Results 111 to 120 of about 339,893 (364)
Electronic coverage as of May 8, 2006: 2005-; Description based on: 2005; title from cover of PDF document (viewed May 8, 2006).; Report evaluates improvements made three years previously.; Harvested from the web on 5/10/06Addresses the progress being ...
Ohio Rail Development Commission.
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The development of rail-head acoustic roughness
, 2009 A model of the development of rail-head acoustic roughness on tangent track has been formulated. The model consists of a two-dimensional time domain wheel-rail interaction force calculation, with the normal force used as the input to a two-dimensional ...
Croft, Briony Elizabeth
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Deep Underground Science and Engineering, EarlyView.Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang +4 more
wiley +1 more source
Rail Reform Strategies: The Australian Experience [PDF]
Widely different approaches to rail reform are evident across countries and within Australia. Reforms have involved structural separation (both vertical and horizontal) and varying degrees of private sector involvement.
Helen Owens
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Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface
Deep Underground Science and Engineering, EarlyView.Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen +6 more
wiley +1 more source
LubricantsThe electromagnetic railgun, a novel kinetic energy weapon, has found utility in military operations due to its enhanced safety features and superior precision. This study investigates the enhancement of wear resistance in CuCrZr rails through the plasma
Yang Wang +7 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
Universitas Humanística, 2008 This article presents and analyzes the identity construction process of a rail workers collective of rural origin that was linked to an industrial work environment by the middle of the 20th century in Bogotá.
Aída Patricia Rodríguez-Leuro
doaj
Deep Underground Science and Engineering, EarlyView.Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao +5 more
wiley +1 more source
Two-point wheel-rail contact investigation [PDF]
Transport Problems, 2011 This paper describes a wheel - rail contact for a case when one contact point is located on the wheel tread while the other is on the wheel flange. The locations of these points are determined for both wheels for given lateral displacement and yaw angle ...
Alexandr GOLUBENKO +3 more
doaj