Development and study of a new class of shape memory releasable fasteners

Project Information

CERINKA

Grant agreement ID: 46559

Project closed

Start date 30 March 2007

End date 29 March 2009

Funded under

• Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006

Total cost No data

EU contribution € 80 000,00

Coordinated by

FYZIKALNI USTAV AV CR (INSTITUTE OF PHYSICS ACADEMY OF SCIENCES OF THE CZECH REPUBLIC)
Czechia

Objective

Sixty years ago, a new releasable fastener (RF), which is now known by the brand name 'Velcro' was proposed. This RF consists of an array of hooks interlocking with a field of numerous fiber loops, and thus two surface areas are fastened together. The Velcro RF is an example of a successful application which achieved everyday usage.

However, there is a disadvantage with this RF: A sharp sound when pulling apart the two tied parts. This sound may disqualify Velcro RFs in some situations. One of the aims in our proposal is the development of a new RF with the same function as a Velcro RF, but without the sharp sound upon releasing. To achieve this aim, we suggest the use of both the pseudoelastic effect (PE) of the shape memory alloys (SMAs) and permanent magnet (PM) attraction.

Both areas that are to be fastened consist of two regions: the region of SMA hooks and the region of PMs. While the PMs serve to keep the attractive force in the perpendicular direction, the SMA hooks secure the connection mainly in the lateral directions. Another aim is related to modeling the PE. As the PE is an integral part of the RF design, an understanding of the hysteretic behaviour of the SMAs is of substantial importance.

The aim of this theoretical part of the project is to describe the hysteretic behaviour. This aim will be achieved through phenomenological modeling. In the proposal, several disciplines such as material and mechanical engineering, magnetism, etc. meet, and thus the proposed work has a multidisciplinary character which is one of the aims of the work programme.

Since most of the knowledge that is required to achieve the goals of the project was acquired by the proposer during his six years' employment at the Tsing-hua University, through the project a certain knowledge transfer may be realized. The project will help maintain the stable collaboration between the host institution and the Tsinghua University ¿ the place where the proposer of the project has conducted his research.

Fields of science (EuroSciVoc)

CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.

• engineering and technology › materials engineering › fibers
• engineering and technology › mechanical engineering
• social sciences › economics and business › business and management › employment

You need to log in or register to use this function

Keywords

• Permanent magnets
• Pseudoelastic effect
• Shape memory alloys

Programme(s)

• FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006

Topic(s)

• MOBILITY-4.2 - Marie Curie International Reintegration Grants (IRG)

Call for proposal

FP6-2004-MOBILITY-12
See other projects for this call

Funding Scheme

EIF - Marie Curie actions-Intra-European Fellowships

Coordinator

FYZIKALNI USTAV AV CR (INSTITUTE OF PHYSICS ACADEMY OF SCIENCES OF THE CZECH REPUBLIC)

• EU contribution: No data
• Address: Na Slovance 2 ; PRAGUE ; Czechia
• Total cost: No data