Tearing mode interlaminar fracture toughness of composite materials

2001 ◽  
Vol 22 (1) ◽  
pp. 57-64 ◽  
Author(s):  
Shun-Fa Hwang ◽  
Chiao-Lin Hu
Keyword(s):  
Fracture Toughness ◽  
Composite Materials ◽  
Interlaminar Fracture Toughness ◽  
Tearing Mode ◽  
Interlaminar Fracture

The Relation of the Interlaminar Fracture Toughness and the Acoustic Emission (Ae) under the Enf Test

2007 ◽  
Vol 353-358 ◽  
pp. 279-282
Author(s):  
Juho Kwak ◽  
Yu Seong Yun ◽  
Oh Heon Kwon
Keyword(s):  
Fracture Toughness ◽  
Composite Materials ◽  
Laminate Composite ◽  
High Strength ◽  
Light Weight ◽  
Interlaminar Fracture Toughness ◽  
Laminate Composites ◽  
Interlaminar Fracture ◽  
Good Corrosion Resistance ◽  
Enf Test

Recently, composite materials are used in many fields because their properties are high strength, high stiffness, and they have light weight, good corrosion resistance and good thermal conductivity. However, composite materials have relatively a lot of problems, especially delamination, compared with common materials such as a steel and aluminum, etc. Therefore, having the interlaminar fracture toughness for a laminate composite is important. In this study, the end notched flexure (ENF) specimens are employed in order to evaluate modeⅡ interlaminar fracture toughness for CFRP laminate composites. Three kinds of a/L ratio were applied to these specimens under the different pressure level. Also, we discuss the relation of crack growth and the interlaminar fracture toughness in terms of AE characteristics using ENF test.

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