Quantifying the mode II critical strain energy release rate of borate bioactive glass coatings on Ti6Al4V substrates

Author(s):  
A. Matinmanesh ◽  
Y. Li ◽  
O. Clarkin ◽  
P. Zalzal ◽  
E.H. Schemitsch ◽  
...  
2013 ◽  
Vol 43 (3) ◽  
pp. 87-96
Author(s):  
Victor I. Rizov ◽  
Angel S. Mladensky

Abstract Mode II crack in overhanging bilayered composite beam is investigated. The beam has rectangular cross-section and is made by two unidirectional fiber reinforced composites. The formula for strain energy release rate, G, is obtained by linear elastic fracture mechanics compliance technique. The validity of the expression derived is established by comparison with solution for G in which the internal forces in front and behind the crack tip are used. The influence of the two layers moduli of elasticity ratio on the strain energy release rate is investigated. The dependence among the strain energy release rate and the ratio of the lengths of the overhang beam part and the beam span is also analyzed.


2010 ◽  
Vol 123-125 ◽  
pp. 133-136
Author(s):  
Meng Kao Yeh ◽  
Yun Yu Lai

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.


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