BS 7134-4.2(1990) : 1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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TESTING OF ENGINEERING CERAMICS - THERMO-PHYSICAL PROPERTIES - METHOD FOR THE DETERMINATION OF THERMAL DIFFUSIVITY BY THE LASER FLASH (OR HEAT PULSE) METHOD
Hardcopy , PDF
15-11-1997
English
01-01-1990
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Foreword
Committees responsible
Method
1 Scope
2 Definitions
3 Principle
4 Apparatus
5 Test pieces
6 Calibration
7 Test procedure
8 Results
9 Test report
Appendices
A Mathematical derivation of calculations
B Deviations from ideal behaviour
Tables
1 Values of constant W for a range of transient times
2 Finite pulse time correction constants
Figures
1 Schematic representation of transient at rear face of
test piece
2 Schematic diagram of thermal diffusivity apparatus
3 Schematic diagram of ambient and low temperature test
piece holder
4 Heat loss correction curves
Gives a method for determining thermal diffusivity of engineering ceramics, to an accuracy of approximately plus or minus 5 %. Suitable for the measurement of thermal diffusivity values at temperatures greater than -180 degree C. Covers definitions, principle, apparatus, test pieces, calibration, test procedure, results and test report.
| Committee |
RPM/13
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 4803-3:1983 | Radiation safety of laser products and systems Guidance for users |
| BS 7134-0:1989 | Testing of engineering ceramics Introduction and guide to sampling |
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