SU890132A1 - Material specimen creeping characteristic determination method - Google Patents
Material specimen creeping characteristic determination method Download PDFInfo
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- SU890132A1 SU890132A1 SU802883044A SU2883044A SU890132A1 SU 890132 A1 SU890132 A1 SU 890132A1 SU 802883044 A SU802883044 A SU 802883044A SU 2883044 A SU2883044 A SU 2883044A SU 890132 A1 SU890132 A1 SU 890132A1
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- SU
- USSR - Soviet Union
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- sample
- creep
- compression
- tests
- stress
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Изобретение относитс к испытательной технике, в частности к способам определени характеристик ползучести . Известен способ определени характеристик ползучести образцов материалов , заключающийс в том, что образец раст гивают при различных уровн х посто нного напр жени и стро т диаграмму деформировани , по которой суд т о характеристиках ползучести м териала образца 1 i . Недостатком способе вл етс мала информаци , получаема при испытании , т.е. невозможно получить характеристики ползучести при сжатии на том же образце. Цель изобретений - увеличение объема информации.. Указанна цель достигаетс тем,чт испытани на раст жение чередуют с t испытани ми на сжатие при тех же : уровн х напр жений с вьщержкой образца между испытани ми без нагрузки в течение заданного времени, а о харак теристиках ползучести при раст жении и сжатии суд т соответственно по вто рой точке перегиба и по точке максимума на диаграмме отношение деформаций раст жени и сжати - напр жение Способ осуществл етс следующим образом. Образец испытывают на раст жение и на сжатие, исключив возможность потерн устойчивости при сжатии при посто нной температуре и посто нном уровне напр жени . С целью восстановлени исходной структуры материала проводитс вьщержка образца между испытани ми без нагрузки в течение заданного времени. Затем испытани на раст жение и сжатие повтор ютс при более высоком значении напр жений . По полученным данным стро т диагpat/му отношение деформации раст жени (Ер) к деформации сжати ( - напр жение . О характеристиках ползучести при раст жении и сжатии суд т соответственно по второй точке перегиба и по точке максимума на этой диаг-рамме . Способ определени .характеристик ползучести образцов материалов позвол ет при испытании одного образца получи- ь характеристики ползучести . как при раст жении, так и при сжатии .The invention relates to a testing technique, in particular to methods for determining creep characteristics. A known method for determining the creep characteristics of samples of materials is that the sample is stretched at different levels of constant stress and a deformation diagram is constructed, which is used to judge the creep characteristics of the material of sample 1 i. The disadvantage of the method is the small information obtained during the test, i.e. It is not possible to obtain creep characteristics under compression on the same specimen. The purpose of the inventions is to increase the amount of information. This goal is achieved by alternating tensile tests with t compressive tests under the same: stress levels with specimen discharge between tests without load for a specified time, and about characteristics creep in tension and compression is judged by the second inflection point and by the maximum point on the diagram the ratio of the deformations of the tension and compression - the stress. The method is carried out as follows. The specimen is tested for stretching and compression, eliminating the possibility of loss of stability during compression at a constant temperature and constant stress level. In order to restore the initial structure of the material, the sample is held between tests without load for a specified time. The tensile and compression tests are then repeated at a higher stress value. According to the data obtained, the ratio of tensile strain (Ep) to compressive strain (- stress. The creep characteristics of tensile and compression are judged by the second inflection point and the maximum point on this diagram. The method of determining The creep characteristics of material samples allow one to obtain creep characteristics when testing a single sample, both in tension and in compression.
3 . 89013243 8901324
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802883044A SU890132A1 (en) | 1980-02-11 | 1980-02-11 | Material specimen creeping characteristic determination method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802883044A SU890132A1 (en) | 1980-02-11 | 1980-02-11 | Material specimen creeping characteristic determination method |
Publications (1)
Publication Number | Publication Date |
---|---|
SU890132A1 true SU890132A1 (en) | 1981-12-15 |
Family
ID=20877961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802883044A SU890132A1 (en) | 1980-02-11 | 1980-02-11 | Material specimen creeping characteristic determination method |
Country Status (1)
Country | Link |
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SU (1) | SU890132A1 (en) |
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1980
- 1980-02-11 SU SU802883044A patent/SU890132A1/en active
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