scholarly journals Fracture toughness and critical strain energy release rate of dental amalgam

1978 ◽  
Vol 13 (5) ◽  
pp. 965-971 ◽  
Author(s):  
J. C. Roberts ◽  
J. M. Powers ◽  
R. G. Craig
Keyword(s):  
Fracture Toughness ◽  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Strain Energy ◽  
Critical Strain ◽  
Strain Energy Release Rate ◽  
Strain Energy Release ◽  
Dental Amalgam

Interfacial Property between Graphite/Epoxy Laminate and MWNTs/Polymer Nanocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 133-136
Author(s):  
Meng Kao Yeh ◽  
Yun Yu Lai
Keyword(s):  
Energy Release Rate ◽  
Energy Release ◽  
Polymer Nanocomposites ◽  
Release Rate ◽  
Strain Energy ◽  
Critical Strain ◽  
Strain Energy Release Rate ◽  
Strain Energy Release ◽  
Bending Test ◽  
Interfacial Property

The interfacial property between graphite/epoxy laminate and multi-walled carbon nanotubes (MWNTs)/polymer nanocomposites was investigated. For the graphite/epoxy laminate, the fiber orientations were varied. For the MWNTs/polymer nanocomposites, the epoxy resins were used as the matrix material and the MWNTs were used as the reinforcement. The weight percentage of MWNTs in the MWNTs/polymer nanocomposites beam specimen was varied. The graphite/epoxy laminate and the MWNTs/polymer nanocomposite beam were glued together by epoxy to make the test specimens. To determine the interfacial property, the end notch flexure (ENF) method was used, and the specimen was placed in a three-point bending test to evaluate the critical strain energy release rate Gc. In analysis, the finite element method was used to obtain the numerical values of the critical strain energy release rate Gc and compared with the experimental ones.

Effect of Starter Defect to GIIC of Unidirectional CFRP Composite

2014 ◽  
Vol 493 ◽  
pp. 773-776
Author(s):  
Fethma M. Nor ◽  
H.Y. Lee ◽  
J.Y. Lim ◽  
M.N. Tamin ◽  
Denni Kurniawan
Keyword(s):  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Strain Energy ◽  
Critical Strain ◽  
Strain Energy Release Rate ◽  
Strain Energy Release ◽  
Shear Mode ◽  
Cfrp Composites ◽  
Cfrp Composite

Critical strain energy release rate in CFRP composites characterizes the delamination resistance. More study is still needed to measure the critical strain energy release rate in sliding shear mode (GIIC) considering various factors that influence its measurement. This study evaluates one of the influencing factors, the starter defect. Two types of on thin, unidirectional CFRP composites with one having thin film insert as starter defect and another one with pre-crack under Mode II loading were prepared and tested in three point bending end notch flexure (3ENF) test. It was found that the (GIIC) of the former was more than twice higher than that of the latter, supposedly due to the presence of resin rich region in the former.

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