Results 41 to 50 of about 34,422 (242)
Archives of Civil Engineering, 2010 Zachowanie sie betonów wysokowartosciowych (BWW) w warunkach działania wysokiej temperatury moze stanowic powazne ograniczenie ich stosowania w budownictwie. BWW poddane działaniu wysokich temperatur, jakie wystepuja np.
Hager I., Tracz T.
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Investigations on the Material Efficacy of Failed Helical Gears in a Gear Train [PDF]
, 2013 An investigation on the material efficacy of failed helical gears in the gearbox of an automobile has been carried out. Two helical gear samples taken as representatives of the whole of six in the gearbox were denoted as samples A and B.
Abidakun, O.A. +2 more
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Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN
Deep Underground Science and Engineering, EarlyView.A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source
Effect of Spalling Shape on Meshing Stiffness and Dynamics Characteristic of Gear
Jixie chuandong, 2020 The traditional research on spalling gear failure mainly focuses on the change of gear stiffness under different spalling depth and width，it has great limitations. Aiming at this problem，the influence of spalling shape and the spalling shape distribution
Tu Xuxin, Jian Xiaochun, Wu Shengli
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Deep Underground Science and Engineering, EarlyView.A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan +6 more
wiley +1 more source
Sensors, 2021 The detection of concrete spalling is critical for tunnel inspectors to assess structural risks and guarantee the daily operation of the railway tunnel.
Mingliang Zhou +3 more
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Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
Sensors, 2022 To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical ...
Hongtao Liu +8 more
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Polypropylene fibres within concrete with regard to heat induced spalling and reduction in compressive strength [PDF]
, 2008 The paper examines the effect of various polypropylene fibre additions (Types 1 and 2 and different fibre volumes) to concrete with regard to explosive spalling when subject to high temperatures similar to that experienced in building or tunnel fires ...
Richardson, Alan
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