scholarly journals Fatigue Crack Initiation Behavior in Notched Member of Commercially Pure Titanium.

1991 ◽  
Vol 40 (458) ◽  
pp. 1422-1427 ◽  
Author(s):  
Ken-ichi TAKAO ◽  
Kazuhiro KUSUKAWA
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Commercially Pure

scholarly journals Effect of ARB Processing on Fatigue Crack Closure in Commercially Pure Titanium

2013 ◽  
Vol 54 (4) ◽  
pp. 528-531 ◽  
Author(s):  
Hiromoto Kitahara ◽  
Sho Matsushita ◽  
Masayuki Tsushida ◽  
Shinji Ando
Keyword(s):  
Fatigue Crack ◽  
Crack Closure ◽  
Pure Titanium ◽  
Commercially Pure Titanium ◽  
Fatigue Crack Closure ◽  
Commercially Pure

2310 Fatigue Crack Initiation and Microcrack Growth Behavior of Pure Titanium

2007 ◽  
Vol 2007.1 (0) ◽  
pp. 337-338
Author(s):  
Hideaki NISHIKAWA ◽  
Yasuji ODA ◽  
Hiroshi NOGUCHI
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Pure Titanium ◽  
Growth Behavior ◽  
Microcrack Growth

scholarly journals Forecast of the fatigue crack initiation site of commercially pure Titanium miniature specimens with local surface topography data

2020 ◽  
Vol 321 ◽  
pp. 11008
Author(s):  
L. Böhme ◽  
F. Ströer ◽  
A. Keksel ◽  
J. Seewig ◽  
E. Kerscher
Keyword(s):  
Grain Size ◽  
Crack Initiation ◽  
Surface Topography ◽  
Fatigue Crack Initiation ◽  
Pure Titanium ◽  
Initiation Site ◽  
Commercially Pure Titanium ◽  
Crack Initiation Site ◽  
Average Grain Size ◽  
Cp Ti

Surfaces of technical components rarely appear in perfectly smooth condition. During fatigue loading, stress concentrations at surface asperities cause localized plastic deformation that can lead to crack initiation. Therefore, we have established a computer-aided method based on material ratio curves to investigate the possibility to predict the crack initiation site in fatigue tests by using detailed information on the local surface topography. The present study shows the results of investigations on the mutual influence of the average grain size and the surface condition on the fatigue behavior of commercially pure Titanium (cp-Ti) miniature specimens. Three cp-Ti states were investigated: two types of coarse-grained cp-Ti Grade 2 with 35 µm and with 100 µm average grain size and one ultrafine-grained cp-Ti Grade 4 state with less than 2.5 µm average grain size. Confocal microscopy provided the surface topography data of all specimens and data post-processing was applied to the topography in order to locate critical areas where crack initiation may preferentially occur. These areas were compared with the actual crack initiation areas in fatigue test. Finally, scanning electron microscopy (SEM) images of the fracture surfaces were studied to analyze fatigue crack initiation site and crack path of the three microstructural states.

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