SU951107A1 - Method of determination of material fatigue resistance under medium thermal effect - Google Patents
Method of determination of material fatigue resistance under medium thermal effect Download PDFInfo
- Publication number
- SU951107A1 SU951107A1 SU802950097A SU2950097A SU951107A1 SU 951107 A1 SU951107 A1 SU 951107A1 SU 802950097 A SU802950097 A SU 802950097A SU 2950097 A SU2950097 A SU 2950097A SU 951107 A1 SU951107 A1 SU 951107A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- samples
- environment
- exposure
- fatigue resistance
- fatigue
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 12
- 230000000694 effects Effects 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims description 3
- 239000006244 Medium Thermal Substances 0.000 title 1
- 239000002131 composite material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 230000003068 static effect Effects 0.000 description 4
- 238000009661 fatigue test Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
менном нагружении до разрушени с записью диаграмм деформировани .under load to failure with recording of warp diagrams.
По результатам статических испытаний дл каждой серии образцов стро т усредненные кривые деформировани в координатах «напр жение-деформаци и по ним графически или статистическими методами с точностью не ниже 5% определ ют пределы пропорциональности (упругости) соответственно . и бср. материала, условно принимаемые за параметр, характеризующий сопротивление материала статическому нагружению.According to the results of static tests for each series of samples, the averaged deformation curves in the "stress-strain" coordinates are constructed and the limits of proportionality (elasticity), respectively, are determined using them graphically or by statistical methods with an accuracy of no less than 5%. and bsr. material, conventionally taken as a parameter characterizing the resistance of a material to static loading.
Усталостные испытани серии образцов провод т только дл образцов в исходном состо нии. По результатам усталостных испытаний стро т кривую усталости и определ ют предел выносливости бисх. материала. Предел выносливости бср. материала после теплового воздействи или воздействи среды рассчитывают по формуле , - 6%. . ср- . Статические и усталостные испытани образцов провод т при идентичностных видах деформации (раст жение, изгиб, кручение или сложное деформированное состо ние).Fatigue testing of a series of samples is carried out only for samples in the initial state. According to the results of fatigue tests, a fatigue curve is constructed and the endurance limit bish is determined. material. Endurance limit bsr. material after thermal exposure or exposure to the environment is calculated by the formula, - 6%. . Wed Static and fatigue tests of samples are carried out with identical types of deformation (stretching, bending, torsion, or a complex deformed state).
Подобное изменение статических и усталостных свойств характерно дл композиционных материалов, где существенную роль играют услови св зи св зующего и наполнител .Such a change in the static and fatigue properties is characteristic of composite materials, where the binding conditions of the binder and filler play a significant role.
Наложение факторов окружающей среды на образцы не должно вызывать коренного изменени структуры материала, например плавлени , рекристаллизации, превыщени температуры стекловани полимера и др.The imposition of environmental factors on the samples should not cause a fundamental change in the structure of the material, such as melting, recrystallization, exceeding the glass transition temperature of the polymer, etc.
Способ позвол ет снизить трудоемкость при определении сопротивлени усталости композиционного материала за счет сокращени количества испытуемых образцов и применим дл оценки вли ни воздействий тепла, коррозионных и активных сред.The method reduces the labor intensity in determining the fatigue resistance of a composite material by reducing the number of test samples and is applicable to assess the effects of heat, corrosive and active media.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802950097A SU951107A1 (en) | 1980-07-04 | 1980-07-04 | Method of determination of material fatigue resistance under medium thermal effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802950097A SU951107A1 (en) | 1980-07-04 | 1980-07-04 | Method of determination of material fatigue resistance under medium thermal effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU951107A1 true SU951107A1 (en) | 1982-08-15 |
Family
ID=20905828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802950097A SU951107A1 (en) | 1980-07-04 | 1980-07-04 | Method of determination of material fatigue resistance under medium thermal effect |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU951107A1 (en) |
-
1980
- 1980-07-04 SU SU802950097A patent/SU951107A1/en active
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