JPS6418041A - Fatigue tester for material - Google Patents
Fatigue tester for materialInfo
- Publication number
- JPS6418041A JPS6418041A JP17386987A JP17386987A JPS6418041A JP S6418041 A JPS6418041 A JP S6418041A JP 17386987 A JP17386987 A JP 17386987A JP 17386987 A JP17386987 A JP 17386987A JP S6418041 A JPS6418041 A JP S6418041A
- Authority
- JP
- Japan
- Prior art keywords
- detector
- voltage
- output
- occurs
- abnormality
- 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 Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
PURPOSE:To enable the obtaining of a highly accurate recording data while automatically stopping a driver, by detecting an abnormal distortion and a fine cracking of material with a strain gauge. CONSTITUTION:When abnormality such as distortion and cracking occurs in material 2, a bridge circuit of a gauge box 3 gets unbalanced to transmit an abnormality signal to a strain amplifier 4. The abnormality signal is amplified with the strain amplifier 4 to be transmitted to an electromagnetic oscillograph 5 while being done to a detector 10. The abnormality signal inputted into the detector 10 is a bipolar signal positive and negative in the voltage and when it is an input signal positive in the voltage, an operational amplifier is operated to output an inversion output amplified at an output terminal. When it is an input signal negative in the voltage, the operational amplifier is cut off with the action of a diode. In other words, in case any abnormal distortion occurs, a driver 6 is stopped based on an output of the detector 10 thereby enabling accurate detection of a moment at which an abnormal distortion or a fine cracking of the material 2 occurs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17386987A JPS6418041A (en) | 1987-07-14 | 1987-07-14 | Fatigue tester for material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17386987A JPS6418041A (en) | 1987-07-14 | 1987-07-14 | Fatigue tester for material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418041A true JPS6418041A (en) | 1989-01-20 |
Family
ID=15968641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17386987A Pending JPS6418041A (en) | 1987-07-14 | 1987-07-14 | Fatigue tester for material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418041A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008137744A (en) * | 2006-11-30 | 2008-06-19 | Toppan Forms Co Ltd | Paper separating device |
-
1987
- 1987-07-14 JP JP17386987A patent/JPS6418041A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008137744A (en) * | 2006-11-30 | 2008-06-19 | Toppan Forms Co Ltd | Paper separating device |
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