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Associate Professor

+39 0110906933 / 6933 (DIMEAS)

Scientific branch ING-IND/14 - PROGETTAZIONE MECCANICA E COSTRUZIONE DI MACCHINE
(Area 0009 - Ingegneria industriale e dell'informazione)
Identifiers ORCID: 0000-0002-0557-7162
Research topics Tribology and contact mechanics. This activity aims to analyze the contact parameters ant their interaction with fretting wear. Special test rigs have been developed for this activity. The main features of these rigs are that the relative displacement between contact surfaces is measured with high accuracy (1 μm) and tests can be performed at high temperature (up to 1050 °C). High temperature is necessary if tests must be representative of the operational conditions of the aeroengine. The objective of these test is to evaluate the wear ratio (loss volume per unit cycle or dissipated energy) of the contact materials. Moreover, during the test contact parameters such as contact stiffness and friction coefficient are also measured. These parameters are of paramount importance to set a reliable contact model to simulate the dynamic behavior of systems with joint or contacts in general. The theoretical part of this activity is dedicated to set up wear and contact models. Wear models aims to mimic experimentally observed fretting wear with code fast and simple enough to be included into dynamic simulations. Contact models aims to calculate the contact stiffness, both along the normal and tangential direction, on geometry representative of the typical contacts in the aeroengine - shrouds, blade attachments, under-platform, ring dampers and more. The computation tools are validated on the geometries experimentally tested on the rigs.
Skills and keywords

ERC sectors

PE8_1 - Aerospace engineering PE8_4 - Computational engineering PE8_7 - Mechanical and manufacturing engineering (shaping, mounting, joining, separation)

SDG

Goal 7: Affordable and clean energy Goal 9: Industry, Innovation, and Infrastructure

Keywords

Aeroengine Contact mechanics Nonlinear dynamics Tribology
Scientific responsibilities and other assignments

Editorial boards

  • MATERIALS (2021-), Guest Editor of magazine or editorial series
  • MATERIALS (2021-), Editorial board member
  • MATERIALS (2020-2021), Guest Editor of magazine or editorial series

Conferences

  • 26th International Congress on Sound and Vibration - ICSV26/ International Institute of Acoustics and Vibration (IIAV) and the Canadian Acoustical Association (CAA), Canada, 7-11/7/2019, Participation to the organizing committee
  • ASME Turbo Expo 2019 - STRUCTURES & DYNAMICS: STRUCTURAL MECHANICS, VIBRATION & DAMPING/ ASME - American Society of Mechanical Engineer, Stati Uniti, 17-21/6/2019, Participation to the organizing committee
  • ASME Turbo Expo 2018 - STRUCTURES & DYNAMICS: STRUCTURAL MECHANICS, VIBRATION & DAMPING/ ASME - AMERICAN SOCIETY OF MECHANICAL ENGINEERS, Norvegia, 11-15/6/2018, Participation to the organizing committee

Other research or teaching roles outside Politecnico

  • Professore Associato confermato at Tongji University (17/9/2012-9/11/2012)
  • Professore Associato confermato at Tongji University (17/9/2012-9/11/2012)
  • Professore Associato confermato at Tongji University (28/2/2011-22/4/2011)
  • Professore Associato confermato at Tongji University (28/2/2011-22/4/2011)