SU408208A1 - - Google Patents
Info
- Publication number
- SU408208A1 SU408208A1 SU1800145A SU1800145A SU408208A1 SU 408208 A1 SU408208 A1 SU 408208A1 SU 1800145 A SU1800145 A SU 1800145A SU 1800145 A SU1800145 A SU 1800145A SU 408208 A1 SU408208 A1 SU 408208A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- time
- propagation
- product
- difference
- sensors
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02863—Electric or magnetic parameters
Description
СПОСОБ КОНТРОЛЯ ЖЕЛЕЗОБЕТОННЫХ ИЗДЕЛИЙ НА ТРЕЩИНОСТОЙКОСТЬMETHOD OF CONTROL OF REINFORCED CONCRETE PRODUCTS FOR CRACKING RESISTANCE
1one
Изобретение относитс к исследованию строительных материалов ультразвуком.This invention relates to the study of ultrasonic construction materials.
Известен способ контрол железобетонных изделий на трещиностойкость, включающий измерение времени распространени ультразвуковых колебаний между парой датчиков в процессе нагружени .There is a known method of testing reinforced concrete products for crack resistance, which includes measuring the time of propagation of ultrasonic vibrations between a pair of sensors during the loading process.
Цель изобретени - снижение трудоемкости испытани и повышение чувствительности измерений .The purpose of the invention is to reduce the complexity of testing and increase the sensitivity of measurements.
Достигаетс это тем, что одновременно измер ют врем распространени ультразвуковых колебаний на двух боковых иоверхност х контролируемого издели и по разности времени распространени колебаний между двум парами датчиков фиксируют по вление трещин.This is achieved by simultaneously measuring the time of propagation of ultrasonic vibrations on two lateral surfaces of the product under test and determining the occurrence of cracks from the difference in the time of propagation of oscillations between two pairs of sensors.
Две пары ультразвуковых датчиков {излучатели и приемники) устанавливают на боковых поверхност х контролируемого сечени издели и нагружают издели . В процессе нагружени измер ют разность во времени распространени колебаний между излучателем и приемником, расположенными на одной боковой поверхности, и излучателем и приемником , расположенными на другой поверхности издели .Two pairs of ultrasonic sensors (emitters and receivers) are installed on the side surfaces of a controlled section of the product and load the product. In the process of loading, the difference in the time of oscillation between the radiator and receiver located on one side surface and the radiator and receiver located on the other surface of the product is measured.
Если при изгибе издели под действием определенной силы трещина не по вл етс ни на одной контролируемой поверхности, то разность во времени будет равна нулю. При возникновении трещины на какой-либо боковой поверхности издели врем распространени колебаний по этой поверхности увеличитс по сравнению с временем распространени колебаний но той поверхности, где трещин нет. Измер ема разность станет отличной от нул .If during the bending of a product under the action of a certain force, a crack does not appear on any of the tested surfaces, then the time difference will be zero. If a crack occurs on any side surface of the product, the propagation time of oscillations along this surface will increase compared with the propagation time of oscillations, but of a surface where there are no cracks. The difference to be measured will be different from zero.
Предмет изобретени Subject invention
Способ контрол железобетонных изделий на трещиностойкость, включающий измерение времени распространени ультразвуковых колебаний между парой датчиков в процессе нагружени , отличающийс тем, что, с целью снижени трудоемкости испытани и повышени чувствительности измерений, одновременно измер ют врем раснространепи ультразвуковых колебаний на двух боковых поверхност х контролируемого издели , и по разности времени раснространени колебаний между двум нарами датчиков фиксируют по вление трещин.The method of testing reinforced concrete products for crack resistance, including measuring the propagation time of ultrasonic vibrations between a pair of sensors during loading, characterized in that, in order to reduce the labor intensity of testing and increase the sensitivity of measurements, simultaneously measure the propagation time of ultrasonic vibrations on two lateral surfaces of the product under test and the difference in the propagation time of oscillations between the two bunks of the sensors record the occurrence of cracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1800145A SU408208A1 (en) | 1972-06-23 | 1972-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1800145A SU408208A1 (en) | 1972-06-23 | 1972-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU408208A1 true SU408208A1 (en) | 1973-12-10 |
Family
ID=20518826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1800145A SU408208A1 (en) | 1972-06-23 | 1972-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU408208A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2765358C1 (en) * | 2021-03-12 | 2022-01-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Вологодский государственный университет" | Method for determining the value of operational load on a reinforced concrete pile in composition of buildings or structures |
-
1972
- 1972-06-23 SU SU1800145A patent/SU408208A1/ru active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2765358C1 (en) * | 2021-03-12 | 2022-01-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Вологодский государственный университет" | Method for determining the value of operational load on a reinforced concrete pile in composition of buildings or structures |
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