Results 111 to 120 of about 99,961 (252)

Peculiarities of metal work in the defect formation zone of a monoblock crossing

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. The paper analyses the causes of appearance and development of defects of the solid block with wing rails and welded rail ends (monoblock crossing) operating under heavy and intensive traffic conditions.
P. V. Tregubchak
doaj   +1 more source

Concrete in architecture: Redefining form, space, function, and insights from bibliometric analysis

Structural Concrete, EarlyView.
Abstract Concrete has become a cornerstone in architectural and engineering innovation, as it seamlessly integrates structural performance with artistic expression. Its evolution from ancient opus caementicium to contemporary ultra‐high‐performance concrete illustrates its adaptability to the change in technological, environmental, and design paradigms.
Mouhcine Benaicha, Khalid El Harrouni, Samir Kabouss   +2 more
wiley   +1 more source

Generation of geometric irregularities as random disturbances causing rail cab oscillations

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. Solving the dynamics problems of rail cabs requires specifying the kinematic disturbance of their oscillations represented through equivalent vertical and horizontal geometric irregularities of the left and right rails.
A. N. Savoskin, N. S. Lavlinskaya
doaj   +1 more source

Impact of half‐joint failures on RC girder bridges: A robustness quantification study

Structural Concrete, EarlyView.
Abstract The robustness of bridge structures is critical to ensuring safety and service continuity, particularly in aging infrastructure exposed to degradation and unexpected loads. Reinforced concrete (RC) half‐joint bridges—widely built in Italy between the 1950s and 1970s—exhibit specific vulnerabilities due to inspection challenges, durability ...
Paolo Martinelli, Matteo Colombo
wiley   +1 more source

Comparative analysis of ultrasonic control sensitivity in using straight and angle piezoelectric transducers of different manufacturers on the example of flaw detector UD2-102 Peleng

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. Railway transport has ultrasonic control as one of the main methods of detection of defects of the type of continuity violation (cracks, pores and others) both in the base metal and in weld seams of various items.
A. G. Otoka, O. V. Kholodilov
doaj   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

Rail steel contact fatigue curves

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. The problem of contact fatigue damage of rails has become especially urgent with the intensified railway freight load. An effective method of studying various damage factors is mathematical simulation of the dynamics of motion and ...
V. I. Sakalo, A. V. Sakalo
doaj   +1 more source

Pickin' up good vibrations: a systematic review of footfall detection and analysis in the realm of wildlife surveying

Wildlife Biology, EarlyView.
Exploration of new wildlife surveying methodologies that leverage advances in sensor technology and machine learning has led to tentative research into the application of seismology techniques. This, most commonly, involves the deployment of a footfall trap – a seismic sensor and data logger customised for wildlife footfall.
Benjamin J. Blackledge, Luigi La Spada, Robert A. Briers, Niamh M. McHugh, Patrick J. C. White   +4 more
wiley   +1 more source

Speed curve analysis-based determination of additional resistance to train motion from undercarriage generators

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. Traction calculations take into account additional resistance to train motion from the action of undercarriage generators using statistical data from field tests of rolling stock samples.
I. O. Lobytsin, I. A. Pankov, V. V. Fedin, N. A. Baranov, K. I. Shvedin, S. O. Litvintsev   +5 more
doaj   +1 more source

New applications for phosphoric acid fuel cells [PDF]

New applications for phosphoric acid fuel cells were identified and evaluated. Candidates considered included all possibilities except grid connected electric utility applications, on site total energy systems, industrial cogeneration, opportunistic use ...
Breuer, C. T., Stickles, R. P.
core   +1 more source