Young's modulus of a short fiber reinforced metal matrix composite

Sridhar Canumalla, Grant A. Gordon, Robert N. Pangborn

Research output: Contribution to journalArticle

Abstract

The theoretical predictions of Young's moduli of a discontinuous fiber reinforced metal matrix composite are compared with experimentally measured moduli to examine the appropriateness of different models. To account for possible changes due to composite fabrication, the modulus of globular inclusions of the fibrous material (shot) was measured in situ using an acoustic microscope on fully processed composite samples. Assuming that the shot and fiber possess the same modulus, micromechanical models are used to predict the Young's modulus of the composite. On comparing theoretical predictions with experimental values measured by dynamic resonance and tensile tests, it is found that the models consistently underestimate the Young's modulus of the composite. These results suggest that the Young's modulus of the fiber may in fact be different than that measured for shot.

Original languageEnglish (US)
Pages (from-to)67-75
Number of pages9
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume276
StatePublished - 1994

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Fiber reinforced metals
Elastic moduli
Composite materials
Acoustic microscopes
Fibers
Fabrication

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

Cite this

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abstract = "The theoretical predictions of Young's moduli of a discontinuous fiber reinforced metal matrix composite are compared with experimentally measured moduli to examine the appropriateness of different models. To account for possible changes due to composite fabrication, the modulus of globular inclusions of the fibrous material (shot) was measured in situ using an acoustic microscope on fully processed composite samples. Assuming that the shot and fiber possess the same modulus, micromechanical models are used to predict the Young's modulus of the composite. On comparing theoretical predictions with experimental values measured by dynamic resonance and tensile tests, it is found that the models consistently underestimate the Young's modulus of the composite. These results suggest that the Young's modulus of the fiber may in fact be different than that measured for shot.",
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Young's modulus of a short fiber reinforced metal matrix composite. / Canumalla, Sridhar; Gordon, Grant A.; Pangborn, Robert N.

In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, Vol. 276, 1994, p. 67-75.

Research output: Contribution to journalArticle

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AU - Pangborn, Robert N.

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AB - The theoretical predictions of Young's moduli of a discontinuous fiber reinforced metal matrix composite are compared with experimentally measured moduli to examine the appropriateness of different models. To account for possible changes due to composite fabrication, the modulus of globular inclusions of the fibrous material (shot) was measured in situ using an acoustic microscope on fully processed composite samples. Assuming that the shot and fiber possess the same modulus, micromechanical models are used to predict the Young's modulus of the composite. On comparing theoretical predictions with experimental values measured by dynamic resonance and tensile tests, it is found that the models consistently underestimate the Young's modulus of the composite. These results suggest that the Young's modulus of the fiber may in fact be different than that measured for shot.

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