SU596858A1 - Method of stress relaxation testing of specimens - Google Patents
Method of stress relaxation testing of specimensInfo
- Publication number
- SU596858A1 SU596858A1 SU742076532A SU2076532A SU596858A1 SU 596858 A1 SU596858 A1 SU 596858A1 SU 742076532 A SU742076532 A SU 742076532A SU 2076532 A SU2076532 A SU 2076532A SU 596858 A1 SU596858 A1 SU 596858A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sample
- block
- relaxation
- testing
- stress relaxation
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
КОВ в торцы блока с внутренней стороны и продолжают прикладывать посто нную раст гивающую нагрузку к системе образец-блок.COB in the ends of the block from the inside and continue to apply a constant tensile load to the sample-block system.
На чертеже изображена схема реализации предложенного способа.The drawing shows a diagram of the implementation of the proposed method.
Описываемый способ осуществл ют следующим образом.The described method is carried out as follows.
Образец 1 с двум буртиками 2 и 3 закрепл ют в захватах 4 и 5 разрывной машины. Перед этим коаксиально с образцом устанавливают жесткий цилиндрический ПОЛЫЙ блок б с ввинченной в его торец фиксирующей гайкой 7.Sample 1 with two shoulders 2 and 3 is secured in the grippers 4 and 5 of the breaking machine. Before this, a rigid cylindrical HOLLY block b with a fixing nut 7 screwed into its end is coaxial with the sample.
С целью улучшени центрировани образца в торцовой части блока и на фиксирующей гайке размещают сферические опоры 8 и 9.In order to improve the centering of the sample, spherical supports 8 and 9 are placed in the front part of the block and on the fixing nut.
Образец раст гивают.под посто нной нагрузкой до удлинени , соответствующего заданному напр жению, после чего фиксируют завинчиванием гайки 7 по отношению к блоку так, что буртики 2 и 3 упиргиотс в торцы блока с внутренней стороны. При этом образец не разгружают, а продолжают прикладывать посто нную раст гивающую нагрузку , котора будет передаватьс на блок. Деформаци образца при этом будет только упругой, т .е. начнетс процесс релаксации напр жений.The sample is stretched under a constant load to elongation corresponding to a given voltage, and then fixed by screwing in a nut 7 with respect to the block so that the flanges 2 and 3 are stressed to the ends of the block from the inside. In this case, the sample is not unloaded, but continues to apply a constant tensile load, which will be transmitted to the unit. The deformation of the sample will be only elastic, i .e. the process of stress relaxation begins.
Площадь блока в 40-50 раз больше площади поперечного сечени образца, поэтому блок практически не деформируетс . Энерги деформировани системы образец-блок при этом остаетс посто нной во времен .The block area is 40-50 times the cross-sectional area of the sample, so the block is practically not deformed. The deformation energy of the sample-block system remains constant over time.
Фиксирующую гайку можно перед испытанием настроить на заданное удлинеие образца по тарироврчным графикам уже не дозавинчивать ее в процессе спытани . Это позвол ет при высокотемпературных испытани х не прерывать нагрева на врем нагружени . Релаксационные кривые стро т на основе измеренных в процессе испытани поперечных деформаций образца.Before testing, the fixing nut can be adjusted to the specified elongation of the sample according to the calibration schedules not to be screwed in during the process of testing. This allows for high-temperature tests to not interrupt the heating for the loading time. The relaxation curves are constructed based on the lateral deformations of the specimen measured during the test.
Предложенный способ позвол ет с высокой точностью воспрюизвести при испытании процесс релаксации напр жений в образце.The proposed method makes it possible to accurately reproduce the stress relaxation process in the sample during testing.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742076532A SU596858A1 (en) | 1974-11-19 | 1974-11-19 | Method of stress relaxation testing of specimens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742076532A SU596858A1 (en) | 1974-11-19 | 1974-11-19 | Method of stress relaxation testing of specimens |
Publications (1)
Publication Number | Publication Date |
---|---|
SU596858A1 true SU596858A1 (en) | 1978-03-05 |
Family
ID=20601154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU742076532A SU596858A1 (en) | 1974-11-19 | 1974-11-19 | Method of stress relaxation testing of specimens |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU596858A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431062A (en) * | 1994-05-13 | 1995-07-11 | Baratta; Francis I. | Integral bending moment absorber system for mechanical testing of materials |
-
1974
- 1974-11-19 SU SU742076532A patent/SU596858A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5431062A (en) * | 1994-05-13 | 1995-07-11 | Baratta; Francis I. | Integral bending moment absorber system for mechanical testing of materials |
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