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Home | MatelysMatelys is an independent research laboratory. Matelys expertise covers materials, acoustics, mechanics, thermodynamics and flow.
http://www.matelys.com/
Matelys is an independent research laboratory. Matelys expertise covers materials, acoustics, mechanics, thermodynamics and flow.
http://www.matelys.com/
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https://matelys.com
Matelys is an independent research laboratory. Matelys expertise covers materials, acoustics, mechanics, thermodynamics and flow.
SAPEM 2017, December 6-7-8, Le Mans
Ymposium on the A. December 6-7-8, 2017. Le Mans, France. 6 non-parallel sessions with 20-min talks are planned. The topics of this 2017's edition are:. Characterization and measurement techniques,. Materials with flow,. Special attention will be paid to reserving time for discussion. A poster exhibition will also be organized. 2017) : deadline for abstract submissions. Notification of acceptation for abstracts. Deadline for early registrations. Nov 17 is the deadline for registrations). Dec 6 to 8.
SAPEM 2014 - December 16-17-18, Stockholm.
December 16-17-18, 2014. The objectives of this 2014 edition was exploring multi-functionality. To present the most up-to-date developments in modelling, characterisation and applications of acoustic porous media,. To communicate the advances in acoustics of porous media research to adjacent disciplines concerned with material technology,. To discuss future challenges for this area of research. See you in Le Mans (France) during December 2017. Check http:/ sapem.matelys.com. C Kemp, G. Scavone. F Chevill...
SAPEM
Symposium on the Acoustics of Poro-Elastic Materials. To present the most up-to-date developments in modelling, characterization and applications of acoustic porous media,. To discover recent advances in adjacent disciplines,. To communicate the advances in acoustics of porous media research to adjacent disciplines,. To discuss future challenges for this area of research. ANY QUESTION OR REQUEST? Contact the organizing committee at:.
SAPEM 2005 - Welcome
Symposium on the Acoustics of Poro-Elastic Materials. December 7-8-9, 2005. ENTPE, Lyon, France. Proceedings are available on demand at sapem@matelys.com. 50 euros, shipping included). We invite you to join us at SAPEM 2008.
sapem2011
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SAPEM 2008 - Welcome
Symposium on the Acoustics of Poro-Elastic Materials. December 17-18-19, 2008, Bradford (UK). Thanks to our sponsors:. Feb 13, 2009: Proceedings are available. Please check your e-mails for login and password). Welcome to SAPEM 2008. SAPEM 2008 is over (since long). We invite you to join us during next edition of the Symposium on the Acoustics of Poro-Elastic Materials which will be held from December, 14th to December 16th 2011 in Ferrara (Italy). Check http:/ sapem2011.matelys.com. Should you experienc...
Home | APMR
Acoustical Porous Material Recipes. The aim of this site is to gather information and experience feedbacks about the published works in the field of acoustical porous material: models for the propagation of sound, parameter definitions and characterization techniques, standards. The content of APMR is growing day after day. Below are the subjects discussed or planned to be discussed. 8226; Motionless skeleton. 8226; Uniform pressure. 8226; Linking micro-structure to macro-properties. 8226; Open porosity.
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http://www.matelys.com/partners.html
Is an independent research laboratory. Materials, acoustics, mechanics, thermodynamics and flow. News and Upcoming events:. F-X Bécot has been elected to serve on the board of directors of the LUTB-RAAC association. Luc Jaouen will attend the next ISNVH. In Graz and present characterization methods for acoustical porous materials. F-X Bécot and Luc Jaouen will attend the next Internoise. In Hamburg and discuss about acoustical porous materials and standardization. You can also download our brochure.
Home | Matelys
http://www.matelys.com/index.html
Is an independent research laboratory. Materials, acoustics, mechanics, thermodynamics and flow. News and Upcoming events:. F-X Bécot has been elected to serve on the board of directors of the LUTB-RAAC association. Luc Jaouen will attend the next ISNVH. In Graz and present characterization methods for acoustical porous materials. F-X Bécot and Luc Jaouen will attend the next Internoise. In Hamburg and discuss about acoustical porous materials and standardization. You can also download our brochure.
