Blar i Institutt for konstruksjonsteknikk på forfatter "Malekjafarian, A."
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The calibration challenge when inferring longitudinal track profile from the inertial response of an in-service train
Quirke, Paraic; OBrien, Eugene J; Bowe, Cathal; Cantero, Daniel; Malekjafarian, A. (Peer reviewed; Journal article, 2021)An Irish Rail intercity train was instrumented for a period of one month with inertial sensors. In this paper, a novel calibration algorithm is proposed to determine, with reasonable accuracy, vehicle model parameters from ... -
Drive-by scour monitoring of railway bridges using a wavelet-based approach
Fitzgerald, Paul; Malekjafarian, A.; Cantero, Daniel; OBrien, Eugene J; Pendergast, Luke (Journal article; Peer reviewed, 2019)This paper numerically investigates the feasibility of using bogie acceleration measurements from a passing train to detect the presence of bridge scour. The Continuous Wavelet Transform is used to process the simulated ... -
Railway track loss-of-stiffness detection using bogie filtered displacement data measured on a passing train
Malekjafarian, A.; OBrien, Eugene J; Quirke, Paraic; Cantero, Daniel; Golpayegani, Fatemeh (Peer reviewed; Journal article, 2021)This paper presents an innovative numerical framework for railway track monitoring using acceleration measurements from sensors installed on a passenger train. A numerical model including a 10 degrees of freedom train ...