SU144619A1 - Method for measuring sound velocity in solid samples of small thickness - Google Patents
Method for measuring sound velocity in solid samples of small thicknessInfo
- Publication number
- SU144619A1 SU144619A1 SU692318A SU692318A SU144619A1 SU 144619 A1 SU144619 A1 SU 144619A1 SU 692318 A SU692318 A SU 692318A SU 692318 A SU692318 A SU 692318A SU 144619 A1 SU144619 A1 SU 144619A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- small thickness
- sound velocity
- solid samples
- measuring sound
- measuring
- Prior art date
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
Известен способ измерени скорости звука в жидких средах методом электроакустической обратной св зи с предварительной акустической задержкой проход щего через среду сигнала.There is a method of measuring the speed of sound in liquid media by the method of electro-acoustic feedback with a preliminary acoustic delay of the signal passing through the medium.
Известны также резонансные и интерферометрические способы измерени скорости звука в твердых телах.Also known are resonant and interferometric methods for measuring the speed of sound in solids.
В описываемом способе измерени скорости звука в твердых образцах малой толщины применен метод электроакустической обратной св зи с предварительной акустической задержкой сигнала. Это позволило упростить процесс измерений и повысить его надежность.In the described method of measuring the speed of sound in solid samples of small thickness, an electroacoustic feedback method with a preliminary acoustic delay of the signal is applied. This allowed us to simplify the measurement process and increase its reliability.
Скелетна схема устройства по описываемому способу приведена на чертеже.The skeletal scheme of the device according to the described method is shown in the drawing.
Сигнал от импульсного генератора 1 поступает ча излучающий вибратор 2, нагруженный на ультразвуковую линию задержки 3. Между другим концом линии задержки 3 и приемным кварцем 4 расположен исследуемый образец 5. Импульсы с приемного кварца 4 через импульсный усилитель 6 и формирующее устройство 7 подают на гетеродинный волномер 8.The signal from the pulse generator 1 enters a radiating vibrator 2 loaded on an ultrasonic delay line 3. A test sample 5 is located between the other end of the delay line 3 and the receiving quartz 4. eight.
Если из цепи прохождени звука исключить исследуемый образец, то сигнал на входе усилител 6 будет задержан относительно момента его посылки на врем If the sample under study is excluded from the sound transmission circuit, the signal at the input of the amplifier 6 will be delayed relative to the moment of its sending for a time
где Д - длина ультразвуковой линии задержки 3,where D is the length of the ultrasonic delay line 3,
С - скорость распространени ультразвуковых колебаний в материале линии задеджки 3,C is the speed of propagation of ultrasonic vibrations in the material of the release line 3,
т - посто нна времени, обусловленна инерционностью вибратора и усилител .t is the time constant due to the inertia of the vibrator and amplifier.
д т., dt
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU692318A SU144619A1 (en) | 1961-01-05 | 1961-01-05 | Method for measuring sound velocity in solid samples of small thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU692318A SU144619A1 (en) | 1961-01-05 | 1961-01-05 | Method for measuring sound velocity in solid samples of small thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU144619A1 true SU144619A1 (en) | 1961-11-30 |
Family
ID=48300266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU692318A SU144619A1 (en) | 1961-01-05 | 1961-01-05 | Method for measuring sound velocity in solid samples of small thickness |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU144619A1 (en) |
-
1961
- 1961-01-05 SU SU692318A patent/SU144619A1/en active
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