MD3820G2 - Process for calibrating the acoustical tensometer - Google Patents
Process for calibrating the acoustical tensometerInfo
- Publication number
- MD3820G2 MD3820G2 MDA20070318A MD20070318A MD3820G2 MD 3820 G2 MD3820 G2 MD 3820G2 MD A20070318 A MDA20070318 A MD A20070318A MD 20070318 A MD20070318 A MD 20070318A MD 3820 G2 MD3820 G2 MD 3820G2
- Authority
- MD
- Moldova
- Prior art keywords
- temperature
- specimen
- tensometer
- acoustical
- modification
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to the material quality nondestructive testing by acoustical methods, particularly to a process for calibrating the acoustical tensometers that can be used for calculating the stress when modifying the temperature of the controlled object, for example of the railway rails.The process for calibrating the acoustical tensometer consists in that there are excited the ultrasonic waves in the specimen of the object, which are propagated in the stressedly-elastic medium, there are measured the informative parameters of said waves and on the basis of the obtained data there are determined the values of stresses occurring in the specimen of the object, depending on which it is carried out calibration of the acoustical tensometer by comparing the indications of the measuring equipment with the indications of the calibrated tensometer. Novelty consists in that it is measured on a fixed basis the time of propagation of the ultrasonic waves and the temperature of the object's specimen, it is modified the temperature of the object's specimen, it is repeatedly measured the mentioned parameters and it is determined the value of the temperature stresses σT, occuring in the object's specimen at different temperatures inside the test interval, according to equation:where:;- the time of propagation of the ultrasonic wave up to the modification of the temperature;- the time of propagation of the ultrasonic wave after the modification of the temperature;ΔT = Ti - T0;- the temperature of the object's specimen up to the modification of the temperature;- the temperature of the object's specimen after the modification of the temperature;- the acoustoelastic rate of ultrasonic wave propagation speed in the object's specimen;- the thermoacoustic rate of ultrasonic wave propagation speed;α - the linear expansion temperature factor;at the same time calibration of the acoustical tensometer is carried out by comparing the calculated value σT with the indications of the controlled tensometer with subsequent correction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070318A MD3820G2 (en) | 2007-11-15 | 2007-11-15 | Process for calibrating the acoustical tensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20070318A MD3820G2 (en) | 2007-11-15 | 2007-11-15 | Process for calibrating the acoustical tensometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD3820F1 MD3820F1 (en) | 2009-01-31 |
| MD3820G2 true MD3820G2 (en) | 2009-08-31 |
Family
ID=40347774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDA20070318A MD3820G2 (en) | 2007-11-15 | 2007-11-15 | Process for calibrating the acoustical tensometer |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD3820G2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD319P2 (en) * | 1995-01-30 | 1996-04-30 | Institutul De Cercetari Stiintifice, Selectie Si Tehnologii Pentru Pomicultura | Variety of walnut-tree Kalarashskii |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2682F2 (en) * | 2002-07-17 | 2005-01-31 | Serghei GHERASIMENCO | Centrifugal pump |
| US20060144146A1 (en) * | 2003-06-23 | 2006-07-06 | Claes Hedberg | Non-destructive testing of materials |
| AU2001296745B2 (en) * | 2000-10-13 | 2006-07-20 | Chicago Bridge & Iron Company | Ultrasonic austenitic weld seam inspection method and apparatus |
| CA2604258A1 (en) * | 2005-04-20 | 2006-10-26 | Sika Technology Ag | Device and method for ultrasonically determining the dynamic elastic modulus of a material |
-
2007
- 2007-11-15 MD MDA20070318A patent/MD3820G2/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001296745B2 (en) * | 2000-10-13 | 2006-07-20 | Chicago Bridge & Iron Company | Ultrasonic austenitic weld seam inspection method and apparatus |
| MD2682F2 (en) * | 2002-07-17 | 2005-01-31 | Serghei GHERASIMENCO | Centrifugal pump |
| US20060144146A1 (en) * | 2003-06-23 | 2006-07-06 | Claes Hedberg | Non-destructive testing of materials |
| CA2604258A1 (en) * | 2005-04-20 | 2006-10-26 | Sika Technology Ag | Device and method for ultrasonically determining the dynamic elastic modulus of a material |
Non-Patent Citations (1)
| Title |
|---|
| Бобренко В.М. и др. Акустическая тензометрия как приложение к УД4-Т HU, журнал «В мире не разрушающего контроля», Санкт-Петербург, сентябрь 2006, № 3 (33), с 49-52 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MD3820F1 (en) | 2009-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG4A | Patent for invention issued | ||
| KA4A | Patent for invention lapsed due to non-payment of fees (with right of restoration) | ||
| MM4A | Patent for invention definitely lapsed due to non-payment of fees |