Fracture Toughness of Composite Laminates and Metallic Materials Using a Modified CNSB Specimen

2009 ◽  
pp. 74-74-15 ◽  
Author(s):  
JP Lucas
Keyword(s):  
Fracture Toughness ◽  
Composite Laminates ◽  
Metallic Materials

Simple Method for Evaluating of Fracture Toughness of Metallic Materials Utilizing Tensile Properties.

1997 ◽  
Vol 63 (611) ◽  
pp. 1437-1441 ◽  
Author(s):  
Naoto SHIRAKI ◽  
Shigeru NAKAYAMA ◽  
Yoshihiro SUGIYAMA ◽  
Katsutoshi ASAMI
Keyword(s):  
Fracture Toughness ◽  
Tensile Properties ◽  
Metallic Materials ◽  
Simple Method

Loading Rate Effect on Translaminar Fracture Toughness of Hybrid Composite Laminate

2000 ◽  
Author(s):  
Paul Moy ◽  
Jerome Tzeng
Keyword(s):  
Fracture Toughness ◽  
Composite Laminates ◽  
Glass Matrix ◽  
Small Volume ◽  
Loading Rate ◽  
Volume Fraction ◽  
Rate Effect ◽  
The Matrix ◽  
Small Volume Fraction ◽  
Matrix Property

Abstract Fracture toughness properties of composite laminates were evaluated at a loading rate commonly observed in ordinance applications. The laminates are composed of IM7 graphite and a small volume fraction of S2 glass plies to form a cross-ply laminate. Fracture toughness appears to be very rate sensitive if the crack growth perpendicular to the plane dominated by glass/matrix property. Experimental data shows a 30–40% increase of fracture toughness for various layup as the loading rate was increase by 1000 times. The specimens examined under microscopic indicates the strengthening might due to different failure mechanism in the matrix. In addition, there is no visible rate effect if the crack propagation is perpendicular to the graphite dominant plane.

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