SU938014A1 - Method of measuring layer thickness in multi-layer article - Google Patents
Method of measuring layer thickness in multi-layer article Download PDFInfo
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- SU938014A1 SU938014A1 SU802896089A SU2896089A SU938014A1 SU 938014 A1 SU938014 A1 SU 938014A1 SU 802896089 A SU802896089 A SU 802896089A SU 2896089 A SU2896089 A SU 2896089A SU 938014 A1 SU938014 A1 SU 938014A1
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- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
(З) СПОСОБ ИЗМЕРЕНИЯ ТОЛЩИНЫ СЛОЯ В МНОГОСЛОЙНОМ ИЗДЕЛИИ(3) METHOD OF MEASURING THE THICKNESS OF A LAYER IN A MULTILAYERED PRODUCT
1one
Изобретение относитс к измерительной технике и может быть и пользовано при из14ерении толиины сло в многослойном изделии.The invention relates to a measuring technique and can be used to measure the thickness of a layer in a multilayer product.
Известен способ измерени тол|ф1ны сло , заключающийс в том, что возбуждают ультразвуковые колебани в контролируемом изделии, измер ют разность частот между резонансными частотами и по ней суд т о толщине ю сло , tl ..A known method for measuring the thickness of a layer, which excites ultrasonic oscillations in a controlled product, measures the frequency difference between the resonant frequencies and judges the thickness of the layer, tl.
Недостатком способа вл етс низка , производительность контрол , обусловленна дополнительным измерением резонансной частоты.15The disadvantage of the method is low, the monitoring performance due to the additional measurement of the resonant frequency.
Наиболее близким к изобретению по технической сущности вл етс способ измерени толщины сло в многослойном изделии, заключающийс в том, что возбуждают в изделии ультразвуковые 20 колебани , принимают отраженные сигналы , анализируют параметры амплитуд ого спектра этих сигналов и уч 1кывают их при расчете толщины сло t23.The closest to the invention according to the technical essence is a method for measuring the thickness of a layer in a multilayer product, which consists in exciting ultrasonic oscillations in a product, receiving reflected signals, analyzing the parameters of the amplitude spectrum of these signals and taking them into account when calculating the thickness of the layer t23.
Однако способ имеет ограниченные функциональные возможности, обусловленные отсутствием эхо-сигналов от границ раздела слоев с близкими акустическими параметрами.However, the method has limited functionality due to the lack of echo signals from the interfaces of layers with similar acoustic parameters.
Цель изобретени - расш)рение функциональных возможностей.The purpose of the invention is the expansion of functionality.
Поставленна цель достигаетс тем, что согласно способу измер ют разности частот между ближайшими максимума1«1 коэффициента отражени прин тых сигналов и определ ют толщину сло Из выражени Л The goal is achieved by the method of measuring the frequency difference between the closest maxima and the reflection coefficient of the received signals and determining the thickness of the layer From the expression L
где d, и |i - коэффициенты, определ емые по эталонным образ-цам;where d, and | i are the coefficients determined by reference samples;
- полна толщина измер емой детали; - the thickness of the measured part is full;
Д - разность частот междуD - frequency difference between
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802896089A SU938014A1 (en) | 1980-01-04 | 1980-01-04 | Method of measuring layer thickness in multi-layer article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SU802896089A SU938014A1 (en) | 1980-01-04 | 1980-01-04 | Method of measuring layer thickness in multi-layer article |
Publications (1)
Publication Number | Publication Date |
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SU938014A1 true SU938014A1 (en) | 1982-06-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU802896089A SU938014A1 (en) | 1980-01-04 | 1980-01-04 | Method of measuring layer thickness in multi-layer article |
Country Status (1)
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SU (1) | SU938014A1 (en) |
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1980
- 1980-01-04 SU SU802896089A patent/SU938014A1/en active
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