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18 januari 2018

Approved FOM programme


Number i35
Title Physics of failure (PoF)
Executive organisational unit BUW
Programme management Prof.dr.ir. J. Sietsma
Duration 2014-2018
Cost estimate M€ 2.5
Partners Prorail, SKF, DAF, Tata Steel and Philips, via M2i

The objective of the programme is to unravel the physical complexity of the initiation and development of damage and failure in complex and dynamically changing microstructures in metals. Existing physical models on the initiation and propagation of damage in metallic materials are limited in terms of the specific microstructural features and physics accounted for. The physics of damage involves interacting processes and mechanisms at the nano-, micro- and macro-scale, i.e. from structural defects on the nano-scale (dislocations, grain boundaries, interphase boundaries) through damage development within the grain structure at a micro-scale to macroscopic failure.

Background, relevance and implementation
Failure, i.e. the deterioration of the functionality of a material or component, determines the environmental and economic effects of the use of materials in technological and consumer products. In the present period of increasing materials (element) scarcity and reduced availability of raw materials, the life time of (consumer) products must be improved. In addition, physical models should be accurate enough for reliable predictions of performance and life time of metallic components. In order to address these challenges, it is necessary to better understand failure mechanisms. Besides the societal reasons and urgency, the initiation and development of damage and failure in metallic microstructures pose challenging scientific questions.

The programme combines projects that focus on the microstructural damage mechanisms in metals, projects that focus on the controlling (local) loading conditions and projects that focus on modelling the accompanying physics across the scales. The intensive interaction between the projects enables to develop an in-depth view on the evolution of damage and failure in metallic microstructures, which goes well beyond the state-of-the-art in the field..

The final evaluation of this programme will consist of a self-evaluation initiated by the programme leader and is foreseen in 2018.