DE2049486A1 - Material Prüfgerät - Google Patents
Material PrüfgerätInfo
- Publication number
- DE2049486A1 DE2049486A1 DE19702049486 DE2049486A DE2049486A1 DE 2049486 A1 DE2049486 A1 DE 2049486A1 DE 19702049486 DE19702049486 DE 19702049486 DE 2049486 A DE2049486 A DE 2049486A DE 2049486 A1 DE2049486 A1 DE 2049486A1
- Authority
- DE
- Germany
- Prior art keywords
- signal
- output
- bridge
- responsive
- demodulated signal
- 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
- 238000004154 testing of material Methods 0.000 title description 3
- 239000000523 sample Substances 0.000 claims description 36
- 238000004804 winding Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000000737 periodic effect Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims 8
- 239000011162 core material Substances 0.000 description 12
- 239000013598 vector Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101150007604 TRIM44 gene Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9046—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents by analysing electrical signals
- G01N27/9053—Compensating for probe to workpiece spacing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86543269A | 1969-10-10 | 1969-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2049486A1 true DE2049486A1 (de) | 1971-04-22 |
Family
ID=25345503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702049486 Pending DE2049486A1 (de) | 1969-10-10 | 1970-10-08 | Material Prüfgerät |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2049486A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2065234A5 (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3005915C2 (de) * | 1980-02-16 | 1985-01-10 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Wirbelstromprüfgerät für Oberflächenfehler |
| FR2502337A1 (fr) * | 1981-03-23 | 1982-09-24 | Commissariat Energie Atomique | Procede de controle non destructif par courants de foucault avec correction des effets d'entrefer et dispositif de mise en oeuvre |
| US6844722B2 (en) | 2001-08-09 | 2005-01-18 | Avistar, Inc. | Mutual inductance bridge for detection of degradation in metallic components |
-
1970
- 1970-10-08 DE DE19702049486 patent/DE2049486A1/de active Pending
- 1970-10-09 FR FR7036507A patent/FR2065234A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2065234A5 (enrdf_load_stackoverflow) | 1971-07-23 |
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