Results 51 to 60 of about 5,247 (220)

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

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, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

More on the Fatigue Resistance Assessment of the Freight Car Bogies’ Cast Parts

Вестник Научно-исследовательского института железнодорожного транспорта, 2015
Quality of solebars and bolsters is assessed by the value of fatigue safety factor. In the respective calculations they use experimental fatigue limits of individual component parts obtained in the course of their fatigue testing.
A. V. Sukhov, V. A. Reykhart
doaj  

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Evaluation of Modeling Assumptions for Predicting Structural Damage and Train Derailment Under Earthquake Loading

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The rapid development of new railway networks and the aging of existing infrastructure in seismic‐prone regions continue to motivate the need for efficient methods to simulate the dynamic behavior of coupled train track structure systems. While detailed train–structure interaction (TSI) models can capture complex mechanisms, they are often too
Miguel A. Gomez, Matthew J. DeJong
wiley   +1 more source

Effect of Ammonium Polyphosphate/Silicate Content on the Postfire Mechanics of Epoxy Glass‐Fiber Composites Using Facile Chocolate Bar‐Inspired Structures

Fire and Materials, Volume 49, Issue 3, Page 329-346, April 2025.
ABSTRACT This study investigates the postfire mechanical properties of epoxy glass‐fiber reinforced composites (EP GFRCs) using increasing concentrations of ammonium polyphosphate (APP) and inorganic silicate (InSi) to modify the char and fire residue.
Sruthi Sunder, Maria Jauregui Rozo, Sneha Inasu, Dietmar Meinel, Bernhard Schartel, Holger Ruckdäschel   +5 more
wiley   +1 more source

Tourism, Democracy and Economic Growth in Africa

Journal of International Development, EarlyView.
ABSTRACT While numerous studies have explored the determinants of economic growth, research on the impact of tourism and democracy on economic growth remains debated in both developed and developing countries. Furthermore, studies examining the moderating role of democracy in the tourism–economic growth relationship are particularly scarce.
Toyo A. M. Dossou, Simplice A. Asongu, Kihumuro Jotham, Symphorien Zogbassè   +3 more
wiley   +1 more source

Combined Method of Ballastless Track Examination

Вестник Научно-исследовательского института железнодорожного транспорта, 2015
For obtaining precise enough values of the required probabilistic characteristics it is necessary to carry out a large number of full-scale experiments demanding for considerable expenditures (especially in the case of ballastless track examination). For
A. V. Savin
doaj  

Interaction Between Vortex‐Induced Vibrations and Base Vibrations in Piezoelectric Harvesters

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In the present era, powering sensors using green energy is a significant challenge. One promising solution for the power supply of small sensors relies on piezoelectric energy harvesters excited by vortex‐induced vibrations (VIVs) generated by wind.
Michele Tonan, Ilaria Palomba, Alberto Pasetto, Alberto Doria   +3 more
wiley   +1 more source

Development of Credibility Enhancement Method of Oil Products Metering at the Fuel Storage Depots

Вестник Научно-исследовательского института железнодорожного транспорта, 2015
Tank calibration curve proves to be one of the most important characteristics in the context of oil products related metering and calculation operations inclusive of those performed in the environment of Unified Automated Accounting System of Diesel Fuel
A. G. Godnev
doaj  

Robustness Assessment of Public Transport Networks in Various Graph Representations: Systematic Review, Decision Support, and Case Study

Networks, EarlyView.
ABSTRACT The analysis of certain properties of the underlying graph of a public transport network generates insights about the network's structure. Hereby, the choice of the graph representation depends on a trade‐off between complexity reduction and information preservation to adequately model a public transport network.
Michael Palk, Stefan Voß, Raka Jovanovic   +2 more
wiley   +1 more source