Thermal properties of honeycomb panels - analysis of transient experiments with one-dimensional models

Research output: Contribution to journalConference article

Abstract

This work is motivated by the need for thermal properties in order to perform thermal stress analysis of aircraft structural members. For the particular titanium-core honeycomb panels of interest, the effective conductivity was previously underpredicted by established theory compared to a steady experiment. In the present study the thermal properties panel were measured by transient heating experiments. The transient data is analyzed with a parameter estimation method, in which a non-linear regression is carried out between the experimental data and a transient finite-difference model of the heat transfer in the honeycomb panel. A lumped-parameter analytical model is also discussed. The experimental results show that effective thermal conductivity agrees with the previous steady measurement, which indicates that additional work is needed to understand why the steady predictive method underestimates the effective conductivity of this type of honeycomb panel.

Original languageEnglish (US)
Pages (from-to)83-93
Number of pages11
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume361-5
StatePublished - Dec 1 1998
EventProceedings of the 1998 ASME International Mechanical Engineering Congress and Exposition - Anaheim, CA, USA
Duration: Nov 15 1998Nov 20 1998

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Thermodynamic properties
Structural members
Experiments
Titanium
Stress analysis
Thermal stress
Parameter estimation
Analytical models
Thermal conductivity
Aircraft
Heat transfer
Heating

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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title = "Thermal properties of honeycomb panels - analysis of transient experiments with one-dimensional models",
abstract = "This work is motivated by the need for thermal properties in order to perform thermal stress analysis of aircraft structural members. For the particular titanium-core honeycomb panels of interest, the effective conductivity was previously underpredicted by established theory compared to a steady experiment. In the present study the thermal properties panel were measured by transient heating experiments. The transient data is analyzed with a parameter estimation method, in which a non-linear regression is carried out between the experimental data and a transient finite-difference model of the heat transfer in the honeycomb panel. A lumped-parameter analytical model is also discussed. The experimental results show that effective thermal conductivity agrees with the previous steady measurement, which indicates that additional work is needed to understand why the steady predictive method underestimates the effective conductivity of this type of honeycomb panel.",
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