Quantitative Evaluation for Influence of Complex Surface Texture on Fatigue Limit Reliability from Mesocharacteristics. 1st Report. Stress Analysis of Infinite Plate with Complex Surface Profile.

Surface texture generation in machining processes is examined in view of establishing a model building procedure capable of linking surface finish parameters to machining conditions. In the first part of the paper, with reference to cutting processes with defined tool geometry, a model capable of describing a surface profile as an ordered sequence of tool marks is developed. The use of such a model for process control is also discussed. In the second part, the identification procedure of a model describing profile generation in face milling versus cutting parameters is presented.

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An analysis of surface profile for cylindrical osteochondral grafts of the knee quantitative evaluation using a three-dimensional laser scanner

Knee Surgery Sports Traumatology Arthroscopy ◽

10.1007/s00167-012-2106-3 ◽

2012 ◽

Vol 21 (8) ◽

pp. 1794-1800 ◽

Cited By ~ 3

Author(s):

Daisuke Araki ◽

Ryosuke Kuroda ◽

Tomoyuki Matsumoto ◽

Kouki Nagamune ◽

Takehiko Matsushita ◽

...

Keyword(s):

Quantitative Evaluation ◽

Three Dimensional ◽

Laser Scanner ◽

Surface Profile ◽

Osteochondral Grafts

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Surface Crack Initiation Under Contact Fatigue: Experimental Observation and Contact Analysis

Journal of Tribology ◽

10.1115/1.2921690 ◽

1993 ◽

Vol 115 (4) ◽

pp. 658-665 ◽

Cited By ~ 21

Author(s):

W. Cheng ◽

H. S. Cheng ◽

L. M. Keer ◽

X. Ai

Keyword(s):

Crack Initiation ◽

Plastic Zone ◽

Stress Analysis ◽

Surface Crack ◽

Contact Fatigue ◽

Surface Profile ◽

Elastohydrodynamic Lubrication ◽

Contact Analysis ◽

Hertzian Contact ◽

Surface Crack Initiation

An experimental study of surface crack initiation was performed by means of a transverse furrow manufactured by the electric discharge machining (EDM) method. Since there is no built-up edge and plastic zone associated with an EDM furrow, the associated stress analysis is relatively simple and provides a reliable means of comparison with experiment. The test results showed that the crack initiation life was not sensitive to the size of the furrow. This phenomenon was explained by means of a micro-elastohydrodynamic lubrication (MEHL) analysis. The calculated results indicated that the pressure peak, Pmax, near the furrow was not sensitive to the depth and width of the furrow, and Pmax could be estimated from the Hertzian contact pressure P0. The more heavily loaded tests showed a newly deformed plastic zone (bump) near the furrow. Two methods were used for the contact simulation. The elastic-plastic contact analysis was selected for the case when a bump was present; otherwise, the MEHL analysis was used. The stress analysis illustrates that the value and the location of the maximum Mises stress was influenced by the friction coefficient and the geometry of the deformed surface profile.

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