SU930053A1 - Method of material characteristic determination in destruction viscosity testing - Google Patents
Method of material characteristic determination in destruction viscosity testing Download PDFInfo
- Publication number
- SU930053A1 SU930053A1 SU802880705A SU2880705A SU930053A1 SU 930053 A1 SU930053 A1 SU 930053A1 SU 802880705 A SU802880705 A SU 802880705A SU 2880705 A SU2880705 A SU 2880705A SU 930053 A1 SU930053 A1 SU 930053A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- sample
- microdefects
- fracture toughness
- liquid
- determining
- Prior art date
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
(5«) СПОСОБ ОПРЕДЕЛЕНИЯ ХАРАКТЕРИСТИК МАТЕРИАЛА ПРИ ИСПЫТАНИИ НА ВЯЗКОСТЬ РАЗРУШЕНИЯ(5 ") METHOD FOR DETERMINING THE MATERIAL CHARACTERISTICS WHEN TESTING FOR DESTRUCTION VISCOSITY
Изобретение относитс к испытани м материалов и элементов конструкций , в частности к способам определени характеристик материала при испытании на в зкость разрушени .The invention relates to the testing of materials and structural elements, in particular, to methods for determining the characteristics of a material when tested for fracture toughness.
Известен способ определени характеристик материала при испытании на в зкость разрушени , заключающийс в том, что нагружают образец с трещиной, выход щей на его полированную поверхность, регистрируют параметры области распространени пластических деформаций на этой поверхности и по полученным данным суд т о в зкости разрушени .A known method for determining the characteristics of a material when tested for fracture viscosity, which consists in loading a specimen with a crack extending onto its polished surface, records the parameters of the plastic strain area on that surface and from the data obtained determines the fracture viscosity.
В известном способе о размерах пластической зоны суд т по измен е-, нию расположени меток,нанесенных на поверхность до и после нагружени 1 .In the known method, the size of the plastic zone is judged by the change in the position of the labels applied to the surface before and after loading 1.
Недостатком известного способа вл етс длительность количественной обработки результатов эксперимента при определении размеров пластической зоны.The disadvantage of this method is the duration of the quantitative processing of experimental results in determining the size of the plastic zone.
Цель изобретени - сокращение времени определени размеров пластической зоны.The purpose of the invention is to reduce the time for determining the size of the plastic zone.
Указанна цель достигаетс тем, что нагружают образец усилием, составл ющим 50-70 разрушающего усили , разгружает его, полированную поверхность образца покрывают люминесцентной жидкостью, выдерживают образец в течение времени, необходимого дл проникновени жидкости в. полость микродефектов, образовавшихс в процессе пластическихдеформаций образца , удал ют люминесцентную жидкость , определ ют длину радиус-вектора г от вершины трещины до линии , ограничивающей область раскрыти микродефектов, а о в зкости разрушени СУДЯТ по вычисленным значени м параметра К из уравнени This goal is achieved by loading the sample with a force of 50-70 breaking force, unloading it, the polished surface of the sample is covered with a fluorescent liquid, and the sample is held for the time necessary for the liquid to penetrate. the cavity of microdefects formed during plastic deformation of the sample removes the luminescent liquid, determines the length of the radius vector r from the crack tip to the line bounding the opening area of the microdefects, and calculated the values of parameter K from
(1 + sin 1) (1 + sin 1)
.г.g
(1) тсо -(1) tso -
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802880705A SU930053A1 (en) | 1980-02-04 | 1980-02-04 | Method of material characteristic determination in destruction viscosity testing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802880705A SU930053A1 (en) | 1980-02-04 | 1980-02-04 | Method of material characteristic determination in destruction viscosity testing |
Publications (1)
Publication Number | Publication Date |
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SU930053A1 true SU930053A1 (en) | 1982-05-23 |
Family
ID=20876923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802880705A SU930053A1 (en) | 1980-02-04 | 1980-02-04 | Method of material characteristic determination in destruction viscosity testing |
Country Status (1)
Country | Link |
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SU (1) | SU930053A1 (en) |
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1980
- 1980-02-04 SU SU802880705A patent/SU930053A1/en active
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