JPH0549935B2 - - Google Patents
Info
- Publication number
- JPH0549935B2 JPH0549935B2 JP1295281A JP29528189A JPH0549935B2 JP H0549935 B2 JPH0549935 B2 JP H0549935B2 JP 1295281 A JP1295281 A JP 1295281A JP 29528189 A JP29528189 A JP 29528189A JP H0549935 B2 JPH0549935 B2 JP H0549935B2
- Authority
- JP
- Japan
- Prior art keywords
- spectrum
- vibration
- measured
- defect
- peak value
- 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 - Fee Related
Links
- 230000007547 defect Effects 0.000 claims description 152
- 238000001228 spectrum Methods 0.000 claims description 130
- 238000001845 vibrational spectrum Methods 0.000 claims description 68
- 230000005284 excitation Effects 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 25
- 238000011156 evaluation Methods 0.000 claims description 17
- 230000005484 gravity Effects 0.000 claims description 9
- 238000010183 spectrum analysis Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 description 28
- 238000005259 measurement Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1295281A JPH03156363A (ja) | 1989-11-14 | 1989-11-14 | 欠陥位置評定方法及び装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1295281A JPH03156363A (ja) | 1989-11-14 | 1989-11-14 | 欠陥位置評定方法及び装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03156363A JPH03156363A (ja) | 1991-07-04 |
| JPH0549935B2 true JPH0549935B2 (enExample) | 1993-07-27 |
Family
ID=17818571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1295281A Granted JPH03156363A (ja) | 1989-11-14 | 1989-11-14 | 欠陥位置評定方法及び装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03156363A (enExample) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4511695B2 (ja) * | 2000-07-25 | 2010-07-28 | 三井造船株式会社 | 探傷方法および装置 |
| JP4598433B2 (ja) * | 2003-05-13 | 2010-12-15 | 積水化学工業株式会社 | 埋設管の検査方法 |
| JP5432618B2 (ja) * | 2009-07-15 | 2014-03-05 | 日本電信電話株式会社 | 固有振動モードを利用したコンクリートポールの損傷検知システム及び方法 |
| JP5280407B2 (ja) * | 2010-06-09 | 2013-09-04 | 日本電信電話株式会社 | 柱状構造物の損傷検知方法、損傷検知装置およびプログラム |
| US8171797B2 (en) * | 2010-09-23 | 2012-05-08 | General Electric Company | Sideband energy ratio method for gear mesh fault detection |
| KR101069515B1 (ko) * | 2011-05-03 | 2011-09-30 | 이근영 | 면 조리용 압력솥 |
-
1989
- 1989-11-14 JP JP1295281A patent/JPH03156363A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03156363A (ja) | 1991-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |