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
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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