SU518615A1 - Method of measuring rheological stresses - Google Patents
Method of measuring rheological stressesInfo
- Publication number
- SU518615A1 SU518615A1 SU2042172A SU2042172A SU518615A1 SU 518615 A1 SU518615 A1 SU 518615A1 SU 2042172 A SU2042172 A SU 2042172A SU 2042172 A SU2042172 A SU 2042172A SU 518615 A1 SU518615 A1 SU 518615A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- stresses
- measuring rheological
- measuring
- rheological stresses
- measurement
- Prior art date
Links
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
. J .- : , . J .-:,
Изобретение относитс к измере ию напр жений в конструкиионнь1Х материалах, измен ющих свои характеристики со временем , и может быть использовано в машиностроении и в строительстве.The invention relates to the measurement of stresses in structural materials, which change their characteristics with time, and can be used in mechanical engineering and in construction.
Известны спсх;обы .измерени реологических напр жений, заключающиес в том, что смещение .поверхности нагружаемого образца измер ют в направлении воздействи нагрузки в плоскости, касательной к этой поверхности.Known spph; conventional measurements of rheological stresses are that the displacement of the surface of the loaded specimen is measured in the direction of the load in the plane tangential to this surface.
Однако этот способ не обеспечивает высокой разрешающей способности и точностиизмерени , таК как дл измерени исполь. зуютс тензометры с большой базой, захватывающие зоны с существенной неоднородностью напр жений , иногда лаже противоположного знака |j...However, this method does not provide high resolution and accuracy of measurement, as used for measuring. Strain gauges with a large base, exciting zones with substantial non-uniformity of stresses, sometimes even the opposite sign of | j ...
Известен также способ измерени рео (логических напр жений, заключающийс в том, что смещение поверхности нагружаемого образца измер ют по нормали к этой поверхности, и по велич1ше c teщeни суд т о напр жени х 12. Однако этот способ не. There is also known a method for measuring rheo-stresses (logical stresses, which means that the displacement of the surface of the loaded sample is measured along the normal to this surface, and is judged by stress 12 over large quantities. However, this method is not.
обеспечивает высокой точности вследствие малости таких деформаций поверхности.provides high accuracy due to the smallness of such deformations of the surface.
Целью изобретени вл етс повышение точности измерений.The aim of the invention is to improve the measurement accuracy.
Поставленна цель достигаетс тем, что в окрестности контролируемых точек поверхности измен ют величину внутренних напр жении путем изъ ти части материала , образца, например сверлением.This goal is achieved by changing the internal stresses in the vicinity of the controlled points of the surface by removing some of the material, the sample, for example by drilling.
На чертеже изображена деталь 1, в которой измер ют реологические напр жени соответствии с предложенным способом. Дл этого ортогонально к поверхности этой детали в контролируемых точках 2,3,4,5, ,6,7,8 и 9 устанавливают прецизионные измерители линейных перемещений (на чертеже условно не показаны), например пневматические преобразователи типа соплозаслонка .The drawing shows detail 1, in which rheological stresses are measured according to the proposed method. For this, precision linear displacement meters (conventionally not shown in the drawing), for example pneumatic transducers of the nozzle type, are installed at controlled points 2,3,4,5, orthogonal to the surface of this part, 6,7,8 and 9.
: В испытуемой детали 1 сверл т отверстие IP в непосредственной близости от контролируемых точек 2-9. Под действием внутренних напр жений происходит деформаци пс- ерхностного сло детали, котора фиксируетс измерител ми перемеше: In test part 1, an IP hole was drilled in the immediate vicinity of the test points 2-9. Internal stresses cause deformation of the surface layer of the part, which is fixed by mixing
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2042172A SU518615A1 (en) | 1974-07-09 | 1974-07-09 | Method of measuring rheological stresses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2042172A SU518615A1 (en) | 1974-07-09 | 1974-07-09 | Method of measuring rheological stresses |
Publications (1)
Publication Number | Publication Date |
---|---|
SU518615A1 true SU518615A1 (en) | 1976-06-25 |
Family
ID=20590411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2042172A SU518615A1 (en) | 1974-07-09 | 1974-07-09 | Method of measuring rheological stresses |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU518615A1 (en) |
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1974
- 1974-07-09 SU SU2042172A patent/SU518615A1/en active
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