RU96120618A - 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
RU96120618A
RU96120618A RU96120618/25A RU96120618A RU96120618A RU 96120618 A RU96120618 A RU 96120618A RU 96120618/25 A RU96120618/25 A RU 96120618/25A RU 96120618 A RU96120618 A RU 96120618A RU 96120618 A RU96120618 A RU 96120618A
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RU
Russia
Prior art keywords
thermal
materials
thermophysical characteristics
heat source
test material
Prior art date
Application number
RU96120618/25A
Other languages
Russian (ru)
Other versions
RU2149389C1 (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 RU96120618A priority Critical patent/RU2149389C1/en
Priority claimed from RU96120618A external-priority patent/RU2149389C1/en
Publication of RU96120618A publication Critical patent/RU96120618A/en
Application granted granted Critical
Publication of RU2149389C1 publication Critical patent/RU2149389C1/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 термодатчиками в двух точках контроля, отличающийся тем, что, применяют точечный источник тепла, с помощью которого воздействуют на исследуемый материал так, что в точках расположения термодатчиков добавляют избыточные температуры T1 и T2, а искомые теплофизические характеристики материалов рассчитывают по формулам
Figure 00000001

Figure 00000002

где
Figure 00000003

Figure 00000004

a - коэффициент температуропроводности;
τ - период повторения импульсов;
R1, R2 - расстояние между источником тепла и соответствующими термодатчиками;
T1, T2 - избыточные температуры;
λ - коэффициент теплопроводности;
Q - количество тепла выделяемого точечным источником тепла;
k - порядковый номер следования тепловых импульсов;
nmax - количество тепловых импульсов воздействующих на исследуемый материал до момента установления избыточных температур.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 thermal sensors at two control points, characterized in that a point heat source is used to influence the test material so that add thermal sensors at the points of location excess temperatures T 1 and T 2 , and the desired thermophysical characteristics of the materials are calculated by the formulas
Figure 00000001

Figure 00000002

Where
Figure 00000003

Figure 00000004

a is the thermal diffusivity;
τ is the pulse repetition period;
R 1 , R 2 - the distance between the heat source and the corresponding temperature sensors;
T 1 , T 2 - excess temperatures;
λ is the coefficient of thermal conductivity;
Q is the amount of heat generated by a point heat source;
k is the sequence number of the thermal pulses;
n max - the number of thermal pulses acting on the test material until the establishment of excess temperatures.
RU96120618A 1996-10-08 1996-10-08 Method of nondestructive test of thermophysical characteristics of materials RU2149389C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96120618A RU2149389C1 (en) 1996-10-08 1996-10-08 Method of nondestructive test of thermophysical characteristics of materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96120618A RU2149389C1 (en) 1996-10-08 1996-10-08 Method of nondestructive test of thermophysical characteristics of materials

Publications (2)

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RU96120618A true RU96120618A (en) 1998-12-20
RU2149389C1 RU2149389C1 (en) 2000-05-20

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RU2501002C1 (en) * 2012-07-03 2013-12-10 Открытое акционерное общество "Обнинское научно-производственное предприятие "Технология" Method to determine coefficient of heat conductivity of partially transparent materials

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