Polymer Mechanics

, Volume 13, Issue 1, pp 52–58 | Cite as

Distribution of shearing stresses under three-point flexure in beams made of composite materials

  • Yu. M. Tarnopol'skii
  • I. G. Zhigun
  • V. A. Polyakov
Strength Of Structures


1. When short beams made of composite materials with span-to-height ratios within the 4.0–5.0 range are tested in three-point flexure, the profile of shearing stresses over the height of a beam cross section departs appreciably from a parabolic one over approximately 40% of the span length.

2. The zones of a perturbed state of stress, which appear in short beams tested in three-point flexure, render this method unusable for determining the interlayer shear strength of composite materials on "ultrashort" specimens.


Shear Stress Composite Material Shear Strength Span Length Beam Cross Section 
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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • Yu. M. Tarnopol'skii
  • I. G. Zhigun
  • V. A. Polyakov

There are no affiliations available

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