نتایج جستجو برای: track geometry

تعداد نتایج: 206950  

Journal: :Progress in additive manufacturing 2023

Abstract Laser powder bed fusion of metals (PBF-LB/M) is a process widely used in additive manufacturing (AM). It highly sensitive to its parameters directly determining the quality components. Hence, optimal are needed ensure highest part quality. However, current approaches such as experimental investigation and numerical simulation time-consuming costly, requiring more efficient ways for par...

Journal: :Computers and Geotechnics 2022

Railway tracks undergo plastic settlement when subject to repeated train loading. This occurs differentially along the track rather than in a uniform manner, and profile is key parameter scheduling maintenance operations. Therefore this paper presents novel numerical approach predict irregularity evolution. The model combines empirical laws with finite element theory, where track-ground structu...

Journal: :International journal of radiation biology 2012
Peter Lazarakis Marion U Bug Elisabetta Gargioni Susanna Guatelli Sebastien Incerti Hans Rabus Anatoly B Rosenfeld

PURPOSE With the advent of magnetic resonance imaging (MRI)-guided radiation therapy it is becoming increasingly important to consider the potential influence of a magnetic field on ionising radiation. This paper aims to study the effect of a magnetic field on the track structure of radiation to determine if the biological effectiveness may be altered. METHODS Using the Geant4-DNA (GEometry A...

2012
B. Afra M. D. Rodriguez K. Nordlund T. Bierschenk N. Kirby C. Trautmann P. Kluth

Irradiation of a solid with swift heavy ions can induce structural modifications in a very narrow region around the ion trajectories, so called ion tracks. In quartz, swift heavy ion irradiation leads to a change in the refractive index and offers a means to impose an etch anisotropy in the material, paving the way for nano-fabrication and micromachining of optical devices. Ion tracks in quartz...

Journal: :Journal of Machine Engineering 2023

1. JAFARI D., VANEKER T.H.J., GIBSON I., 2021, Wire and Arc Additive Manufacturing: Opportunities Challenges to Control the Quality Accuracy of Manufactured Parts, Materials & Design, 202, 109471, https://doi.org/10.1016/j.matd.... CrossRef Google Scholar

Journal: :Wear 2021

An analytical model has been developed to study the effect of asperity geometry on abrasive wear behaviour an ellipsoidal sliding through a plastically deforming substrate. The computes penetration depth and profile substrate as function applied load geometry, i.e. asperity's axes sizes orientation relative direction. Also using obtained from numerical-material point method (MPM) simulations, a...

ژورنال: Annals of Applied Sport Science 2013

Talent identification and training the athletes of the basic levels in track and field requires codifying a proper model like any other system so that any duplication is prevented as well as knowing the right path. The federation of track and field started to codify the national talent-identification scheme in track and field in 1385. Hence, the present studies track-and-field talent-identifi...

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