SU479401A1 - Piston seal - Google Patents
Piston sealInfo
- Publication number
- SU479401A1 SU479401A1 SU2001554A SU2001554A SU479401A1 SU 479401 A1 SU479401 A1 SU 479401A1 SU 2001554 A SU2001554 A SU 2001554A SU 2001554 A SU2001554 A SU 2001554A SU 479401 A1 SU479401 A1 SU 479401A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- amplitude
- thickness
- acoustic
- pulse
- piston seal
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
1one
Изобретение может быть применено в металлургии и машиностроении дл автоматического бесконтактного контрол толщины различных материалов.The invention can be applied in metallurgy and mechanical engineering for automatic non-contact control of the thickness of various materials.
Известные акустические импульсные способы контрол толщины листовых материалов, основанные на введении через воздух в контролируемый материал импульса акустических колебаний и измерений амплитуды прошедшего через него импульса, недостаточно точны из-за непосто нства акустического контакта.The known acoustic pulse methods for controlling the thickness of sheet materials, based on the introduction of acoustic oscillations through the air into the material being monitored and measurements of the amplitude of the pulse transmitted through it, are not accurate enough because of the instability of the acoustic contact.
Цель изобретени - повышение точности способа контрол .The purpose of the invention is to improve the accuracy of the control method.
Это достигаетс тем, что по предлагаемому способу измер ют амплитуду излученного импульса, определ ют отношение ее к амплитуде прошедшего импульса и по его величине суд т о контролируемой то.гацине.This is achieved by measuring the amplitude of the emitted pulse using the proposed method, determining its ratio to the amplitude of the transmitted pulse and judging by its value about the controlled trace.
На чертеже показаны графики зави-симости отношени амплитуд излученного и прин того ИМПУЛЬСОВ от произведени толщиныS и частоты f акустических колебаний дл различных материалов (1 - медь, 2 - цинк, 3 латунь , 4 - алюминий).The drawing shows graphs of the ratio of the amplitudes of the emitted and received pulses to the product of thickness S and frequency f of acoustic oscillations for various materials (1 - copper, 2 - zinc, 3 brass, 4 - aluminum).
В воздух или газообразную среду, окружающую контролируемый материал.In the air or gaseous environment surrounding the controlled material.
излучают импульсы акустических колебаний по направлению к контролируемой плоскости материала, причем длина волны акустических колебаний в материале значительно превышает его максимальную толщину. Акустический импульс, прошедший листовой материал, принимаетс в воздухе или газообразной среде на противоположной стороне листа и преобразуетс в электрический.импульсный сигнал.emit pulses of acoustic oscillations in the direction of the controlled plane of the material, and the wavelength of acoustic oscillations in the material significantly exceeds its maximum thickness. An acoustic impulse passed through the sheet material is received in air or in a gaseous medium on the opposite side of the sheet and is converted into an electrical pulse signal.
По величине отношени амплитуд АО к А излученного и прин того импульсов можно судить о контролируемой толщине.By the magnitude of the ratio of the amplitudes of the AO to A of the emitted and received pulses, it is possible to judge the thickness being controlled.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2001554A SU479401A1 (en) | 1974-03-14 | 1974-03-14 | Piston seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2001554A SU479401A1 (en) | 1974-03-14 | 1974-03-14 | Piston seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU479401A1 true SU479401A1 (en) | 1975-07-30 |
Family
ID=48227792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2001554A SU479401A1 (en) | 1974-03-14 | 1974-03-14 | Piston seal |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU479401A1 (en) |
-
1974
- 1974-03-14 SU SU2001554A patent/SU479401A1/en active
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