CORDIS
EU research results

CORDIS

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Pushing the Frontier of Brittlness
Damage Resistant Glasses

Project information

Grant agreement ID: 320506

Status

Closed project

  • Start date

    1 June 2013

  • End date

    31 May 2018

Funded under:

FP7-IDEAS-ERC

  • Overall budget:

    € 1 821 596

  • EU contribution

    € 1 821 596

Hosted by:

UNIVERSITE DE RENNES I

France

Objective

"In order to improve the strength of a glass part (flat display, window, lens, fiber, etc.), most investigations so far were devoted to thermal and chemical surface treatments aimed at generating compressive stresses at the surface. The DAMREG project focuses on the incidence of the glass composition and atomic network structure on the mechanical properties, and specifically on the cracking and fracture behavior, and is based on the experience and expertise of the PI on the structure-property relationships in glass science. This project proposes to address the fundamental issue of glass brittleness in a new paradigm of thinking, questioning the usefulness of the standard fracture toughness parameter, with emphasis on the surface flaw generation process (multiscale approach), and aims at determining novel routes to improve the mechanical performance of glass further promoting innovative applications. DAMREG involves revisiting the fundamental fracture mechanics concepts, the preparation of novel glass compositions, and nanoscale physico-chemical and mechanical characterization. So far most glass fracture studies focused on the crack tip behavior, and were limited to vitreous silica. A crack acts as a lever arm for the stress so that the singular stress at the tip is proportional to the crack length and inversely proportional to the square-root of the tip radius (provided this has a meaning). Since a crack can hardly be cured or shielded at ambient, the presence of a sharp crack is already detrimental. On the contrary to this approach, DAMREG is aimed at understanding the crack initiation process, and the main objective is to define some roadmap to design glasses (composition, thermo-mechanical treatments etc.) with better damage (initiation) resistance."
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Principal Investigator

Tanguy Gilles Michel Rouxel (Prof.)

Host institution

UNIVERSITE DE RENNES I

Address

Rue Du Thabor 2
35065 Rennes Cedex

France

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 1 821 596

Principal Investigator

Tanguy Gilles Michel Rouxel (Prof.)

Administrative Contact

Yolaine Bompays (Mrs.)

Beneficiaries (1)

UNIVERSITE DE RENNES I

France

EU Contribution

€ 1 821 596

Project information

Grant agreement ID: 320506

Status

Closed project

  • Start date

    1 June 2013

  • End date

    31 May 2018

Funded under:

FP7-IDEAS-ERC

  • Overall budget:

    € 1 821 596

  • EU contribution

    € 1 821 596

Hosted by:

UNIVERSITE DE RENNES I

France