Results 31 to 40 of about 109,455 (267)

Development of torus-shaped elastic body as a vibration absorber for flexural vibration in railway vehicle carbody and its experimental validation using commuter-type vehicle

Mechanical Engineering Journal, 2017
This paper presents a study to reduce flexural vibrations of rail vehicle carbody, which have large impact on ride quality, by utilizing deformation of an elastic body as a dynamic vibration absorber (DVA).
Takahiro TOMIOKA, Satoshi TACHIKAWA, Yuki AKIYAMA   +2 more
doaj   +1 more source

Influence of Shear Effects on the Characteristics of Axisymmetric Wave Propagation in a Buried Fluid-Filled Pipe

Chinese Journal of Mechanical Engineering, 2022
The acoustic propagation characteristics of axisymmetric waves have been widely used in leak detection of fluid-filled pipes. The related acoustic methods and equipment are gradually coming to the market, but their theoretical research obviously lags ...
Ping Lu, Xiaozhen Sheng, Yan Gao, Ruichen Wang   +3 more
doaj   +1 more source

Noise from Different Metro Train Types on Elevated Tracks: A Case Study Based on Field Measurements

Buildings
To systematically investigate the influence of metro train types on the operational noise of elevated rail transit, this study conducted field measurements on elevated sections of the Wuhan Metro Yangluo Line, Wuhan Metro Line 2, and Guangzhou Metro Line
Lizhong Song, Zhichao Wang, Pengfei Zhang, Quanmin Liu, Bingyang Bai   +4 more
doaj   +1 more source

Exposure to long-term source-specific transportation noise and incident breast cancer: A pooled study of eight Nordic cohorts

Environment International, 2023
Background: Environmental noise is an important environmental exposure that can affect health. An association between transportation noise and breast cancer incidence has been suggested, although current evidence is limited.
Jesse D. Thacher, Anna Oudin, Erin Flanagan, Kristoffer Mattisson, Maria Albin, Nina Roswall, Andrei Pyko, Gunn Marit Aasvang, Zorana J. Andersen, Signe Borgquist, Jørgen Brandt, Karin Broberg, Thomas Cole-Hunter, Charlotta Eriksson, Kristina Eneroth, Hrafnhildur Gudjonsdottir, Emilie Helte, Matthias Ketzel, Timo Lanki, Youn-Hee Lim, Karin Leander, Petter Ljungman, Jonas Manjer, Satu Männistö, Ole Raaschou-Nielsen, Göran Pershagen, Debora Rizzuto, Malte Sandsveden, Jenny Selander, Mette K. Simonsen, Lara Stucki, Mårten Spanne, Leo Stockfelt, Anne Tjønneland, Tarja Yli-Tuomi, Pekka Tiittanen, Victor H. Valencia, Mikael Ögren, Agneta Åkesson, Mette Sørensen   +39 more
doaj   +1 more source

Emission of Structural Noise of Tank Wagons Due to Induced Vibrations during Wagon Operation

Vibration, 2022
Railway transport is considered relatively environmentally friendly in terms of energy consumption and air pollution, but it is relatively unfriendly in terms of noise pollution.
Ján Ďungel, Juraj Grenčík, Peter Zvolenský   +2 more
doaj   +1 more source

Evaluation of the effect of wheel tread condition on the dynamic response of PC sleepers

Nihon Kikai Gakkai ronbunshu
Prestressed concrete sleepers (PC sleepers) are an important component of railway tracks. The dynamic response of PC sleepers to passing trains is influenced by various factors relating to the vehicles and tracks. However, few studies have quantitatively
Keiichi GOTO, Tsutomu WATANABE, Tsugutoshi KAWAGUCHI, Takeshi SUEKI, Tomoya YAMASHITA, Daisuke MIMURA   +5 more
doaj   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Railway noise annoyance and the importance of number of trains, ground vibration, and building situational factors

Noise and Health, 2012
Internationally accepted exposure-response relationships show that railway noise causes less annoyance than road traffic and aircraft noise. Railway transport, both passenger and freight transport, is increasing, and new railway lines are planned for ...
Anita Gidlöf-Gunnarsson, Mikael Ögren, Tomas Jerson, Evy Öhrström   +3 more
doaj   +1 more source

The Insistence of Blackness and the Persistence of Antiblackness in Ireland

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper positions Ireland as a critical site for examining the insistence of blackness and an antiblackness created and sustained through Irish ethnonationalist imaginaries and exclusionary processes. Drawing on connected sociologies and Irish Black Studies, this enquiry argues that antiblackness in Ireland operates as a generational force,
Philomena Mullen
wiley   +1 more source

Basic study on vertical vibrations suppression in railway vehicle carbody by secondary suspension control using bogie vertical vibration velocity

Nihon Kikai Gakkai ronbunshu
This study investigates a new method for the effective application of active secondary suspension for reducing vertical vibration of the carbody to improve ride comfort of railway vehicles.
Yoshiki SUGAHARA, Ayumi AMANO
doaj   +1 more source