JPS55132949A - Defect detector - Google Patents
Defect detectorInfo
- Publication number
- JPS55132949A JPS55132949A JP3992879A JP3992879A JPS55132949A JP S55132949 A JPS55132949 A JP S55132949A JP 3992879 A JP3992879 A JP 3992879A JP 3992879 A JP3992879 A JP 3992879A JP S55132949 A JPS55132949 A JP S55132949A
- Authority
- JP
- Japan
- Prior art keywords
- specimen
- sensors
- waves
- nondevelopable
- plural
- 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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To electively detect the nondevelopable defects existing in the specimen by applying stresses to the specimen, detecting its AE waves with plural sensors and determining level differences.
CONSTITUTION: Plural AE sensors 11aW11d are disposed by leaving the specified spacings on the specimen to which the specified stress is applied and the AE waves of the small amplitude continuous type generated in the defects in the specimen are received by these AE sensors. The respective output signal levels of the AE sensors are detected 13aW13d respectively and the position where the AE waves are generated are determined 16 based on the ratios thereof. As a result of this, the detection and position determination of the nondevelopable defects existing in the specimen may be readily accomplished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3992879A JPS55132949A (en) | 1979-04-03 | 1979-04-03 | Defect detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3992879A JPS55132949A (en) | 1979-04-03 | 1979-04-03 | Defect detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55132949A true JPS55132949A (en) | 1980-10-16 |
Family
ID=12566590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3992879A Pending JPS55132949A (en) | 1979-04-03 | 1979-04-03 | Defect detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55132949A (en) |
-
1979
- 1979-04-03 JP JP3992879A patent/JPS55132949A/en active Pending
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