Results 211 to 220 of about 66,614 (249)
Effect of Cutting Edge Truncation on Ground Surface Morphology of Hard and Brittle Materials for Optical Devicesopenaire +1 more source
Tribological Properties and 3D Topographic Parameters of Hard Turned and Ground Surfaces
Materials, 2022 Precision machining of automotive industrial parts is a highlighted topic in mechanical engineering due to the increased need for efficient and high-quality machining processes. This study is aimed to contribute to the field of surface topography evaluation by analyzing tribology-related topography parameters parallelly and finding connections between ...
Viktor Molnár
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Surface Integrity Difference Between Hard Turned and Ground Surfaces and Its Impact on Fatigue Life
CIRP Annals - Manufacturing Technology, 2006Surface integrity is the key for process selection of hard turning or grinding in industry. This study identifies the fundamental differences in the integrity of hard turned and ground surfaces and the subsequent impact on rolling contact fatigue life. The significant findings are: (a) mechanical deformation plays a larger role during hard turning than
Y B Guo, F Hashimoto
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Ground effect over hard rough surfaces
The Journal of the Acoustical Society of America, 1998Laboratory and outdoor measurements are reported of the relative sound pressure level spectrum over hard surfaces containing either random or periodically spaced arrays of 2-D roughnesses. The resulting data have been compared with predictions obtained analytically and with numerical predictions of a boundary element code.
Patrice Boulanger +4 more
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IEEE Transactions on Antennas and Propagation, 2005
A periodic ground plane may be built to either stop the propagation of wave or support a quasi transverse electromagnetic wave along the surface. The former is called a soft surface, and the latter is a hard surface. However, a soft or a hard surface can only be realized in certain frequency and wavenumber regions; therefore, it is important to ...
Yahya Rahmat-Samii
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A periodic ground plane may be built to either stop the propagation of wave or support a quasi transverse electromagnetic wave along the surface. The former is called a soft surface, and the latter is a hard surface. However, a soft or a hard surface can only be realized in certain frequency and wavenumber regions; therefore, it is important to ...
Yahya Rahmat-Samii
exaly +2 more sources
Hard and Soft Surfaces Realized by Frequency Selective Surfaces on a Grounded Dielectric Slab
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005., 2005New designs of hard and soft surfaces realized by dipole and slot frequency selective surfaces (FSS) implemented on a grounded dielectric slab are presented. These structures act as GO or STOP surfaces for transverse electric (TE) and transverse magnetic (TM) polarizations, respectively, depending on the direction of a plane wave excitation. Multi-band
M.A. Hiranandani +2 more
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Roughness of ground and hard-turned surfaces on the basis of 3D parameters
The International Journal of Advanced Manufacturing Technology, 2007Recently, significant technological progress has been accomplished in the field of cutting processes, which still lasts nowadays. Namely, the processes requiring a significant amount of coolant are have been replaced by new processes requiring no coolant or demand minimal cooling.
J. Kundrak, K. Gyani, V. Bana
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Influence of Hard vs. Soft Ground Surfaces on Bone Accretion in Prepubertal Footballers
International Journal of Sports Medicine, 2013Information regarding osteogenic effects of physical activity performed on different playing surfaces is scarce. A total of 42 children (9.2±0.2 years, Tanner stages I-II) participated in this study. 14 were playing on artificial turf soft ground (SG), 14 on a natural non-grass hard ground (HG) and 14 were assigned to the sedentary control group (C ...
Plaza Carmona, María +8 more
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CIRP Journal of Manufacturing Science and Technology, 2010
Abstract The characteristics of residual stress (RS) profiles and their effects on rolling contact fatigue life for precision turned and ground surfaces with a white layer (WL) are very controversial. This study has shown that: (a) Hard turning with a fresh tool generates a “hook” shaped RS profile characterized by surface compressive RS and ...
Y B Guo, F Hashimoto
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Abstract The characteristics of residual stress (RS) profiles and their effects on rolling contact fatigue life for precision turned and ground surfaces with a white layer (WL) are very controversial. This study has shown that: (a) Hard turning with a fresh tool generates a “hook” shaped RS profile characterized by surface compressive RS and ...
Y B Guo, F Hashimoto
exaly +2 more sources
Hard and soft surfaces realized by FSS printed on a grounded dielectric slab
IEEE Antennas and Propagation Society Symposium, 2004., 2004Recently, a lot of research efforts have been devoted to periodic planar surfaces used to generate new equivalent boundary conditions. This work present new solutions for hard and soft surfaces realized by printing a "gangbuster type" frequency selective surface (FSS) on a grounded slab. Depending on the direction of wave propagation and on the nature -
S. Maci, P.-S. Kildal
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