Abnormal effect of tensile strain on Young’s modulus of inorganic E-glass fibers

Autor: A. K. Rogozinskii, A. A. Berlin, S. S. Evstiforov, S. L. Bazhenov
Rok vydání: 2010
Předmět:
Zdroj: Doklady Physical Chemistry. 433:118-120
ISSN: 1608-3121
0012-5016
DOI: 10.1134/s0012501610070031
Popis: In this work, the effect of stretching on Young's modulus of highstrength Eglass fibers was studied. An abnormal increase in Young's modulus of glass at tensile strain above 0.2% was detected. Such behavior is characteristic of oriented polymers. In elastic materials at small strains, the stress is directly proportional to the elongation and the pro� portionality factor is called Young's modulus. Young's modulus is determined by the interatomic interaction potential, which is anharmonic in crystalline materials and metals. The anharmonicity of the potential leads to a small deviation from Hooke's law as early as at an elastic deformation stage. In crystals and metals, a deviation from Hooke's law always manifests itself as a decrease in Young's modulus with increasing strain.
Databáze: OpenAIRE