JPH0224321B2 - - Google Patents
Info
- Publication number
- JPH0224321B2 JPH0224321B2 JP6364281A JP6364281A JPH0224321B2 JP H0224321 B2 JPH0224321 B2 JP H0224321B2 JP 6364281 A JP6364281 A JP 6364281A JP 6364281 A JP6364281 A JP 6364281A JP H0224321 B2 JPH0224321 B2 JP H0224321B2
- Authority
- JP
- Japan
- Prior art keywords
- crack
- signal
- length
- circuit
- measuring device
- 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.)
- Expired
Links
- 238000005259 measurement Methods 0.000 claims description 21
- 239000003550 marker Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6364281A JPS57178133A (en) | 1981-04-27 | 1981-04-27 | Automatic measuring device of crack length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6364281A JPS57178133A (en) | 1981-04-27 | 1981-04-27 | Automatic measuring device of crack length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57178133A JPS57178133A (en) | 1982-11-02 |
| JPH0224321B2 true JPH0224321B2 (enrdf_load_stackoverflow) | 1990-05-29 |
Family
ID=13235205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6364281A Granted JPS57178133A (en) | 1981-04-27 | 1981-04-27 | Automatic measuring device of crack length |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57178133A (enrdf_load_stackoverflow) |
-
1981
- 1981-04-27 JP JP6364281A patent/JPS57178133A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57178133A (en) | 1982-11-02 |
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