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Caiazzo, Anthony A., Materials Sciences Corp, Blue Bell, United States
Sullivan, Brian J., Materials Sciences Corp, Blue Bell, United States
Rosen, B.Walter, Materials Sciences Corp, Blue Bell, United States
Available data from the recoil tests will be reviewed, and the repercussions of this data on the compression strength and failure mechanisms will be assessed. Predictions from micromechanical models accounting for fiber strain-to-failure, inelastic matrix response, and fiber misalignments will be made and compared to measured strengths from coupon tests. It is shown that the classical microfilament buckling mode of composite compression failure apparently does not apply in the case of composites employing high modulus pitch-based fibers. This is due to the fact that 1) fiber strains corresponding to this failure mode are significantly higher than measured compressive strain-to-failure data for these fibers by the fiber recoil test method, and 2) there is good agreement between strengths predicted by fiber compression failure mode and measured strengths from coupon tests.
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תנאי שימוש
Compressive strength and failure mechanisms of pitch-based fiber undirectional composites
Caiazzo, Anthony A., Materials Sciences Corp, Blue Bell, United States
Sullivan, Brian J., Materials Sciences Corp, Blue Bell, United States
Rosen, B.Walter, Materials Sciences Corp, Blue Bell, United States
Compressive strength and failure mechanisms of pitch-based fiber undirectional composites
Available data from the recoil tests will be reviewed, and the repercussions of this data on the compression strength and failure mechanisms will be assessed. Predictions from micromechanical models accounting for fiber strain-to-failure, inelastic matrix response, and fiber misalignments will be made and compared to measured strengths from coupon tests. It is shown that the classical microfilament buckling mode of composite compression failure apparently does not apply in the case of composites employing high modulus pitch-based fibers. This is due to the fact that 1) fiber strains corresponding to this failure mode are significantly higher than measured compressive strain-to-failure data for these fibers by the fiber recoil test method, and 2) there is good agreement between strengths predicted by fiber compression failure mode and measured strengths from coupon tests.
Scientific Publication
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