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pu panel
31/10/2011
11:24
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İsim : ümit
Sipariş Miktarı : 8 metireye 13 metre
E-Mail : unalbims@hotmail.com
Telefon : 05413703050
İl : ADANA
Adres : kaymakli kasabası belediye caddesi no85 nevşehir
Kargo Tercihi : kapodokya
Mesaj : selam
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pu panel
20/03/2011
23:50
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Ürün Adı : Taş Yünü Dolgulu 5 Hadveli Çatı Paneli
URL : http://www.sandwichpanelfiyatlari.com/?newUrun=1&Id=190701&CatId=bs115727&Fstate=
İsim : osman çiftci
Talep Olunan m2 : 4000
Telefon : 05337944953
İl : NEVSEHIR
Adres : organize san . nevşehir
Panel Uzunluğu : 12
Panel Kalınlığı : 0.40
Mesaj : slm mevcut vatımızdaki trapez sacı sökerek sandiviç panel yapmak istiyoruz..
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pu panel
12/03/2011
10:23
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14.25(özel ölçü)*1300 ve 10*8000 metrekare olmak üzere toplam 9300 m sandviç çatı paneline ihtiyacımız vardır. konuyla ilgili tekliflerinizi mail yoluyla bildirmenizi rica ederim.
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pu panel
12/03/2011
10:23
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3600 metrekare alt 0,40 mm galvanezli sac üst 0,50 mm galvenezli sac36/42 dansite yoğunlukta poliüretandolgulu üç hatveli çatı paneli aras 40 mm ve 50 mm için teklif istiyoru |
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pu panel
02/03/2011
23:01
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Plascore Board
Stronger, Stiffer, Lighter
Plascore Board™ is a lightweight, structural composite sandwich panel designed to add strength to primary and secondary structures ... while saving time and reducing labor on the production floor. Plascore Board is manufactured to tight tolerances and is easy to cut, shape and drill. Available in a range of honeycomb cores with performance facings, Plascore Board offers an exceptionally high strength-to-weight ratio, making these value-added sandwich panels an ideal substitute for Plywood and OSB in applications where weight reduction is required.
Designed to add value in OEM Product manufacturing, Plascore Board panels are available cut to a custom size or shape, or in a standard sheet size of 48" x 96" in a thickness of ½", ¾" and
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pu panel
02/03/2011
23:00
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As a note of interest; 'End-Grain Balsa wood' (Balsa is the stuff used for model airplanes) makes for the stiffest and most shear resistant cores known in boatbuilding. It also shows superior compressive and bonding strength to the skins. Of course, it doesn't mean that it is the best choice in all situations. Some cores are less stiff which makes for better impact absorption.
The point here is that despite advances in material science, the 'Good old wood' is still up there with the most sophisticated materials used today.
As far as cedar wood strip core is concerned, it has its own unique advantages that no other core has.
It is cheap (commercial cores are notoriously expensive)
It is self-supporting (NO other core is able to form fair compound surface when wrapped over a mold with 12" to 18" station spacing). All commercial cores need close spaced forms or solid surface plugs so that they don't sag.
No special skills or tools are required to build a professional looking kayak with wood strips.
For this reason, wood strips are the ultimate core material for prototyping and builders wanting 'cheap & quick' boats. The Wood Core Kayak page goes into more detail about its virtues.
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pu panel
02/03/2011
23:00
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The core in this illustration would be the equivalent of the deck of cards glued together. The material resists shear (high Shear Modulus) very well. Note that the sections throughout the core are perpendicular to the neutral axis (dashed red line).
This means that the 'layers' in the core resists sliding (shear deformation) and the core and skins are forced to stretch and compress.
Skins made of material of high 'Modulus of Elasticity' are best used in conjunction with cores of high 'Shear Modulus'. This balance is important so that neither material fails long before the other is stressed to acceptable level.
For instance, strong Graphite or Kevlar skins bonded to a 'Styrofoam insulation' core would be a complete waste because such 'Low Shear Modulus' core would always fail long before the skin could be stressed to 1% of its potential strength. Of course, for this reason Styrofoam is not considered a structural core material.
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pu panel
02/03/2011
23:00
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Unlike the simple beam, which is designed to withstand stresses mostly along the x axis and bending about the y axis, the sandwich panel can be stressed along and about any axis laying in the x-y plane. The implication is that such panel can extend 'infinitely', forming a strong and continuous self-sustaining plate or shell such as a wood strip kayak. No reinforcing elements are needed because they are already built into the structure.
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The Core
The easiest way to illustrate how the core supports shear stresses is to take a deck of cards or a telephone book and bend it. You will notice how the individual layers slide or 'shear' past each other.