Characterizations | Matelys
http://www.matelys.com/characterizations.html
Characterizations and source identifications are one of the pillars of our methodology. We develop these techniques and design setups to improve them. Quick access to our measurement services. Which follow characterization ones. For a multi-layer system, each layer should be characterized independently to identify its role in the dissipation of the whole system. Inner diameters: 46 mm and 30 mm). 3 microphone positions to estimate. Dynamic density and bulk modulus. Of underlay acoustical efficiency.
Publications | Matelys
http://www.matelys.com/publications.html
We build our reputation on the acknowledgement of our research skills by the academic world. Get an idea of our expertise by reading our peer-reviewed articles. Or our proceedings of conferences. Resulting mostly from internal R&D studies which occupy around 30% of our time. You can also check APMR. For a more digest. Presentation of our works in a historical context. On the modeling of visco-thermal dissipations in heterogeneous porous media. F Chevillotte, L. Jaouen, F.-X. Bécot,. O Dazel, F.-X....
Prescription | Matelys
http://www.matelys.com/prescription.html
We are at the interface between suppliers and customers, material developers and end users. You develop multi-functional applications and are seeking for a sound package? We can find the solution and the supplier or help you to build specification files. Design of a thin material for building applications. Material selection for innovative building applications. Design of multi-layer sound package for transport applications coping with multi-functional criteria. Selection of acoustic porous model from pr...
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Links
http://www.labs-project.org/links
Plenary meeting of the collaborative project Labs ( 02-07-2012/03-07-2012. 7th edition of the Automotive and Railroad Comfort Symposium in Le Mans ( 24-10-2012/25-10-2012. New version for partners ( 30-11-2012. Http:/ www.renault.com. Http:/ www.airbus.com. Http:/ uk.c-s.fr. Http:/ www.upmc.fr. Http:/ www.ens-lyon.eu. Http:/ www.gantha.com. Http:/ www.matelys.com. Http:/ www.u-psud.fr. Http:/ www.alstom.com. Http:/ www.systematic-paris-region.org. Http:/ www.pole-moveo.org. Http:/ www.paraview.org.
Partners
http://www.labs-project.net/partners
Plenary meeting of the collaborative project Labs ( 02-07-2012/03-07-2012. 7th edition of the Automotive and Railroad Comfort Symposium in Le Mans ( 24-10-2012/25-10-2012. New version for partners ( 30-11-2012. Http:/ www.renault.com. Http:/ www.airbus.com. Http:/ uk.c-s.fr. The partner of choice for our customers, we master the intricacies of. CS is a reliable industrial partner, acknowledged by its key customers for innovation, expertise, commitment and the service sense of its employees. Http:/ www...
Motionless skeleton models | APMR
http://apmr.matelys.com/PropagationModels/MotionlessSkeleton/index.html
Acoustical Porous Material Recipes. Propagation models assuming a motionless skeleton. When a porous material has a stiffness, or a weight, of order of magnitude much greater than the one of the air and if it is excited by an acoustic loading, at a frequency much higher than the phase decoupling frequency. The material skeleton can be considered as rigid and motionless. Wave equation for motionless skeleton models. Overview of the different motionless skeleton models. Here, the mean free path is the aver...
Johnson-Champoux-Allard model | APMR
http://apmr.matelys.com/PropagationModels/MotionlessSkeleton/JohnsonChampouxAllardModel.html
Acoustical Porous Material Recipes. The Johnson-Champoux-Allard model is based on the work by Johnson, Koplik and Dashen to desribe visco-inertial dissipative effects inside the porous media. The work by Champoux and Allard is used to describe the thermal dissipative effects. In 1987, Johnson Koplik and Dashen. Proposed a semi-phenomenological model to describe the complex density of an acoustical porous material with a motionless skeleton having arbitrary pore shapes. This expression is:. Widetilde{K}( ...
