JPS54135589A - Thermal diffusivity measuring apparatus - Google Patents
Thermal diffusivity measuring apparatusInfo
- Publication number
- JPS54135589A JPS54135589A JP4297678A JP4297678A JPS54135589A JP S54135589 A JPS54135589 A JP S54135589A JP 4297678 A JP4297678 A JP 4297678A JP 4297678 A JP4297678 A JP 4297678A JP S54135589 A JPS54135589 A JP S54135589A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic wave
- absorption layer
- specimen
- layer
- temperature
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To measure the tnermal diffusivity of substances accurately and promptly, by utilizing the proportional relationship between temperature changes by electromagnetic wave radiation to the electromagnetic absorption layer of the layer being measured which forms part of gas-sealed enclosed container wall and the standard specimen and pressure wave amplitudes.
CONSTITUTION: After passing through a chopper 7 and concave mirrors 13, 113, etc. the electromagnetic wave radiates an absorption layer 1b of standard speciemen having excellent absorption factor of electromagnetic wave which is disposed to form part of wall of gas-sealed enclosed containers 2, 102, and a specimen 101 of absorption layer only similar to the specimen of which is superposed a layer being measured 1a of which thickness varies from 5 to 20 μm, or 20 μm to 5 mm depending on the insulating material and the excellent thermal conductive material such as metal. Thus, the absorption layer generates heat to change in the temperature, and the surge wave amplitude generated in proportion to the temperature is detected by microphones 5, 105, and the logarithmic value of the ratio thereof is applied from an arithmetic circuit 10 into X-axis of X-Y recorder 11. On the other hand, the square root of the modulation frequency of electromagnetic wave due to chopper 7 is applied to Y-axis. And the thermal diffusivity may be obtained easily and accurately from the gradient of the recorded curve regardless of the kind of substance.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4297678A JPS54135589A (en) | 1978-04-12 | 1978-04-12 | Thermal diffusivity measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4297678A JPS54135589A (en) | 1978-04-12 | 1978-04-12 | Thermal diffusivity measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54135589A true JPS54135589A (en) | 1979-10-20 |
| JPS6138410B2 JPS6138410B2 (en) | 1986-08-29 |
Family
ID=12651061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4297678A Granted JPS54135589A (en) | 1978-04-12 | 1978-04-12 | Thermal diffusivity measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54135589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008145262A (en) * | 2006-12-11 | 2008-06-26 | Nippon Telegr & Teleph Corp <Ntt> | Component concentration measuring apparatus |
| CN103969061A (en) * | 2013-01-25 | 2014-08-06 | 膳魔师（江苏）家庭制品有限公司 | Temperature judging method of vacuum cup |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63110814U (en) * | 1987-01-08 | 1988-07-16 |
-
1978
- 1978-04-12 JP JP4297678A patent/JPS54135589A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008145262A (en) * | 2006-12-11 | 2008-06-26 | Nippon Telegr & Teleph Corp <Ntt> | Component concentration measuring apparatus |
| CN103969061A (en) * | 2013-01-25 | 2014-08-06 | 膳魔师（江苏）家庭制品有限公司 | Temperature judging method of vacuum cup |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6138410B2 (en) | 1986-08-29 |
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