GB1374922A - Method and apparatus for measuring the thermal conductivity of a specimen - Google Patents
Method and apparatus for measuring the thermal conductivity of a specimenInfo
- Publication number
- GB1374922A GB1374922A GB341472A GB341472A GB1374922A GB 1374922 A GB1374922 A GB 1374922A GB 341472 A GB341472 A GB 341472A GB 341472 A GB341472 A GB 341472A GB 1374922 A GB1374922 A GB 1374922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- specimen
- thermal conductivity
- measuring
- modulative
- reflectors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
1374922 Measuring the thermal conductivity of a specimen EUROPEAN ATOMIC ENERGY COMMUNITY 25 Jan 1972 [18 Feb 1971] 3414/72 Heading G1A In an apparatus for measuring the thermal conductivity of a specimen 1 supported on tungsten spikes 2 within a gas tight vessel 4, two CO 2 lasers 10 and 11 illuminate ipposite sides of the specimen 1, as shown, with one laser beam being modulated by an adjustable chopper 14 comprising a disc with blades on opposite quadrants such that the modulative frequency is between 0.05 Hz and 10Hz and modulative depth is equal to or less than one half. Two radiation sensors 7 and 8 such as photo-diodes respond to variations in radiation due to temperature modulations and their sinusoidal signal outputs are transmitted to an electronic evaluation system, where the phase shift of one signal relative to the other is determined since this is directly proportional to the thermal conductivity of the specimen. The absolute temperature of the specimen may be measured with the aid of a pyrometer 9. As shown in the Fig. the laser beams are directed into the vessel 4 by reflectors 12 and 13, and these reflectors may be adapted to provide faster scanning of the respective surfaces of the specimen to ensure homogeneous heating of the specimen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU62632 | 1971-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1374922A true GB1374922A (en) | 1974-11-20 |
Family
ID=19726632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB341472A Expired GB1374922A (en) | 1971-02-18 | 1972-01-25 | Method and apparatus for measuring the thermal conductivity of a specimen |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE779075A (en) |
| DE (1) | DE2159783A1 (en) |
| FR (1) | FR2125928A5 (en) |
| GB (1) | GB1374922A (en) |
| IT (1) | IT945661B (en) |
| LU (1) | LU62632A1 (en) |
| NL (1) | NL7117968A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1483566A1 (en) * | 2001-09-05 | 2004-12-08 | Generation Technology Research Pty Ltd | Apparatus for presenting a sample of material for analysis |
| CN109900738A (en) * | 2019-03-29 | 2019-06-18 | 中北大学 | Device and method based on high power laser heating material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317513A1 (en) * | 1983-05-13 | 1984-11-15 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Apparatus for determining the thermal conductivity of a solid material |
| DE3735286A1 (en) * | 1987-10-17 | 1989-04-27 | Rheinische Braunkohlenw Ag | Method for determining the composition of mineral deposits |
| DE102015207551A1 (en) * | 2015-04-24 | 2016-10-27 | Robert Bosch Gmbh | Device and method for photothermal quality control of grain size and layer adhesion of a component |
-
1971
- 1971-02-18 LU LU62632D patent/LU62632A1/xx unknown
- 1971-11-29 DE DE19712159783 patent/DE2159783A1/en active Pending
- 1971-12-27 IT IT5501771A patent/IT945661B/en active
- 1971-12-28 NL NL7117968A patent/NL7117968A/xx unknown
-
1972
- 1972-01-25 GB GB341472A patent/GB1374922A/en not_active Expired
- 1972-02-08 BE BE779075A patent/BE779075A/xx unknown
- 1972-02-15 FR FR7205053A patent/FR2125928A5/fr not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1483566A1 (en) * | 2001-09-05 | 2004-12-08 | Generation Technology Research Pty Ltd | Apparatus for presenting a sample of material for analysis |
| EP1483566A4 (en) * | 2001-09-05 | 2009-04-08 | Xrf Scient Ltd | Apparatus for presenting a sample of material for analysis |
| CN109900738A (en) * | 2019-03-29 | 2019-06-18 | 中北大学 | Device and method based on high power laser heating material |
| CN109900738B (en) * | 2019-03-29 | 2021-05-11 | 中北大学 | Device and method for heating material based on high-power laser |
Also Published As
| Publication number | Publication date |
|---|---|
| BE779075A (en) | 1972-05-30 |
| IT945661B (en) | 1973-05-10 |
| NL7117968A (en) | 1972-08-22 |
| LU62632A1 (en) | 1972-04-05 |
| DE2159783A1 (en) | 1972-08-31 |
| FR2125928A5 (en) | 1972-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |