SE325425B - - Google Patents
Info
- Publication number
- SE325425B SE325425B SE393368A SE393368A SE325425B SE 325425 B SE325425 B SE 325425B SE 393368 A SE393368 A SE 393368A SE 393368 A SE393368 A SE 393368A SE 325425 B SE325425 B SE 325425B
- Authority
- SE
- Sweden
- Prior art keywords
- area
- feelers
- internal stresses
- spring
- march
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
Landscapes
- Physics & Mathematics (AREA)
- General 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)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
1,165,097. Determining internal stresses. NIKEX NEHEZIPARI KULKERESKEDELMI VALLALAT. March 15, 1968 [March 23, 1967], No. 12726/68. Headings G1N and G1S. Apparatus for determining the internal stresses in a solid body comprises means for heating a local area for a short time and measuring the subsequential dimensional changes round this area which represent the sense and magnitude of the internal stresses, and can be evaluated by reference to a predetermined calibration chart. As shown Figs.1, 2, the heat source comprises a filament lamp 26 focused by tube 27 on an area 11 of the test body 45, and arranged to be switched on for ten seconds. The dimensional changes over the area 11 are measured 80 seconds later by four pairs of feelers 10a, 10b symmetrically located round the area 11. Each feeler point is forced against the surface of the test body by a cam 15 via a spring 13 and quartz tube 12 carrying the feeler 10a at one end and pressing against a spring member 30 at the other end. Strain gauge resistors d 1 , d 2 are mounted on spring 30. The initial stress in member 30 is adjusted by knob 34 and screw thread 32. Strain ganges d 1 , d 2 , d 3 and d 4 associated with feelers 10a, 10b are connected in a bridge circuit, which measures the displacement of feelers 10a, 10b subsequent to a heating period. By plotting the outputs of each of the four pairs of feelers, the magnitude and sign of the stress in the area 11 can be shown, e.g. on a polar diagram.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUVA001214 | 1967-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE325425B true SE325425B (en) | 1970-06-29 |
Family
ID=11002272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE393368A SE325425B (en) | 1967-03-23 | 1968-03-25 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4823035B1 (en) |
| AT (1) | AT283780B (en) |
| CH (1) | CH469980A (en) |
| DE (1) | DE1698150B1 (en) |
| DK (1) | DK134165B (en) |
| FR (1) | FR1556895A (en) |
| GB (1) | GB1165097A (en) |
| NL (1) | NL6804141A (en) |
| SE (1) | SE325425B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0820342B2 (en) * | 1989-03-30 | 1996-03-04 | 日立金属株式会社 | Thermal stress prediction method for heat resistant materials |
| DE102005054803A1 (en) * | 2005-11-15 | 2007-05-24 | Horst Benzing-Feinwerktechnik Gmbh | Method and device for nondestructive measurement of surface tensions on objects |
| CN103557778B (en) * | 2013-10-11 | 2016-03-16 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of measurement mechanism for measuring engine fuel house steward deflection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE948819C (en) * | 1952-11-22 | 1956-09-06 | Daimler Benz Ag | Strain gauge |
| DE1153192B (en) * | 1956-07-19 | 1963-08-22 | Saab Scania Ab | Strain gauge |
-
1968
- 1968-03-15 DE DE19681698150 patent/DE1698150B1/en active Pending
- 1968-03-15 GB GB1272668A patent/GB1165097A/en not_active Expired
- 1968-03-16 CH CH422468A patent/CH469980A/en unknown
- 1968-03-19 AT AT271768A patent/AT283780B/en not_active IP Right Cessation
- 1968-03-22 FR FR1556895D patent/FR1556895A/fr not_active Expired
- 1968-03-22 NL NL6804141A patent/NL6804141A/xx unknown
- 1968-03-22 DK DK127468A patent/DK134165B/en not_active IP Right Cessation
- 1968-03-23 JP JP1888068A patent/JPS4823035B1/ja active Pending
- 1968-03-25 SE SE393368A patent/SE325425B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK134165B (en) | 1976-09-20 |
| FR1556895A (en) | 1969-02-07 |
| DE1698150B1 (en) | 1972-01-13 |
| AT283780B (en) | 1970-08-25 |
| DK134165C (en) | 1977-03-28 |
| CH469980A (en) | 1969-03-15 |
| JPS4823035B1 (en) | 1973-07-10 |
| GB1165097A (en) | 1969-09-24 |
| NL6804141A (en) | 1968-09-24 |
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