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IDERPLANE SIGNED

Innovative DEsign for Reliable PLANEt bearings

Total Cost €

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EC-Contrib. €

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Partnership

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Project "IDERPLANE" data sheet

The following table provides information about the project.

Coordinator
POLITECNICO DI MILANO 

Organization address
address: PIAZZA LEONARDO DA VINCI 32
city: MILANO
postcode: 20133
website: www.polimi.it

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Italy [IT]
 Total cost 761˙593 €
 EC max contribution 749˙968 € (98%)
 Programme 1. H2020-EU.3.4.5.1. (IADP Large Passenger Aircraft)
 Code Call H2020-CS2-CFP07-2017-02
 Funding Scheme CS2-IA
 Starting year 2018
 Duration (year-month-day) from 2018-11-01   to  2021-10-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    POLITECNICO DI MILANO IT (MILANO) coordinator 254˙375.00
2    UNIVERSITA DEGLI STUDI DI BRESCIA IT (BRESCIA) participant 273˙125.00
3    INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE LYON FR (VILLEURBANNE CEDEX) participant 145˙343.00
4    LIBERA UNIVERSITA DI BOLZANO IT (BOLZANO) participant 50˙000.00
5    ARGO SRL IT (TORINO) participant 27˙125.00

Map

 Project objective

The high power transmissions that have to be designed for modern highly efficient turbofans need the extensive application of epicyclical gears with planet gear containing an integrated bearing. These components are subjected to severe rolling contact fatigue (RCF) conditions as many others (e.g. wheels/rails of high speed trains): propagation of micro-cracks starting from the bearing race surface and leading to spalling is a typical damage mode of these components.

The main idea behind IDERPLANE is to analyze the problem not in terms of the usual stress-based design of gears, but rather on damage tolerance concepts. This kind of analysis is meant at understanding/measuring the risk of a catastrophic failure in the case of development of subsurface propagation of cracks driven by shear stresses. Incidentally, it has to be emphasized that spalls can lead to sub-surface cracks only once they have reached a critical size.

If this could be seen an established route, unfortunately RCF is a grey area where there are no data available for such an analysis (that should be based on reliable crack growth curves), because it is very difficult to make cracks propagate under shear as it happens in RCF (and as it was shown in the known failures of planet gear containing an integrated bearing). This is the strength and unicity of the IDERPLANE consortium where the partners have special technology and abilities: to obtain crack growth curves under RCF conditions on specimens (PoliMI) ; to reproduce the subsurface crack propagation in bi-disks experiments (UniBS); to follow and track the development of cracks under complex load conditions (INSA).

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The information about "IDERPLANE" are provided by the European Opendata Portal: CORDIS opendata.

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