SU1567876A1 - Method of determining disturbance of continuity of polymeric material in mechanical loading - Google Patents

Method of determining disturbance of continuity of polymeric material in mechanical loading Download PDF

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Publication number
SU1567876A1
SU1567876A1 SU884460336A SU4460336A SU1567876A1 SU 1567876 A1 SU1567876 A1 SU 1567876A1 SU 884460336 A SU884460336 A SU 884460336A SU 4460336 A SU4460336 A SU 4460336A SU 1567876 A1 SU1567876 A1 SU 1567876A1
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SU
USSR - Soviet Union
Prior art keywords
discontinuity
radiation
sample
determining
irradiation
Prior art date
Application number
SU884460336A
Other languages
Russian (ru)
Inventor
Михаил Ульянович Белый
Виктор Федорович Гришачев
Михаил Михайлович Двойненко
Георгий Лукич Конончук
Original Assignee
Киевский Государственный Университет Им.Т.Г.Шевченко
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Application filed by Киевский Государственный Университет Им.Т.Г.Шевченко filed Critical Киевский Государственный Университет Им.Т.Г.Шевченко
Priority to SU884460336A priority Critical patent/SU1567876A1/en
Application granted granted Critical
Publication of SU1567876A1 publication Critical patent/SU1567876A1/en

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Abstract

Изобретение относитс  к измерительной технике, а именно к способам определени  нарушени  сплошности полимерных материалов, и может быть использовано дл  оценки прочностных свойств материалов. Цель изобретени  - повышение точности определени  нарушени  сплошности, достигаетс  за счет точного определени  момента нарушени  сплошности путем регистрации только излучени , рассе нного на трещине. Нагруженный образец 5 облучают оптическим излучением от источника 1 излучени . При возникновении в образце трещины излучение отражаетс  от нее и поступает на фотоприемник 3, расположенный относительно образца под углом, равным углу облучени . По вление фототока в фотоприемнике 3 регистрируетс  индикатором 4 и определ ет момент нарушени  сплошности образца. Максимальное отношение сигнал/шум достигаетс  при углах облучени  и регистрации отраженного излучени  в диапазоне 50-85°. 1 з.п.ф-лы, 1 ил.The invention relates to a measurement technique, in particular, to methods for determining the discontinuity of polymeric materials, and can be used to assess the strength properties of materials. The purpose of the invention is to improve the accuracy of determining discontinuity, achieved by accurately determining the moment of discontinuity by registering only the radiation scattered on the crack. The loaded sample 5 is irradiated with optical radiation from the radiation source 1. When a crack appears in the sample, the radiation is reflected from it and enters the photodetector 3 located relative to the sample at an angle equal to the angle of irradiation. The appearance of the photocurrent in the photodetector 3 is recorded by indicator 4 and determines the instant of discontinuity of the sample. The maximum signal-to-noise ratio is achieved at angles of irradiation and registration of reflected radiation in the range of 50-85 °. 1 hp ff, 1 ill.

Description

условий -т- х 1 , у к 1 поэтому сconditions -t- x 1, y to 1 therefore with

1515

Фо, рмула изобретени Fo, rmula invention

ЧVCV

учетом е 1 + у + considering e 1 + y +

имеемwe have

2.h0 22. г 2.h0 22.g

- -у° - п - sin об,- y ° - n - sin about,

Таким образом, интенсивность оптического излучени , отраженна  от трещин , пропорциональнаThus, the intensity of optical radiation reflected from cracks is proportional to

Коб) n - nf - sin2«i х sin06 cos oЈKob) n - nf - sin2 "i x sin06 cos oЈ

X . -- ij...-,X. - ij ...-,

-,jn - -, jn -

С учетом известных дл  полимерных материалов показателей преломлени  иConsidering the refractive indices known for polymeric materials and

Редактор Ю.СередаEditor Y. Sereda

Составитель М.МининCompiled by M. Minin

Техред М.Ходанич Корректор М.Самборска Tehred M. Khodanich M. Samborska Proofreader

Заказ 1315Order 1315

Тираж 491Circulation 491

ВНИИПИ Государственного комитета по изобретени м и открыти м при ГКНТ СССР 113035, Москва, Ж-35, Раушска  наб., д. 4/5VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

Claims (2)

1. Способ определени  нарушени  сплошности полимерного материала при механическом нагружении, заключающийс  в том, что облучают образец оптическим излучением, регистрируют провзаимодействовавшее с материалом излучение и по нему суд т о нарушении сплошности материала, отличаюЩ и и с   тем, что, с целью повышени  точности определени  нарушени  сплошности, регистрацию провзаимодей- ствовавшего с материалом излучени  осуществл ют под углом, равным углу облучени .1. A method for determining the discontinuity of a polymeric material under mechanical loading, which consists in irradiating a sample with optical radiation, registering the radiation interacting with the material, and judging it from the discontinuity of the material, and in order to improve the determination accuracy discontinuities, registration of radiation interacting with the material is carried out at an angle equal to the angle of irradiation. 2. Способ по п.1, отл и чающий с   тем, что угол облучени  выбирают i: диапазоне 50-85°.2. The method according to claim 1, wherein the angle of irradiation is chosen i: a range of 50-85 °. ПодписноеSubscription
SU884460336A 1988-05-17 1988-05-17 Method of determining disturbance of continuity of polymeric material in mechanical loading SU1567876A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU884460336A SU1567876A1 (en) 1988-05-17 1988-05-17 Method of determining disturbance of continuity of polymeric material in mechanical loading

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU884460336A SU1567876A1 (en) 1988-05-17 1988-05-17 Method of determining disturbance of continuity of polymeric material in mechanical loading

Publications (1)

Publication Number Publication Date
SU1567876A1 true SU1567876A1 (en) 1990-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU884460336A SU1567876A1 (en) 1988-05-17 1988-05-17 Method of determining disturbance of continuity of polymeric material in mechanical loading

Country Status (1)

Country Link
SU (1) SU1567876A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Громов В.К. Введение в эллипсо- метрию. Л.: 1986, с.61-62. Авторское свидетельство СССР № 1250924, кл. G 01 N 19/04, 1986. *

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