Behavior of a unidirectional metai-matrix composite under thermomechanical loading

Heoung Jae Chun, Isaac M. Daniel

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The thermoelastoplastic behavior of a unidirectional metal matrix composite (SiCV Al) under thermomechanical loading was studied with a micromechanical model based on the average field theory. The silicon carbide fiber is considered elastic and temperature independent whereas the matrix is thermoviscoplastic and fitted into a series of power law strain hardening models. The thermoelastoplastic analysis of the composite was carried out by introducing the concept of secant properties of the matrix. Analytical predictions were compared with experimental results. Under longitudinal tensile loading the predicted stress-strain cu?ves were in good agreement with experimental curves at three temperatures (24, 288, and 399°C). Under transverse tensile loading the secant properties of the matrix and the average stresses in the matrix and fiber (at room temperature) were obtained as a function of applied stress. The predicted stress-strain curves under transverse loading were in satisfactory agreement with experimental ones at temperatures up to 399°C. Longitudinal and transverse thermal strains as a function of temperature were also predicted and compared favorably with experimental measurements.

Original languageEnglish
Pages (from-to)310-316
Number of pages7
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume118
Issue number3
DOIs
Publication statusPublished - 1996 Jan 1

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composite materials
Composite materials
matrices
Temperature
metal matrix composites
fibers
temperature
strain hardening
curves
silicon carbides
Fibers
Stress-strain curves
Strain hardening
Silicon carbide
Metals
room temperature
predictions

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "The thermoelastoplastic behavior of a unidirectional metal matrix composite (SiCV Al) under thermomechanical loading was studied with a micromechanical model based on the average field theory. The silicon carbide fiber is considered elastic and temperature independent whereas the matrix is thermoviscoplastic and fitted into a series of power law strain hardening models. The thermoelastoplastic analysis of the composite was carried out by introducing the concept of secant properties of the matrix. Analytical predictions were compared with experimental results. Under longitudinal tensile loading the predicted stress-strain cu?ves were in good agreement with experimental curves at three temperatures (24, 288, and 399°C). Under transverse tensile loading the secant properties of the matrix and the average stresses in the matrix and fiber (at room temperature) were obtained as a function of applied stress. The predicted stress-strain curves under transverse loading were in satisfactory agreement with experimental ones at temperatures up to 399°C. Longitudinal and transverse thermal strains as a function of temperature were also predicted and compared favorably with experimental measurements.",
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Behavior of a unidirectional metai-matrix composite under thermomechanical loading. / Chun, Heoung Jae; Daniel, Isaac M.

In: Journal of Engineering Materials and Technology, Transactions of the ASME, Vol. 118, No. 3, 01.01.1996, p. 310-316.

Research output: Contribution to journalArticle

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