SU575476A1 - Ultrasonic method of measuring thickness of surface coatings - Google Patents
Ultrasonic method of measuring thickness of surface coatingsInfo
- Publication number
- SU575476A1 SU575476A1 SU7502193230A SU2193230A SU575476A1 SU 575476 A1 SU575476 A1 SU 575476A1 SU 7502193230 A SU7502193230 A SU 7502193230A SU 2193230 A SU2193230 A SU 2193230A SU 575476 A1 SU575476 A1 SU 575476A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- surface coatings
- ultrasonic method
- measuring thickness
- thickness
- coatings
- Prior art date
Links
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
Изобретение относитс к контрольно-измерительной технике и может быть использовано дл измерени толщины защитных покрытий и упрочненных поверхностных слоев, полученных химикотермической обработкой j деталей.The invention relates to an instrumentation technique and can be used to measure the thickness of protective coatings and hardened surface layers obtained by the chemical heat treatment of j parts.
ИзвЕк;тен способ определени состо ни поверхностных слоев изделий и материалов, заключающийс в том, что в контролируемом ЛИИ возбуждают волны Рэле и используют им- Q пульсный эхо-метод контрол , перед которым измен угол ввода волны в изделие получают максимальную амплитуду возбужденной волны l .The method of determining the state of the surface layers of products and materials is that the controlled LII stimulates the Rehle waves and uses the Q-pulse echo-control method, before which the angle of wave input into the product is changed to get the maximum amplitude of the excited wave l.
Недостатком известного способа вл ет- и с невозможность определени толщины покрытий изделий.The disadvantage of this method is the impossibility of determining the thickness of the coatings of products.
Извес- ен ультразвуковой способ измерени толщины слоев, заключающийс в том, что возбуждают ультразвуковые колебани 20 в исследуемом образце, принимают колебани , прошедшие через neroi анализируют амплитудный спект) эхо-сигналов и по измере ни м пп7)аметр)ов ст1Г1КТ|)а суд т об изме- нгиии толпипии 2,25The ultrasonic method for measuring the thickness of layers was found, which consists in exciting ultrasonic vibrations 20 in the sample under study, taking oscillations passing through neroi, analyzing the amplitude spectrum of the echo signals and measuring them, st7G1CT |) and court t about crowd control 2.25
Однако применение этого способа ограничено низкой чувствительностью аппаратуры к измерению толщины слоев и покрытий, акустическое сопротивление (плотность, скорость звука) которых незначительно отличаетс от акустических сопротивлений материала образца или вл етс функцией толщины (такие случаи возникают при получении упрочненных слоев и покрытий химикотермической обработкой, когда нет ргеэ- кой границы,-отдел ющей поверхностный cлoйJ сложностью электронной аппаратуры устройства, включающей в себ анализатор спектра импульсов.However, the application of this method is limited by the low sensitivity of the apparatus to measuring the thickness of the layers and coatings, the acoustic resistance (density, sound velocity) of which is slightly different from the acoustic resistances of the sample material or is a function of thickness (such cases occur during the preparation of hardened layers and coatings by chemical heat treatment when There is no potential boundary, which separates the surface layer of the complexity of the electronic equipment of the device, including the pulse spectrum analyzer.
Цель изобретени - повыщение точности измерени .The purpose of the invention is to increase the measurement accuracy.
Дл этого по предлагаемому способу возбуждают волну Рэле , по прин тым колеба1ш м суд т о ее наличии, а по углу ввода колебаний в материал -о толщине покрыти .To do this, according to the proposed method, the Relet wave is excited, according to the accepted oscillations, it is judged on its presence, and the angle of entry of oscillations in the material is about the thickness of the coating.
На чертеже изображена функциональна схема устройства, по сн юща предлагаемы способ.The drawing shows a functional diagram of the device, explaining the proposed method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7502193230A SU575476A1 (en) | 1975-11-25 | 1975-11-25 | Ultrasonic method of measuring thickness of surface coatings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7502193230A SU575476A1 (en) | 1975-11-25 | 1975-11-25 | Ultrasonic method of measuring thickness of surface coatings |
Publications (1)
Publication Number | Publication Date |
---|---|
SU575476A1 true SU575476A1 (en) | 1977-10-05 |
Family
ID=20638471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU7502193230A SU575476A1 (en) | 1975-11-25 | 1975-11-25 | Ultrasonic method of measuring thickness of surface coatings |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU575476A1 (en) |
-
1975
- 1975-11-25 SU SU7502193230A patent/SU575476A1/en active
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