SU575476A1 - Ultrasonic method of measuring thickness of surface coatings - Google Patents

Ultrasonic method of measuring thickness of surface coatings

Info

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
Application number
SU7502193230A
Other languages
Russian (ru)
Inventor
Станислав Алексеевич Головин
Петр Васильевич Кочетков
Игорь Владимирович Троицкий
Original Assignee
Тульский Политехнический Институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Тульский Политехнический Институт filed Critical Тульский Политехнический Институт
Priority to SU7502193230A priority Critical patent/SU575476A1/en
Application granted granted Critical
Publication of SU575476A1 publication Critical patent/SU575476A1/en

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  • 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.

SU7502193230A 1975-11-25 1975-11-25 Ultrasonic method of measuring thickness of surface coatings SU575476A1 (en)

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)

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