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An Innovative Method for Improving the Structural Integrity using SMA Revolutionary Technology

Objective

The project proposes to develop a revolutionary coating that will be able to alter and control the mechanical properties of materials by external stimuli. This novel coating will be able to contribute to the stiffness and rigidity of an elastic metallic structure, to withstand the expected loading conditions safely, to enhance the integrity of a damaged structure and at the same time to protect it from corrosion. Such coating can bring multiple breakthroughs from the design level to the maintenance and repair level of the structure. The innovative compounds of the proposed coating are elements of smart materials - Shape Memory Alloys (SMAs). SMA elements are designed materials that have one or more properties that can be significantly changed in a controlled fashion by external stimuli. They can sense temperatures or stress as a function of change in damping, stiffness, electrical resistivity and deflection. It is specifically the latter aspect, which makes SMAs highly interesting for the particular application, since it is the actuation function built into the material. The innovative concept of the coating is described briefly as follows: upon mechanical loading the structure and hence the coating are deformed together as a system. However, by heating the coating, the SMA elements tend to recover their experienced deformations and return to their original shape. At this point, shear forces will be developed to the interface between coating and structure. The developed shear forces are expected to mitigate the deformation of the structure and reduce the level of the stress field. The latter is a great benefit for the regions, where cracks exist, since the local reduction of the stress field will delay the crack propagation and hence the structural failure. Finally, the coating will be also followed by a system that will ensure a satisfactory cover of the metallic surface, as well as a module for assessing the effect of any structural defects that may exist.

Field of science

  • /engineering and technology/materials engineering/coating and films
  • /natural sciences/physical sciences/electromagnetism and electronics/electrical conductivity

Call for proposal

H2020-FETOPEN-2014-2015-RIA
See other projects for this call

Funding Scheme

RIA - Research and Innovation action

Coordinator

CRANFIELD UNIVERSITY
Address
College Road
MK43 0AL Cranfield - Bedfordshire
United Kingdom
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 603 113

Participants (3)

PANEPISTIMIO IOANNINON
Greece
EU contribution
€ 534 750
Address
Panepistemioypole Panepistemio Ioanninon
45110 Ioannina
Activity type
Higher or Secondary Education Establishments
UNIVERSITA DEGLI STUDI DELLA CAMPANIA LUIGI VANVITELLI
Italy
EU contribution
€ 466 000
Address
Viale Abramo Lincoln 5
81100 Caserta
Activity type
Higher or Secondary Education Establishments
EXIS INNOVATION LTD
United Kingdom
EU contribution
€ 391 250
Address
Unit 1 The Cam Centre Wilbury Way
SG4 0TW Hitchin
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)