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Title: Effect of adhesive and cohesive forces on the strength of glass-fiber-reinforced plastics with loading times of 10{sup 3}-10{sup 6} sec

Abstract

In recent years, composites have increasingly been used in structures which are subjected to intensive dynamic loads. This has made it necessary to study the strength properties of composites under such loading conditions. A problem which has arisen concurrently is the generalization of established representations of the effect of adhesive-cohesive forces of interaction on strength to the region of short times-to-failure (down to 10{sup {minus}6} sec or less) and, accordingly, high loading rates. These problems are very complicated, not only because of the specific structure of composites and the range of factors which affect their properties and behavior under different conditions, but also because of the increasing difficulties encountered in experimental studies conducted at high loading rates (this also applies to in situ observations). Even for traditional materials (metals, polymers, etc.), these problems have been solved only relatively recently. The present study should probably be regarded then as a first attempt to solve these problems for certain glass-fiber-reinforced plastics. In order to obtain a more complete picture of the changes in strength which take place, along with dynamic tests, the authors conducted tests under quasistatic conditions. Also, in order to determine whether adhesive or cohesive forces were the main factormore » in determining strength in a given situation, they conducted parallel tests of model systems and of specimens composed of just the binder (in the cured state). All of the tests were conducted using a simple loading scheme - in tension along planes parallel to the layers of the glass cloth or the plane of adhesive contact.« less

Authors:
; ;  [1]
  1. A.F. Ioffe Physicotechnical Inst., Leningrad (Russian Federation)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
377027
Resource Type:
Journal Article
Resource Relation:
Journal Name: Mechanics of Composite Materials; Journal Volume: 27; Journal Issue: 6; Other Information: PBD: May 1992; TN: Translated from Mekhanika Kompozitnykh Materialov; No. 6, 990-997(Nov-Dec 1991)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PLASTICS; YIELD STRENGTH; REINFORCED MATERIALS; FIBERGLASS; DYNAMIC LOADS

Citation Formats

Emel`yanov, Yu.A., Nikitin, V.V., and Zabrodina, O.N. Effect of adhesive and cohesive forces on the strength of glass-fiber-reinforced plastics with loading times of 10{sup 3}-10{sup 6} sec. United States: N. p., 1992. Web. doi:10.1007/BF00808072.
Emel`yanov, Yu.A., Nikitin, V.V., & Zabrodina, O.N. Effect of adhesive and cohesive forces on the strength of glass-fiber-reinforced plastics with loading times of 10{sup 3}-10{sup 6} sec. United States. doi:10.1007/BF00808072.
Emel`yanov, Yu.A., Nikitin, V.V., and Zabrodina, O.N. Fri . "Effect of adhesive and cohesive forces on the strength of glass-fiber-reinforced plastics with loading times of 10{sup 3}-10{sup 6} sec". United States. doi:10.1007/BF00808072.
@article{osti_377027,
title = {Effect of adhesive and cohesive forces on the strength of glass-fiber-reinforced plastics with loading times of 10{sup 3}-10{sup 6} sec},
author = {Emel`yanov, Yu.A. and Nikitin, V.V. and Zabrodina, O.N.},
abstractNote = {In recent years, composites have increasingly been used in structures which are subjected to intensive dynamic loads. This has made it necessary to study the strength properties of composites under such loading conditions. A problem which has arisen concurrently is the generalization of established representations of the effect of adhesive-cohesive forces of interaction on strength to the region of short times-to-failure (down to 10{sup {minus}6} sec or less) and, accordingly, high loading rates. These problems are very complicated, not only because of the specific structure of composites and the range of factors which affect their properties and behavior under different conditions, but also because of the increasing difficulties encountered in experimental studies conducted at high loading rates (this also applies to in situ observations). Even for traditional materials (metals, polymers, etc.), these problems have been solved only relatively recently. The present study should probably be regarded then as a first attempt to solve these problems for certain glass-fiber-reinforced plastics. In order to obtain a more complete picture of the changes in strength which take place, along with dynamic tests, the authors conducted tests under quasistatic conditions. Also, in order to determine whether adhesive or cohesive forces were the main factor in determining strength in a given situation, they conducted parallel tests of model systems and of specimens composed of just the binder (in the cured state). All of the tests were conducted using a simple loading scheme - in tension along planes parallel to the layers of the glass cloth or the plane of adhesive contact.},
doi = {10.1007/BF00808072},
journal = {Mechanics of Composite Materials},
number = 6,
volume = 27,
place = {United States},
year = {Fri May 01 00:00:00 EDT 1992},
month = {Fri May 01 00:00:00 EDT 1992}
}