FRACTURE TOUGHNESS ANALYSIS AND ESTIMATION OF SURFACE ENERGY OF SEVERAL GLASSES

Author(s):  
Y.M. Jiang ◽  
J.J. Cheng ◽  
W. Zhang ◽  
W.L. Xue
1987 ◽  
Vol 6 (3) ◽  
pp. 260-262 ◽  
Author(s):  
T. R. G. Kutty ◽  
K. N. Chandrasekharan ◽  
J. P. Panakkal ◽  
J. K. Ghosh

2008 ◽  
Vol 15 (05) ◽  
pp. 599-603 ◽  
Author(s):  
JIAN-GANG GUO ◽  
LI-JUN ZHOU ◽  
YA-PU ZHAO

The effective elastic modulus and fracture toughness of the nanofilm were derived with the surface relaxation and the surface energy taken into consideration by means of the interatomic potential of an ideal crystal. The size effects of the effective elastic modulus and fracture toughness were discussed when the thickness of the nanofilm was reduced. And the dependence of the size effects on the surface relaxation and surface energy was also analyzed.


2004 ◽  
Vol 68 (9) ◽  
pp. 787-791 ◽  
Author(s):  
Masaki Tanaka ◽  
Kenji Higashida ◽  
Hideharu Nakashima ◽  
Hidenari Takagi ◽  
Masami Fujiwara

2003 ◽  
Vol 44 (4) ◽  
pp. 681-684 ◽  
Author(s):  
Masaki Tanaka ◽  
Kenji Higashida ◽  
Hideharu Nakashima ◽  
Hidenari Takagi ◽  
Masami Fujiwara

2017 ◽  
Vol 84 (4) ◽  
Author(s):  
Denizhan Yavas ◽  
Ashraf F. Bastawros

The principals of interfacial fracture mechanics and modified Gibbs adsorption equation are utilized to provide a predictive correlation for the macroscopic (effective) fracture toughness of polymer-based adhesive interfaces, exposed to varying level of contaminant concentration. The macroscopic fracture toughness measurement by double cantilever beam test exhibits a progressive deterioration with the increase of the contaminant surface concentration. The associated variation of fracture surface morphology exhibits ductile-to-brittle failure transition, caused by the contamination-induced suppression of plastic deformation within the adhesive layer. The corresponding intrinsic interfacial surface energy is extracted by finite-element simulation, employing surface-based cohesive elements. The modified Gibbs adsorption equation is utilized to correlate the contamination-induced degradation of the interfacial surface energy as a function of contaminant surface concentration. Interfacial fracture mechanics principals are applied to extend the correlation to the macroscopic fracture toughness of the interface. With additional examination of other systems, the proposed correlation may provide the basis for nondestructive evaluation of bond line integrity, exposed to different levels of contaminant.


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