SU894360A1 - Method of determination of residual stress in articles - Google Patents
Method of determination of residual stress in articles Download PDFInfo
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- SU894360A1 SU894360A1 SU802890033A SU2890033A SU894360A1 SU 894360 A1 SU894360 A1 SU 894360A1 SU 802890033 A SU802890033 A SU 802890033A SU 2890033 A SU2890033 A SU 2890033A SU 894360 A1 SU894360 A1 SU 894360A1
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- USSR - Soviet Union
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- determination
- articles
- residual stress
- residual stresses
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
(S) СПОСОБ ОПРЕДЕЛЕНИЯ ОСТАТОЧНЫХ НАПРЯЖЕНИЙ (S) METHOD FOR DETERMINING RESIDUAL STRESSES
1one
Изобретение относитс к неразрушающему контролю изделий, а более конкретно к определению остаточных напр жений углеграфитовых изделий с помощью акустической эмиссии.The invention relates to non-destructive testing of products, and more specifically to the determination of residual stresses of carbon-graphite products using acoustic emission.
Известен способ определени напр жений в издели х, заключающийс в том, что образец нагружают, регистрируют акустическое излучение, определ ют величину напр жений и наличие дефектов fl.The known method of determining stresses in products, which means that the sample is loaded, acoustic radiation is recorded, the magnitude of the stresses and the presence of fl defects are determined.
Недостатком этого способа вл етс трудность определени остаточных напр жений, так как акустическа эмисси возникает только под нагрузкой .The disadvantage of this method is the difficulty of determining residual stresses, since acoustic emission occurs only under load.
Наиболее близким к изобретению rio технической сущности вл етс способ определени остаточных напр жений в издели х, заключающийс в том, что образец нагружают, регистрируют амплитуду , количество и мощность сигна лов акустической эмиссии, фиксируют значени разрушающей и критической В ИЗДЕЛИЯХClosest to the invention, the rio technical entity is a method for determining residual stresses in products, which means that the sample is loaded, the amplitude, quantity and power of acoustic emission signals are recorded, the values of destructive and critical are recorded.
нагрузок, уровень остаточных напр жений в образце и по этим значени м определ ют остаточные напр жени в образце f 2.loads, the level of residual stresses in the sample and from these values determine the residual stresses in the sample f 2.
Недостатком этого способа вл етс низка точность определени остаточных напр жений вследствие большого разброса механических характеристик испытуемых образцов.The disadvantage of this method is the low accuracy of the determination of residual stresses due to the large scatter of the mechanical characteristics of the tested samples.
Цель изобретени - повышение точ10 ности.The purpose of the invention is to improve accuracy.
Эта цель достигаетс за счет того, что дополнительно регистрируют деформационно-прочностные характеристики образца и с учетом этих параметров опреIS дел ют остаточные напр жени по формулеThis goal is achieved due to the fact that the deformation-strength characteristics of the sample are additionally recorded and, taking into account these parameters, residual stresses are determined by the formula
1 - (I+KIС +КзСг) Р2 (1+К|,С, +К4С)1 - (I + KIC + KzSg) P2 (1 + K |, C, + K4C)
2020
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802890033A SU894360A1 (en) | 1980-03-03 | 1980-03-03 | Method of determination of residual stress in articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802890033A SU894360A1 (en) | 1980-03-03 | 1980-03-03 | Method of determination of residual stress in articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU894360A1 true SU894360A1 (en) | 1981-12-30 |
Family
ID=20881000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802890033A SU894360A1 (en) | 1980-03-03 | 1980-03-03 | Method of determination of residual stress in articles |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU894360A1 (en) |
-
1980
- 1980-03-03 SU SU802890033A patent/SU894360A1/en active
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