SU1640535A1 - Interference method for measuring displacements and deformations - Google Patents
Interference method for measuring displacements and deformations Download PDFInfo
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- SU1640535A1 SU1640535A1 SU894680418A SU4680418A SU1640535A1 SU 1640535 A1 SU1640535 A1 SU 1640535A1 SU 894680418 A SU894680418 A SU 894680418A SU 4680418 A SU4680418 A SU 4680418A SU 1640535 A1 SU1640535 A1 SU 1640535A1
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- fringes
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- determined
- deformations
- interference fringes
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Abstract
Изобретение относитс к измерительной .технике и может быть использовано при исследовани х напр женно-деформированного состо ни объекта когерентно- оптическими методами. Целью изобретени вл етс снижение трудоемкости и повышение точности измерений путем определени дробных пор дков интерференционных полос . Записывают на фоторегистраторе двух- экспозиционную спекл-интерферограмму объекта и восстанавливают с нее пучком полихроматического излучени картину интерференционных полос Пучок фокусируют до по влени на всем изображении объекта интерференционных полос. Перемещают пространственный фильтр до по влени полихроматических интерференционных полос Определ ют последовательность изменени цвета полос, по которой определ ют направлени возрастани пор дков полос, а по цветовым оттенкам полос определ ют их пор дкиThe invention relates to measuring equipment and can be used in studies of the stress-strain state of an object by coherent-optical methods. The aim of the invention is to reduce the labor intensity and increase the accuracy of measurements by determining fractional orders of interference fringes. A two-exposure speckle interferogram of the object is recorded on the photographic recorder and a picture of interference fringes is restored from it by a beam of polychromatic radiation. The beam is focused until the interference fringes appear on the entire image of the object. The spatial filter is moved until the occurrence of polychromatic interference fringes. The sequence of changing the color of the fringes is determined, along which the increasing directions of the fringes of the fringes are determined, and their orders are determined by the color hues of the fringes.
Description
Изобретение относитс к измерительной технике и может быть использовано при исследовани х напр женно-деформированного состо ни объекта,коге;,ентно-оп- тическими методами.The invention relates to a measurement technique and can be used in studies of the stress-strain state of an object by means of optical methods.
Цель изобретени - снижение трудоемкости и повышение точности измерений путем определени дробных пор дков интерференционных полос.The purpose of the invention is to reduce the labor intensity and increase the accuracy of measurements by determining fractional orders of interference fringes.
Способ осуществл ют следующим образом .The method is carried out as follows.
На фоторегистраторе записывают двух- экспозиционную спекл-интерферограмму объекта. Освещают спекл-интерферограмму пучком полихроматического излучени и фокусируют пучок до по влени картины интерференционных полос на всем изображении объекта. Перемещают пространственный фильтр до по влени полихроматическихA two-exposure speckle interferogram of the object is recorded on the photographic recorder. The speckle interferogram is illuminated with a beam of polychromatic radiation and the beam is focused until a pattern of interference fringes appears on the entire image of the object. Move the spatial filter until the appearance of polychromatic
интерференционных полос Определ ют последовательность изменени цвета полос, по которой определ ют направление возрастани пор дков полос По цветовым оттенкам полос определ ют .их пор дки и. использу их, определ ют деформации и перемещени .interference fringes The sequence of changing the color of the fringes is determined, by which the direction of the increasing of the fringes of the fringes is determined. From the color tints of the fringes, their orders and are determined. using them, deformations and displacements are determined.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU894680418A SU1640535A1 (en) | 1989-04-18 | 1989-04-18 | Interference method for measuring displacements and deformations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894680418A SU1640535A1 (en) | 1989-04-18 | 1989-04-18 | Interference method for measuring displacements and deformations |
Publications (1)
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SU1640535A1 true SU1640535A1 (en) | 1991-04-07 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU894680418A SU1640535A1 (en) | 1989-04-18 | 1989-04-18 | Interference method for measuring displacements and deformations |
Country Status (1)
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SU (1) | SU1640535A1 (en) |
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1989
- 1989-04-18 SU SU894680418A patent/SU1640535A1/en active
Non-Patent Citations (1)
Title |
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Джоунс Р., Уайкс К. Голографическа и спекл-интррферометри . М.: Мир, 1986. с 133-135. * |
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