A theoretical analysis of the systematic errors in determining the thermal characteristics of structural materials by a pulse method in a sample of finite dimensions

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Abstract

The problem of the three-dimensional nonstationary temperature field of a sample of material when a thermal pulse of short duration acts on its surface is solved numerically. The scales of the errors in determining the thermal characteristics of the material by a pulse method due to the assumption that heat transfer in the sample is a one-dimensional process, is estimated. The limits of the ranges of possible variation of the ratio of the area of the heated surface of the sample and the zone of thermal heating, which ensure minimum errors in determining the thermal characteristics, are established.

Original languageEnglish
Pages (from-to)384-387
Number of pages4
JournalMeasurement Techniques
Volume52
Issue number4
DOIs
Publication statusPublished - Apr 2009

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Systematic Error
Systematic errors
systematic errors
Theoretical Analysis
pulses
temperature distribution
heat transfer
Temperature Field
Heating
Heat Transfer
Temperature distribution
heating
Heat transfer
Three-dimensional
Hot Temperature
Range of data

Keywords

  • Pulse method
  • Structural materials
  • Thermal characteristics

ASJC Scopus subject areas

  • Applied Mathematics
  • Instrumentation

Cite this

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AB - The problem of the three-dimensional nonstationary temperature field of a sample of material when a thermal pulse of short duration acts on its surface is solved numerically. The scales of the errors in determining the thermal characteristics of the material by a pulse method due to the assumption that heat transfer in the sample is a one-dimensional process, is estimated. The limits of the ranges of possible variation of the ratio of the area of the heated surface of the sample and the zone of thermal heating, which ensure minimum errors in determining the thermal characteristics, are established.

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KW - Thermal characteristics

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