RU96120614A - METHOD FOR NON-DESTRUCTIVE CONTROL OF THERMOPHYSICAL CHARACTERISTICS OF MATERIALS - Google Patents

METHOD FOR NON-DESTRUCTIVE CONTROL OF THERMOPHYSICAL CHARACTERISTICS OF MATERIALS

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Publication number
RU96120614A
RU96120614A RU96120614/25A RU96120614A RU96120614A RU 96120614 A RU96120614 A RU 96120614A RU 96120614/25 A RU96120614/25 A RU 96120614/25A RU 96120614 A RU96120614 A RU 96120614A RU 96120614 A RU96120614 A RU 96120614A
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RU
Russia
Prior art keywords
materials
temperature
test material
point
heat sources
Prior art date
Application number
RU96120614/25A
Other languages
Russian (ru)
Other versions
RU2150695C1 (en
Inventor
И.Н. Ищук
А.И. Фесенко
Original Assignee
И.Н. Ищук
А.И. Фесенко
Filing date
Publication date
Application filed by И.Н. Ищук, А.И. Фесенко filed Critical И.Н. Ищук
Priority to RU96120614A priority Critical patent/RU2150695C1/en
Priority claimed from RU96120614A external-priority patent/RU2150695C1/en
Publication of RU96120614A publication Critical patent/RU96120614A/en
Application granted granted Critical
Publication of RU2150695C1 publication Critical patent/RU2150695C1/en

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Claims (1)

Способ неразрушающего контроля теплофизических характеристик материалов, заключающийся в использовании импульсного нагрева поверхности теплоизолированного исследуемого материала и измерении температуры термодатчиком в одной точке контроля, отличающийся тем, что применяют два точечных источника тепла, с помощью первого источника воздействуют на исследуемый материал так, что в точке расположения достигают первую избыточную температуру, затем с помощью первого и второго источников тепла воздействуют на исследуемый материал и достигают вторую избыточную температуру, а искомые теплофизические характеристики материалов рассчитывают по формулам
Figure 00000001

Figure 00000002

где
Figure 00000003

Q - количество тепла выделяемого точечным источником тепла;
τ - период повторения импульсов;
a - коэффициент температуропроводности;
λ - коэффициент теплопроводности;
R1, R2 - расстояние между источниками тепла и термодатчиком;
T1, T2 - избыточные температуры.A method of non-destructive testing of the thermophysical characteristics of materials, which consists in using pulsed heating of the surface of a thermally insulated test material and measuring the temperature with a thermal sensor at one control point, characterized in that two point heat sources are used, with the help of the first source they act on the test material so that at the location point they reach the first excess temperature, then with the help of the first and second heat sources act on the test material and reach ayut second sacrificial temperature, and the desired thermal characteristics of the materials is calculated by the formulas
Figure 00000001

Figure 00000002

Where
Figure 00000003

Q is the amount of heat generated by a point heat source;
τ is the pulse repetition period;
a is the thermal diffusivity;
λ is the coefficient of thermal conductivity;
R 1 , R 2 - the distance between the heat sources and the temperature sensor;
T 1 , T 2 - excess temperatures.
RU96120614A 1996-10-08 1996-10-08 Process of nondestructive test of thermophysical characteristics of materials RU2150695C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96120614A RU2150695C1 (en) 1996-10-08 1996-10-08 Process of nondestructive test of thermophysical characteristics of materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96120614A RU2150695C1 (en) 1996-10-08 1996-10-08 Process of nondestructive test of thermophysical characteristics of materials

Publications (2)

Publication Number Publication Date
RU96120614A true RU96120614A (en) 1998-12-20
RU2150695C1 RU2150695C1 (en) 2000-06-10

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RU96120614A RU2150695C1 (en) 1996-10-08 1996-10-08 Process of nondestructive test of thermophysical characteristics of materials

Country Status (1)

Country Link
RU (1) RU2150695C1 (en)

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