Laser Nitriding of Titanium Alloy and Fracture Toughness Measurement of Resulting Surface

2012 ◽  
Vol 445 ◽  
pp. 615-620
Author(s):  
O. Al-Mana ◽  
M.S.J. Hashmi ◽  
Bekir Sami Yilbas
Keyword(s):  
Fracture Toughness ◽  
Titanium Alloy ◽  
Laser Nitriding ◽  
Fracture Toughness Measurement ◽  
Toughness Measurement

Laser Nitriding of Titanium Alloy and Fracture Toughness Measurement of Resulting Surface

2012 ◽  
Vol 445 ◽  
pp. 615-620 ◽  
Author(s):  
O. Al-Mana ◽  
M.S.J. Hashmi ◽  
Bekir Sami Yilbas
Keyword(s):  
Fracture Toughness ◽  
Titanium Alloy ◽  
Surface Region ◽  
Alloy Surface ◽  
Indentation Method ◽  
Laser Nitriding ◽  
Fracture Toughness Measurement ◽  
High Cooling Rates ◽  
Micro Indentation ◽  
Toughness Measurement

In the present study laser nitriding of titanium alloy surface is carried out and fracture toughness of the resulting surface is measured using the micro-indentation method. The fracture toughness is then related to the microstructure of the laser treated surface. It is found that laser gas assisted nitriding lowers the fracture toughness of the surface due to the micro-stress formed at the surface region during the high cooling rates.

Fracture toughness measurement of plasma sprayed ceramic coatings

1989 ◽  
Vol 181 (1-2) ◽  
pp. 407-415 ◽  
Author(s):  
F Beltzung ◽  
G Zambelli ◽  
E Lopez ◽  
A.R Nicoll
Keyword(s):  
Fracture Toughness ◽  
Ceramic Coatings ◽  
Fracture Toughness Measurement ◽  
Plasma Sprayed ◽  
Toughness Measurement

Combined Mode Fracture Toughness Measurement by the Disk Test

1978 ◽  
Vol 100 (2) ◽  
pp. 175-182 ◽  
Author(s):  
Hideo Awaji ◽  
Sennosuke Sato
Keyword(s):  
Fracture Toughness ◽  
Internal Crack ◽  
Mode I ◽  
Mode Ii ◽  
Mode Fracture ◽  
Fracture Toughness Measurement ◽  
Circular Specimen ◽  
Combined Mode ◽  
Toughness Measurement ◽  
Disk Test

The disk test in which a circular specimen with an internal crack is subjected to diametral compression is used to investigate combined mode I and mode II fracture. The stress intensity factors in the disk test are calculated numerically by means of the boundary collocation procedure and the dislocation method. Special care was taken to analyze the effect of the compression anvils. This method has the advantage, of allowing successive measurement of mode I, mode II and the combined mode fracture toughness under the same conditions. Some kinds of graphite, plaster and marble are examined to obtain the fracture toughness values, KIC, KIIC and the combined mode fracture criterion.

Sign in / Sign up

Export Citation Format

Share Document