determined.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1732679A JPS55109581A (en) | 1979-02-19 | 1979-02-19 | Quality monitoring method of resistance welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1732679A JPS55109581A (en) | 1979-02-19 | 1979-02-19 | Quality monitoring method of resistance welding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55109581A true JPS55109581A (en) | 1980-08-23 |
Family
ID=11940912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1732679A Pending JPS55109581A (en) | 1979-02-19 | 1979-02-19 | Quality monitoring method of resistance welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55109581A (en) |
-
1979
- 1979-02-19 JP JP1732679A patent/JPS55109581A/en active Pending
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