Browsing by Author "De Iorio, Antonio"

Now showing items 1-8 of 8

    • An analytical model for the identification of the threshold of stress intensity factor range for crack growth 

      Grasso, Marzio; De Iorio, Antonio; Xu, Yigeng; Haritos, George; Mohin, Muhodin; Chen, Yong (2017-01-18)
      The value of the stress intensity factor (SIF) range threshold (∆K_th ) for fatigue crack growth (FCG) depends highly on its experimental identification. The identification and application of ∆K_(th )are not well established ...

    • A decomposable freight wagon frame suitable for bimodal transport systems that uses a fast locking mechanism 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio; Chioccola, Francesco (2014-05)
      This paper describes a novel connection system which allows fast, safe and reliable coupling and uncoupling of two sections of a freight wagon body as part of a bimodal transport system. The connection system allows the ...

    • Fatigue crack growth simulation in railway axles 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio (TRANS TECH PUBLICATIONS LTD, 2011-09)
      In order to carry out the railway axle design according to the "Damage Tolerance" philosophy, reliable crack-growth models for these kind of components are necessary. Indeed, damage tolerance principles have received more ...

    • On the ballast-sleeper interaction in the longitudinal and lateral directions 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio; Rossi, Stefano; Testa, Mario (2018-02-01)
      In service, railway tracks must withstand the transverse and longitudinal forces that are caused by running vehicles and thermal loads. The mechanical design that adopts any of the track models available in the technical ...

    • Selection and ranking of the main beam geometry of a freight wagon for lightweighting 

      Matsika, Emmanuel; O'Neill, Conor; Grasso, Marzio; De Iorio, Antonio (2016-11-16)
      The traditional freight wagons employ I-beam sections as the main load-bearing structures. The primary loads they carry are vertical (from loading units) and axial (from train traction and buffers). Ease of manufacturing ...

    • Transverse strength of railway tracks : Part 1. planning and experimental setup 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio; Pinto, Paolo; Rossi, Stefano; Testa, Mario; Farneti, Giuseppe (2014-10-01)
      Several studies have been carried out until now by various Research Agencies and Railway Administrations to quantify the effects of the track-bed geometrical characteristics on the transverse strength of the track. ...

    • Transverse strength of railway tracks : Part 2. Test system for ballast resistance in line measurement 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio; Rosiello, Vincenzo (2014-10-01)
      In the present paper, testing methods currently adopted to measure the in service ballast resistance are synthetically reviewed to identify the main sources of uncertainty influencing the test loads and to define an ...

    • Transverse strength of railway tracks : Part 3. Multiple scenarios test field 

      De Iorio, Antonio; Grasso, Marzio; Penta, Francesco; Pucillo, Giovanni Pio; Rosiello, Vincenzo; Lisi, Stefano; Rossi, Stefano; Testa, Mario (2014-10-01)
      In the present paper the design and construction choices of a test field for the ballast lateral resistance measurement, in order to produce data useful for the development of a numerical model able to simulate the service ...