Project: Micro and Nano Mechanical Probe for Polymeric Surfaces with in situ display of the contact.
CSM Instruments is a Switzerland company that develops manufactures and sells instruments to characterize surface behaviour. The company is the leader for this kind of devices. The Institut Charles Sadron is a French lab of the CNRS. Its research area is the polymer science encompassing polymer chemistry, physics and engineering. The group of "Physical Mechanics and Tribology of Polymers" (PMTP) has an experimental expertise. The group works on the mechanical properties of polymeric surfaces (friction, scratching, indentation), the mechanisms of damage (cracking, blistering of coating, creeping and self healing of imprint), and the mechanical properties of soft matter (dynamic interfacial adhesion, high friction coefficient). _x000D__x000D_The two Ps have previously collaborated. In 2008 a license of know-how has been signed to transfer one of the major features of the experimental devices of the group [1]. This part allows to show through transparent sample the true contact area, to analyse without be model dependant the contact mechanisms. Currently the PMTP group tests the CSM prototype of the commercial version of this in-situ vision, included in a nano indenter tester. This test phase authorises to obtain some new results as for the first time the possibility to record simultaneously the load applied, the depth and the contact area is given. In addition, CSM has started the valorisation of this transfer with the diffusion of an application bulletin to their customers [2], and with the provision of this prototype to few customers (opinion leaders) over the world._x000D__x000D_Hence, this proposal will aim to develop new and original loading modes and post treatment processes, to authorize the access at specific surface properties. The present project will increase the interest of this innovative device, by increasing the number of applications and of kind of materials properties which may be analysed. The approach will be experimental and in this study, nano and microtribology experiments will be performed on surfaces with spherical conical and pyramidal tips of controlled roughness using some original devices (friction tests at controlled mean contact pressure, creep and recovering of the imprint ...). The ICS team has already developed a set of experiments on polymeric surfaces. These experiments authorize the in situ observation of the contact at controlled temperature and velocity. The CSM company will be interested by the development of the methodology of polymeric nanotribological testing, to propose innovative way of analysis to the market._x000D__x000D_To explain the complementarity of the consortium, _x000D_- one of the specificity of the ICS group is to have developed original devices which allow recording some mechanical information without being model dependant. For example, to study the creep and viscoelastic recovery behavior of the polymer surface, i.e. to analyse the "self healing" of the imprints left on the surface and of the grooves left after the contact phase, the group has updated a home made apparatus named "microvisioscratch" and added a new set-up and new driving mode. This device authorizes in-situ observations of the contact area during tests and then determination of the true contact geometry, without the need of any intermediate model. After the creep phase, the indentor takes off the surface and a glass blade slides over the residual imprint. The resulting interference fringes permit to analyse the depth of the imprint. So the volume of the residual imprint during recovery phase can be described as a function of recovery time. It is one example of the new possibilities of analysis given by the set-up._x000D_- on the other side, CSM Instruments has been a leader in the nanoindentation and nanoscratch doCO for the last 15 years. It has a large experience with indention and scratch on various materials and various scales as well as a deep knowledge on the indentation and scratch techniques. Not only CSM Instruments has been active in manufacturing top technology nanoscale instruments, it has also developed and improved many of these instruments over the years. CSM Instruments has already developed a strong network of Pship in the soft coatings & polymer industry (Dupont, BASF)._x000D__x000D_So, this project aims to transfer the knowledge and the know-how on the mechanical and physical characterization on polymeric surfaces. To do that, the project is organized in four technical WP, one WP of management, and on WP devoted to the dissemination of results and to the communication to potential customers._x000D__x000D_Ref._x000D_[1] non exclusive licence of know-how between the CNRS and CSM Instruments company (CH) L08119 (2008), on the world exploitation of the in situ vision device (for friction/scratch apparatus)_x000D_ _x000D_[2] Application Bulletin n°39 "In-situ observation of the scratch/indentation true contact area to provide analysis without being model-dependent"_x000D_http://www.csm-instruments.com/en/Application-Bulletins-Summary_x000D_ _x000D_
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Acronym
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MiNaMech_Visu
(Reference Number: 8174)
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Duration
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02/09/2013 - 26/08/2016
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Project Topic
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ICS has developed a set-up to display the true contact area to analyse surface properties without being model dependant. CSM Instruments has the licence of know-how. The project will transfer the knowledge of ICS to reduce the time necessary to enter a market and increase the kind of applications.
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Network
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Eurostars
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Call
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Eurostars Cut-Off 10
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Project partner
