Influence of specimen gage length and loading method on the axial compressive strength of a unidirectional composite material

1991 ◽  
Vol 31 (1) ◽  
pp. 14-20 ◽  
Author(s):  
D. F. Adams ◽  
E. Q. Lewis
Keyword(s):  
Compressive Strength ◽  
Composite Material ◽  
Unidirectional Composite ◽  
Gage Length ◽  
Loading Method ◽  
Axial Compressive Strength ◽  
Unidirectional Composite Material

Nonlinear Viscoelastic Analysis of a Unidirectional Composite Material

1981 ◽  
Vol 48 (4) ◽  
pp. 859-865 ◽  
Author(s):  
B. G. Schaffer ◽  
D. F. Adams
Keyword(s):  
Composite Material ◽  
Unidirectional Composite ◽  
Time Dependent ◽  
Creep Recovery ◽  
Viscoelastic Analysis ◽  
Nonlinear Viscoelastic ◽  
The Matrix ◽  
Single Integral ◽  
Unidirectional Composite Material ◽  
Composite Response

The single-integral nonlinear viscoelastic constitutive equations developed by Schapery from thermodynamic theory have been adapted to analyze the time-dependent response of a unidirectional composite material. This viscoelastic analysis has been combined with an existing time-independent elastoplastic micromechanics analysis, to permit the study of nonlinear time-dependent response of materials loaded beyond their elastic limit. Literature values as well as a brief series of creep-recovery tests on a typical epoxy resin were used to characterize the nonlinear viscoelastic response of the matrix constituent of a composite material. Composite response under transverse loading at various stress levels was then predicted, and the results compared with actual composite creep data.

scholarly journals Comparison of Ultrasonic Methods for Detecting Defects in Unidirectional Composite Material

2021 ◽  
Vol 24 (suppl 2) ◽  
Author(s):  
Vanessa Vieira Gonçalves ◽  
Daniel Marcus Giglioli de Oliveira ◽  
Auteliano Antunes dos Santos Junior
Keyword(s):  
Composite Material ◽  
Unidirectional Composite ◽  
Ultrasonic Methods ◽  
Unidirectional Composite Material
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