Now, suppose that the sheets were all glued together. The pages are no longer free to move and the deck becomes very stiff. At this point, the only way the deck could bend is if the layers on the 'tension' side of the 'neutral axis' (red dashed line) stretched and the 'compressed' side squeezed together.
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This picture illustrates the shear in a weak core such as the unglued deck of cards or a sheet of elastic material like rubber.
The skins experience very little stress because the core deforms easily. Such cores are said to have low 'Shear Modulus of Elasticity'
Materials with very low Shear Modulus are unsuitable as structural cores because they cannot withstand shear stress. Boats made with such cores would be weak, excessively flexible, and easily deformed. This would defy the whole point of this construction.
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pu panel
02/03/2011
23:00
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Composite Sandwich Core
This page will attempt to shed some light on the mechanics of composite sandwich panels. The main points will illustrate:
the structure of a 'Composite sandwich panel'
the role of the skin and core in resisting loads
the distribution of forces in such panel (bending only)
why composite sandwich cores are stiffer and stronger than the same weight single skin panels.
examples of 'modes of failure' and buckling in composite core panels
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This page is intended for those who do not have any engineering background but would still like to get a peek at the inner workings of sandwich cores.
Derivations of Flexure formulas, Moments of Inertia and other complexities are beyond the scope of this page. A lot of assumptions are made for the sake of simplicity. All cross sections are symmetrical about a neutral axis(centriod) and the material is subject to pure bending(flexure).
The best way to visualize the structure of a 'sandwich core panel' is to use the analogy of a simple "I" beam. (see above)
Like the 'I' beam, a sandwich core panel consists of strong skins (flanges) bonded to a core (web). The skins are subject to tension/compression and are largely responsible for the strength of the 'sandwich'. The function of the core is to support the thin skins so that they don't buckle (deform) and stay fixed relative to each other. The core experiences mostly shear stresses (sliding) as well as some degree of vertical tension and compression. Its material properties and thickness determine the stiffness of such a panel.
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pu panel
02/03/2011
22:59
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Otro punto importante del proyecto es implementar un sistema de divulgación de la información que sea fácil y práctico y que llegue a todos los públicos. Se van a realizar seminarios, guías prácticas y cursos mediante “e-learning”.
Los puntos que se van a estudiar en el proyecto tienen un gran interés práctico tanto para los fabricantes como para los usuarios. Se van a publicar guías prácticas de temas que no están dentro la actual versión de la norma pero que como hemos dicho, se introducirán en su revisión.
El proyecto EASIE, con las guías y los seminarios que se van a realizar, ayudará a augmentar y mejorar el uso de los paneles tanto en Europa como en la ICPC.
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pu panel
02/03/2011
22:59
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Los paneles sándwich son productos aislantes que por sus características se utilizan principalmente para la construcción de fachadas y cubiertas ligeras. Están compuestos por dos chapas metálicas con un núcleo de material aislante. El usos de los paneles sándwich está creciendo constantemente y el abanico de sus aplicaciones en la industria, a nivel residencial y en edificios de oficinas se va ampliando.
La norma europea para paneles sándwich, EN14509, tienen alguna laguna en lo que respeta los requerimiento ante las fijaciones de los paneles, las aberturas en los paneles, las cargas axiales y la estabilización de las estructuras con paneles. No es que no se tenga información sobre estas propiedades, sino que cada país de la Comunidad Europea tiene sus estudios y se rige con sus normas. Esto hace que aún existan barreras importantes entre los países...
El objetivo principal del proyecto EASIE es solventar estos problemas y desarrollar soluciones y guías técnicas, que más adelante se utilizarán en la revisión de la norma EN14509, que se publicó en Diciembre de 2008.
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pu panel
02/03/2011
22:59
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projekt további célja, hogy a létrehozott új gyakorlati információkat és tapasztalatokat szemináriumokon, konferenciákon, kiadványokon valamint egy Interneten keresztül elvégezhető e-tanfolyamon keresztül közvetítse. A projekt olyan irányelveket fog bemutatni, amelyek a jelenlegi szabványokban nem szerepelnek, de az elvégzett kutatásoknak köszönhetően a módosított verzióban már jelen lesznek. A projekt témájában érdekeltek az ipari, a lakossági és a közületi felhasználók is.
Razmatranje utjecaja karakteristika otpornosti poput posmične i aksijalne otpornosti na stabilizaciju panela, novosti su ovog projekta.
A téma gyakorlati szempontból azért rendkívül fontos, mert a különböző útmutatók és szemináriumok elősegítik a szendvicspanelek megfelelő és biztonságos használatát nemcsak Európa-szerte, hanem a Nemzetközi Társult Partner Országok (ICPC) tagállamaiban is. A projekt feladatai között olyan alkalmazások is megtalálhatóak, mint a belső nyírásra vagy a tengelyes ellenállásra vonatkozó technikai újítások.
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