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Response of glass-fiber-reinforced epoxy specimens to high rates of tensile loading

Investigation is aimed at establishing experimentally the mechanical properties, the ultimate load, the average strain corresponding to the ultimate load and the mode of failure of glass-fiber-reinforced epoxy plates subjected to high rates of tensile loading in the direction of the fibers

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Abstract

The object of this investigation is to establish experimentally the mechanical properties, and the mode of failure of glass-fiber-reinforced epoxy plates subjected to high rates of strain (30,000 in./in./min), in the direction of the fibers, on a specially designed impact-loading machine propelled by explosives. The results are correlated with those obtained by testing glass-fiber-reinforced epoxy plates subjected to various low rates of strain (0.0265 in./in./min, 0.66 in./in./min and 26.5 in./in./min).

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Abbreviations

e :

strain

ė:

strain rate

e cr :

critical strain

e f :

strain in the fibers

e u :

average strain corresponding to the ultimate load

c :

velocity of propagation of longitudinal elastic waves in the composite

E f , E m :

modulus of the individual fibers and the matrix, respectively

E=E f /E m :

modulus ratio

f :

frequency

T :

temperature

t :

time

t f :

average time to failure

v :

head speed

v cr :

critical head speed

v lim :

limit head speed

V f , V m :

ratio of the volume of the fibers and the matrix to the total volume of the composite, respectively

ρ f ,ρ m :

density of the fibers and the matrix, respectively

σ u :

ultimate stress

References

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Authors and Affiliations

  1. Polytechnic Institute of Brooklyn, 11201, Brooklyn, N. Y.

    A. E. Armenàkas (Professor of Applied Mechanics)

  2. Illinois Institute of Technology, 60616, Chicago, Ill.

    C. A. Sciammarella (Professor of Applied Mechanics)

Authors
  1. A. E. Armenàkas
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  2. C. A. Sciammarella
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Armenàkas, A.E., Sciammarella, C.A. Response of glass-fiber-reinforced epoxy specimens to high rates of tensile loading. Experimental Mechanics 13, 433–440 (1973). https://doi.org/10.1007/BF02324887

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  • DOI: https://doi.org/10.1007/BF02324887

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