Hole-Size Effects in Pultruded Composites

Authors: Prabhakaran R.; Xu H.

Source: Mechanics of Composite Materials, Volume 37, Number 1, 2 January 2001 , pp. 79-84(6)

Publisher: Springer

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Abstract:

The stress-gradient effects on the fracture strength of materials have been recognized for a long time. In metals, Neuber's elementary block theory has been used to explain why the actual strength reduction due to notches is less than that indicated by the stress-concentration factor. In fiber-reinforced composites, the same concept was renamed as the “hole-size effect,” giving rise to a “point-stress characteristic dimension” and an “average-stress characteristic dimension.”

Keywords: pultruded composites; holes; stress concentration; strain distribution; strength; experiment

Language: English

Document Type: Regular paper

Affiliations: 1: Department of Mechanical Engineering, Old Dominion University, Norfolk, Virginia 23529, USA

Publication date: 2001-01-02