JPS643555A - Apparatus for inspecting deterioration of metallic material - Google Patents
Apparatus for inspecting deterioration of metallic materialInfo
- Publication number
- JPS643555A JPS643555A JP15775587A JP15775587A JPS643555A JP S643555 A JPS643555 A JP S643555A JP 15775587 A JP15775587 A JP 15775587A JP 15775587 A JP15775587 A JP 15775587A JP S643555 A JPS643555 A JP S643555A
- Authority
- JP
- Japan
- Prior art keywords
- deterioration
- data
- computer
- life
- coefft
- 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
- 230000006866 deterioration Effects 0.000 title abstract 8
- 239000007769 metal material Substances 0.000 title 1
- 238000007689 inspection Methods 0.000 abstract 3
- 238000011156 evaluation Methods 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 2
- 238000003672 processing method Methods 0.000 abstract 1
- 238000000611 regression analysis Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 abstract 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE:To detect the deterioration of a material non-destructively with good accuracy by detecting the change in a higher harmonic component and previously providing the relative data on the deterioration of the material. CONSTITUTION:An inspection range is inputted from a computer 6, an inspection coil 2A of a scanning driving device 3 is disposed on the front face of an object 1 to be measured and disposes an inspection coil 2B on a reference test piece 11. The data is stored in a floppy disk 7 during the measurement. The data are processed by a computer 6 in accordance with a statistical data processing method. Namely, the measurement data are statistically rearranged by each of parameters. The data base by the multiple regression analysis previously obtd. from a known deteriorated material is inputted to the computer. A deterioration life L1 is estimated by the evaluation equation of the highest correlation coefft. and a deterioration life is estimated by the evaluation equation of the 2nd highest coefft. The deterioration life L1 is decided if the difference between both lives is below the set value. The reliability and confidential interval are then outputted to an external recorder 8. The infeasibility of the deterioration life is decided if the difference is above the set value. The deterioration is thus non-destructively, rapidly and exactly detected and the damage by brittleness is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15775587A JPS643555A (en) | 1987-06-26 | 1987-06-26 | Apparatus for inspecting deterioration of metallic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15775587A JPS643555A (en) | 1987-06-26 | 1987-06-26 | Apparatus for inspecting deterioration of metallic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643555A true JPS643555A (en) | 1989-01-09 |
Family
ID=15656629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15775587A Pending JPS643555A (en) | 1987-06-26 | 1987-06-26 | Apparatus for inspecting deterioration of metallic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643555A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333577A (en) * | 2006-06-15 | 2007-12-27 | Dia Consultant:Kk | Functional diagnosis method for concrete structures |
| JP2009236670A (en) * | 2008-03-27 | 2009-10-15 | Aisin Takaoka Ltd | Evaluation method and device for graphite of cast iron |
-
1987
- 1987-06-26 JP JP15775587A patent/JPS643555A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007333577A (en) * | 2006-06-15 | 2007-12-27 | Dia Consultant:Kk | Functional diagnosis method for concrete structures |
| JP2009236670A (en) * | 2008-03-27 | 2009-10-15 | Aisin Takaoka Ltd | Evaluation method and device for graphite of cast iron |
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