Estimating the Equivalent Initial Crack Size in a Particulate Composite Material Under a Multi-Axial Loading Condition

2002 ◽  
Author(s):  
C. T. Liu ◽  
J. N. Yang ◽  
G. Smith ◽  
D. Wickham
Keyword(s):  
Composite Material ◽  
Loading Condition ◽  
Axial Loading ◽  
Particulate Composite ◽  
Crack Size ◽  
Initial Crack ◽  
Particulate Composite Material

Estimating the Initial Crack Size in a Particulate Composite Material: An Analytical and Experimental Approach

2001 ◽  
Author(s):  
C. T. Liu
Keyword(s):  
Composite Material ◽  
Experimental Approach ◽  
Constant Strain Rate ◽  
Particulate Composite ◽  
Crack Size ◽  
Initial Crack ◽  
Rubber Matrix ◽  
Hard Particles ◽  
Maximum Value ◽  
Particulate Composite Material

Abstract In this study, a technique to predict the equivalent initial crack size (EICS) in a particulate composite material, containing hard particles embedded in a rubber matrix, was developed using constant strain rate crack propagation test data. The accuracy of the developed technique was determined. In addition, the statistical distribution of the equivalent initial crack size follows the second asymptotic distribution of maximum value.

The Application of Fracture Mechanics to Predict the Critical Initial Crack Length for Inspection

2003 ◽  
Author(s):  
C. T. Liu
Keyword(s):  
Composite Material ◽  
Fracture Mechanics ◽  
Crack Length ◽  
Particulate Composite ◽  
Crack Size ◽  
Initial Crack ◽  
Initial Crack Length ◽  
Particulate Composite Material

In this study, a method is developed based on fracture mechanics, for predicting the equivalent critical initial crack size, aic in a particulate composite material. The predicted aic is the crack size that should be used to develop an inspection criterion to determine the reliability of a structure made of the particulate composite material.

Investigating the Constraint Effect in a Particulate Composite Material

2002 ◽  
Author(s):  
C. T. Liu
Keyword(s):  
Composite Material ◽  
Room Temperature ◽  
Constant Strain Rate ◽  
Particulate Composite ◽  
Initial Crack ◽  
Mode I ◽  
Constraint Effect ◽  
Critical Mode ◽  
Hard Particles ◽  
Particulate Composite Material

In this study, the effect of constraint on the critical Mode I stress intensity factor for the onset of crack growth was investigated in a particulate composite material, containing hard particles in a rubbery matrix. Uniaxial specimens with different specimen thicknesses and initial crack lengths were tested under a constant strain rate of 8 cm/cm/min at room temperature. The tested data was analyzed and the results are discussed.

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