Effect of Surface Roughness and Hardness of Continuum Materials on Interface Shear Strength of Granular Materials

2017 ◽  
Vol 46 (2) ◽  
pp. 20160375
Author(s):  
H. M. Abuel-Naga ◽  
H. A. Shaia ◽  
A. Bouazza
Keyword(s):  
Surface Roughness ◽  
Shear Strength ◽  
Granular Materials ◽  
Interface Shear Strength ◽  
Interface Shear ◽  
Effect Of Surface

Effect of surface roughness of hydroxyapatite—coated titanium on the bone-implant interface shear strength

Biomaterials ◽  
1994 ◽  
Vol 15 (14) ◽  
pp. 1187-1191 ◽  
Author(s):  
K. Hayashi ◽  
T. Inadome ◽  
H. Tsumura ◽  
Y. Nakashima ◽  
Y. Sugioka
Keyword(s):  
Surface Roughness ◽  
Shear Strength ◽  
Interface Shear Strength ◽  
Interface Shear ◽  
Bone Implant ◽  
Effect Of Surface

scholarly journals Skewness and Kurtosis: Important Parameters in the Characterization of Dental Implant Surface Roughness—A Computer Simulation

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Karl Niklas Hansson ◽  
Stig Hansson
Keyword(s):  
Surface Roughness ◽  
Shear Strength ◽  
Roughness Parameter ◽  
Interface Shear Strength ◽  
Interface Shear ◽  
Implant Surface ◽  
Bone Response ◽  
Dental Implant Surface ◽  
Skewness And Kurtosis

The surface roughness affects the bone response to dental implants. A primary aim of the roughness is to increase the bone-implant interface shear strength. Surface roughness is generally characterized by means of surface roughness parameters. It was demonstrated that the normally used parameters cannot discriminate between surfaces expected to give a high interface shear strength from surfaces expected to give a low interface shear strength. It was further demonstrated that the skewness parameter can do this discrimination. A problem with this parameter is that it is sensitive to isolated peaks and valleys. Another roughness parameter which on theoretical grounds can be supposed to give valuable information on the quality of a rough surface is kurtosis. This parameter is also sensitive to isolated peaks and valleys. An implant surface was assumed to have a fairly well-defined and homogenous “semiperiodic” surface roughness upon which isolated peaks were superimposed. In a computerized simulation, it was demonstrated that by using small sampling lengths during measurement, it should be possible to get accurate values of the skewness and kurtosis parameters.

scholarly journals Effect Surface Roughness on Fatigue Crack Propagation Behaviour of Fibre Metal Laminates (FMLs)

2019 ◽  
Vol 16 (2) ◽  
pp. 6588-6604
Author(s):  
A. Purnowidodo ◽  
S. Sofyan Arief ◽  
F. Hilmi Iman
Keyword(s):  
Surface Roughness ◽  
Tensile Strength ◽  
Shear Strength ◽  
Fatigue Life ◽  
Crack Propagation ◽  
Fibre Orientation ◽  
Interface Shear ◽  
Fibre Metal Laminates ◽  
Fibre Metal ◽  
Effect Of Surface

In the present study, the effect of surface roughness of the metal lamina at the interface of fibre metal laminates (FMLs) on the crack propagation behaviours was investigated for different fibre orientation. The FMLs was made by combining the aluminium and the carbon fibre-epoxy composite lamina. The increasing of the aluminium surface roughness at the interface causes the tensile strength to increase for every fibre orientation. The highest tensile strength is 282 and 367 MPa., respectively for fibre orientation 0°/90° and -45°/45° when the surface roughness is 2.89 mm. The increasing surface roughness causes the development of the delamination taking place at the interface is more difficult, and it leads to the shear strength at the interface to increase. Because of this, the tensile strength increases. However, the lifetime is not only influenced by the interface shear strength but also the stress concentration just in front of the crack tip as well as the surface roughness itself leading to the crack to be initiated from the rougher surface. The longest fatigue life is 180 000 cycles in the case of the fibre orientation 0°/90° with the surface roughness of 1.78 mm, and in the case of fibre orientation of -45°/+45° the longest fatigue life is 420 000 cycles when the surface roughness is 0.33 mm. The results of the study show that the surface roughness affects the tensile strength and crack propagation behaviour.

Influence of revision arthroplasty on bone/cement interface shear strength

1987 ◽  
Vol 20 (8) ◽  
pp. 824
Author(s):  
J.E. Bechtold ◽  
Y. Dohmae ◽  
R.E. Sherman ◽  
R.B. Gustilo
Keyword(s):  
Shear Strength ◽  
Bone Cement ◽  
Revision Arthroplasty ◽  
Interface Shear Strength ◽  
Interface Shear ◽  
Cement Interface
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