Open porosity | APMR
http://apmr.matelys.com/Parameters/OpenPorosity.html
Acoustical Porous Material Recipes. The open porosity, term commonly reduced to porosity, refers to the ratio of the fluid volume occupied by the continuous fluid phase to the total volume of porous material. The open porosity is usually identified by the greek letter $ phi$. However, in the original work by Biot, $h$ is used to denote this parameter. The open porosity can be directly measured. Beranek L. L., Acoustic impedance of porous materials. Schematic representation of an acoustical porous medium.
Static [viscous] permeability | APMR
http://apmr.matelys.com/Parameters/StaticPermeability.html
Acoustical Porous Material Recipes. The static permeability (or static viscous permeability to avoid confusion with the static thermal permeability. Is defined as the ratio of the dynamic viscosity of air over the static air-flow resistivity. It is usually identified by the symbol $k 0$ and its dimension in the international system of units is m$ {2}$ (i.e. it has the dimension of a surface). The mathematical definition of the static permeability, $k 0$, is:. K 0 = lim { omega rightarrow 0} k( omega) ].
Les PME du réseau Iroqua | Iroqua
http://www.iroqua.fr/node/87
Initiative de Recherche pour l'Optimisation acoustiQUe Aéronautique. Chercher dans ce site :. A propos d'Iroqua. R&D au service de la société. Iroqua et le Corac. Iroqua et l'Europe. Les PMEs du réseau. Le Comité de Coordination et de Pilotage. Les Feuilles de Route. Les PME du réseau Iroqua. La société JTT Composite. Nom d'utilisateur : *. Mot de passe : *. Créer un nouveau compte. Demander un nouveau mot de passe. Au fil de l'actualité. Airbus : sortie du premier A350 China Airlines (photos).
Johnson-Champoux-Allard-Pride-Lafarge model | APMR
http://apmr.matelys.com/PropagationModels/MotionlessSkeleton/JohnsonChampouxAllardPrideLafargeModel.html
Acoustical Porous Material Recipes. The Johnson-Champoux-Allard-Pride-Lafarge (JCAPL) model is based on the works by Johnson, Koplik and Dashen and Pride, Morgan and Gangi to desribe visco-inertial dissipative effects inside the porous media. The works by Champoux and Allard; Pride, Morgan and Gangi and Lafarge, Lemarinier, Allard and Tarnow are used to describe the thermal dissipative effects. Links with JCA and JCAL models. In 1987, Johnson Koplik and Dashen. Lambda$ and the static viscous tortuosity.
Wilson's model | APMR
http://apmr.matelys.com/PropagationModels/MotionlessSkeleton/WilsonModel.html
Acoustical Porous Material Recipes. In 1993, D. Keith Wilson proposed a propagation model based on the fact that the viscous and the thermal dissipations of an acoustic wave propagating through a porous medium can be described as relaxation processes. Which involves only 4 parameters, is developed to match the middle frequency behavior (or transition behavior, when the viscous and thermal boundary layers are of the order of the pore size) while models by Johnson, Koplik and Dashen. Ones can be found when...
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Matelyn Retirement Community | St. Paul, Nebraska
Matelyn Retirement Community 2017. 602 O Street, St. Paul, NE 68873. Quarterly Newsletter is in and ready to be mailed to YOU! If you are not on our mailing. https:/ t.co/qaE9GN1b4R. 602 O Street, St. Paul, Nebraska 68823. Matelyn Retirement Community 2017. This website is Certified Farmgrown.
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Home | Matelys
Is an independent research laboratory. Materials, acoustics, mechanics, thermodynamics and flow. You can also download our brochure. To have an overview of our services and products. News and Upcoming events:. Matelys is organizing with Vibratec. A presentation day on solutions for acoustic sound packages on April, 11 2018 at hotel Novotel, Massy Palaiseau (France). Program. An additional note is also available on APMR. In Besançon (France), April 9-11, 2018. Conference, May 7-9, 2018 in Ibiza (Spain).
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