An experimental study of residual fiber strains in Ti-15-3 continuous fiber composites

1995-01-01
Pickard, S.M.
Miracle, D.B.
Majumdar, B.S.
Kendig, K.L.
Rothenflue, L.
Çöker, Demirkan
A simplified experimental technique to determine the axial fiber residual strain in continuously-reinforced metal matrix composites is described. The residual fiber strains in two Ti-15V-3Cr-3Al-3Sn/SiC metal matrix composites have been measured with this technique. Residual fiber strains on the order of 0.2% are measured in the as-processed condition, and the residual stresses approach zero after testing the composite in tension to failure at room temperature. A conceptual description of the effect of tensile testing on the residual stresses is provided. The experimental results are consistent with predictions based on a concentric cylinder iso-strain analysis of thermal strains. Measurement errors result in a residual fiber strain error that is typically less than ±0.05%. Periodic fiber bending induced by cross-weave fibers is also analyzed, and may contribute significantly to measurement errors.

Citation Formats
S. M. Pickard, D. B. Miracle, B. S. Majumdar, K. L. Kendig, L. Rothenflue, and D. Çöker, “An experimental study of residual fiber strains in Ti-15-3 continuous fiber composites,” Acta Metallurgica Et Materialia, vol. 43, no. 8, pp. 3105–3112, 1995, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34658.