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Photoelastic analysis of interlaminar matrix stresses in fibrous composite models

Through the use of scattered-light photoelastic methods, high-matrix stress magnitudes are observed in multilaminar fibrous composite models

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Abstract

Scattered-light methods are presented for analysis of interlaminar matrix stresses between the fiber layers of composite models. These include data-smoothing techniques and a least-squares solution to utilize the excess information available. Applications are given to determine all stress components in the matrix of a two-layer model and to determine the interlaminar shear stress in the matrix of a four-layer model. The results indicate that matrix stress magnitudes are a function of proximity to the fibers and that they are significantly higher than composite stresses obtained using mathematical models.

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Authors and Affiliations

  1. School of Engineering Science and Mechanics, Georgia Institute of Technology, 30332, Atlanta, GA

    D. G. Berghaus (Associate Professor)

  2. Department of Building Construction, University of Florida, 32601, Gainesville, FL

    R. W. Aderholdt (Assistant Professor)

Authors
  1. D. G. Berghaus
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  2. R. W. Aderholdt
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Berghaus, D.G., Aderholdt, R.W. Photoelastic analysis of interlaminar matrix stresses in fibrous composite models. Experimental Mechanics 15, 409–417 (1975). https://doi.org/10.1007/BF02410338

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  • DOI: https://doi.org/10.1007/BF02410338

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