scholarly journals OS2141 Proposal of Small Scale Yielding Condition in Magnesium Alloy by FEM Analysis of R-curve

2012 ◽  
Vol 2012 (0) ◽  
pp. _OS2141-1_-_OS2141-2_
Author(s):  
Toshiyuki ISHINA ◽  
Shigeru HAMADA ◽  
Hiroshi NOGUCHI
Keyword(s):  
Magnesium Alloy ◽  
Fem Analysis ◽  
Small Scale ◽  
Small Scale Yielding ◽  
Yielding Condition ◽  
Scale Yielding

Fracture Toughness in Ultra Fine-Grained Magnesium Alloy

2006 ◽  
Vol 503-504 ◽  
pp. 155-160 ◽  
Author(s):  
Hidetoshi Somekawa ◽  
Toshiji Mukai
Keyword(s):  
Fracture Toughness ◽  
Grain Size ◽  
Magnesium Alloy ◽  
Small Scale ◽  
Plane Strain Fracture Toughness ◽  
Small Scale Yielding ◽  
Fine Grained ◽  
Yielding Condition ◽  
Strain Fracture ◽  
Scale Yielding

The fracture toughness was investigated using in an extruded AZ31 magnesium alloy with an initial grain size of 1.0 μm. Since the small scale yielding condition was not satisfied with the present thin thickness, the value of plane-strain fracture toughness, KIC = 27.9 MPam1/2, was measured from Stretched Zone analysis. The values of KIC in AZ31 magnesium alloys were dependent on the grain size. The grain refinement was found to be one of the improvement methods for fracture toughness in magnesium alloy.

G031054 Proposal of Small Scale Yielding Condition by FEM Analysis

2013 ◽  
Vol 2013 (0) ◽  
pp. _G031054-1-_G031054-5
Author(s):  
Toshiyuki ISHINA ◽  
Shigeru HAMADA ◽  
Hiroshi NOGUCHI
Keyword(s):  
Fem Analysis ◽  
Small Scale ◽  
Small Scale Yielding ◽  
Yielding Condition ◽  
Scale Yielding

OS1427 Evaluation method of crack growth in reactor piping subjected to seismic loading beyond small scale yielding condition

2013 ◽  
Vol 2013 (0) ◽  
pp. _OS1427-1_-_OS1427-3_
Author(s):  
Yoshihito YAMAGUCHI ◽  
Makoto UDAGAWA ◽  
Yinsheng LI ◽  
Jinya KATSUYAMA ◽  
Kunio ONIZAWA
Keyword(s):  
Crack Growth ◽  
Evaluation Method ◽  
Seismic Loading ◽  
Small Scale ◽  
Small Scale Yielding ◽  
Yielding Condition ◽  
Scale Yielding

Small Scale Contact Conditions for the Linear-Elastic Interface Crack

1988 ◽  
Vol 55 (4) ◽  
pp. 814-817 ◽  
Author(s):  
Peter M. Anderson
Keyword(s):  
Interface Crack ◽  
Growth Parameter ◽  
Small Scale ◽  
Elastic Materials ◽  
Small Scale Yielding ◽  
Contact Conditions ◽  
Linear Elastic ◽  
Elastic Interface ◽  
Scale Yielding ◽  
Anisotropic Elastic

Conditions are discussed for which the contact zone at the tip of a two-dimensional interface crack between anisotropic elastic materials is small. For such “small scale contact” conditions combined with small scale yielding conditions, a stress concentration vector uniquely characterizes the near tip field, and may be used as a crack growth parameter. Representative calculations for an interface crack on a representative Cu grain boundary show small contact conditions to prevail, except possibly under large shearing loads.

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