Micromechanisms of Fracture in Toughened Graphite-Epoxy Laminates

2008 ◽  
pp. 95-95-20 ◽  
Author(s):  
WM Jordan ◽  
WL Bradley
Keyword(s):  
Micromechanisms Of Fracture

scholarly journals Micromechanisms of Fracture of Magnesium Based Composite After Superplastic Deformation

2016 ◽  
Vol 16 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Beáta Ballóková ◽  
Katarína Sülleiová ◽  
Michal Besterci ◽  
Oksana Velgosová ◽  
Song-Jeng Huang
Keyword(s):  
Statistical Analysis ◽  
Elevated Temperature ◽  
Strain Rate ◽  
Superplastic Deformation ◽  
Strain Rates ◽  
Significant Growth ◽  
Micromechanisms Of Fracture ◽  
Maximum Value

Abstract The micromechanisms of fracture of AZ61 + 1 wt. % Al2O3 composite in the zone of superplastic deformation was analysed and quantified in this work. The specimens were tested at temperature of 200°C at different strain rates. Changing the strain rate, from 1x10-2 s-1 to 1x10-4 s-1, a significant growth of ductility was observed. At maximum value of superplasticity the fracture was transcrystalline ductile with dimples of two size categories. Based on the statistical analysis of fracture micromechanisms at the elevated temperature and strain rates of 10-0- 1x10-4 s-1 hyperbolic dependency was depicted according to Gurland - Plateau theory.

Micromechanisms of fracture from acoustic emission

2011 ◽  
Vol 48 (4) ◽  
pp. 666-673 ◽  
Author(s):  
C.-S. Kao ◽  
F.C.S. Carvalho ◽  
J.F. Labuz
Keyword(s):  
Acoustic Emission ◽  
Micromechanisms Of Fracture

scholarly journals INFLUENCE OF TEMPERATURE AND STRAIN RATE ON SUPERPLASTICITY KINETICS OF COMPOSITE AZ61-F MAGNESIUM MATERIALS

2018 ◽  
Vol 24 (3) ◽  
pp. 200
Author(s):  
Michal Besterci ◽  
Song-Jeng Huang ◽  
Katarína Sülleiová ◽  
Beáta Ballóková
Keyword(s):  
Plastic Deformation ◽  
Strain Rate ◽  
Superplastic Deformation ◽  
Strain Rates ◽  
Maximum Strain ◽  
Influence Of Temperature ◽  
Angular Pressing ◽  
Micromechanisms Of Fracture ◽  
The Mean ◽  
Kinetics Of

Micromechanisms of fracture of AZ61-F composites in the zone of quasi-superplastic deformation were analyzed and quantified in this work. Deformation of AZ61-F magnesium alloys with 1 wt.% of Al<sub>2</sub>O<sub>3</sub> phase was tested at a temperature of 473 K and different strain rates. It was shown that at the temperature of 473 K and the highest strain rate applied from 1<em>× </em>10<em><sup>−</sup></em><sup>2</sup> to 1 <em>× </em>10<em><sup>−</sup></em><sup>4</sup> s<em><sup>−</sup></em><sup>1</sup>, a significant growth of ductility was observed. The mean dimples diameter of the ductile fracture decreased with the decreasing strain rate. The grain size of 0.7 μm was reached by severe plastic deformation using equal channel angular pressing (ECAP). Secondary Mg<sub>17</sub>Al<sub>12</sub> and Al<sub>2</sub>O<sub>3</sub> phases were identified. The maximum strain was reached at the temperature of 473 K and strain rate of 1 <em>× </em>10<em><sup>−</sup></em><sup>4</sup> s<em><sup>−</sup></em><sup>1</sup>.

scholarly journals Influence of Dynamic Effects Associated with the Breaking and Delamination of Fibers in Composites, and Interaction of the Micromechanisms of Fracture

2015 ◽  
Vol 9 ◽  
pp. 599-603
Author(s):  
Pedro A. Tamayo-Meza ◽  
Anatoli S. Ovchinsky ◽  
Alejandro Leyva-Diaz ◽  
Josué O. Trejo-Escandón ◽  
Juan M. Sandoval-Pineda ◽  
...  
Keyword(s):  
Dynamic Effects ◽  
Micromechanisms Of Fracture
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