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Metal Sheets (metal + sheet)
Selected AbstractsParticle Bleeding of Precoat Layers on Slotted Metal Sheets and Dutch WeaveCHEMICAL ENGINEERING & TECHNOLOGY (CET), Issue 1 2005M. Rainer The separation mechanisms of the filter aid particles without the influence of an overlaid suspension filtration are investigated. The differences of filtering precoat layers on different filter media are discussed and their effects on precoat particles in filtrate are shown. The horizontal flow velocity component causes a stabilization of the particle bridges close to the supporting filter medium and lowers the filtrate concentration of particles originated in the precoat layer. [source] Estimating Projectile Perpendicular Impact Velocity on Metal Sheet Targets from the Shape of the Target HoleJOURNAL OF FORENSIC SCIENCES, Issue 1 2009Tsadok Tsach M.Sc. Abstract:, The correlation between bullet hole shapes in metal and projectile impact velocity was examined. A series of shots were fired from an M-16A1 assault rifle of 5.56 mm caliber toward a 1-mm thick metal target. All shots were fired at a perpendicular angle to the metal sheets, and the velocity was measured just before the projectile hit the target. Velocities ranged between 400 and 900 m/sec. From the replica of the shooting hole, a perpendicular plane was created, showing the symmetrical properties of the hole. The best mathematical equation describing the shape of the entrance hole was the exponential function in the form: The empirical equation of the hole defined using the regression method is: This equation describes the general shape of shooting holes created by velocities ranging from 440 to 750 m/sec. From this equation, one can estimate the bullet velocity when it hits the target. [source] Increasing stable deformation by declining temperature during the processMATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, Issue 4-5 2008J. Ziegelheim Abstract Recently increasing amount of light metal sheets, especially based on magnesium, is being involved into various structural constructions and functional components. Such a rising trend can be observed, for instance, at automotive, aerospace and electronic industry. On the other hand there exist some processing difficulties, such as forming limits, caused by crystalline structure. To make processing of magnesium materials most reasonable with a maximum economical and material's effect, detailed investigation of the material's mechanical behavior is necessary to realize. Especially, an use of superplasticity is a point of the main interest. By optimum settings of the deformation process (especially temperature and strain rate) the superplastic conditions were determined optimally. Moreover, it was discovered that variable temperature very positively affects the superplasticity of magnesium materials. Actually by changing temperature conditions during the deformation, even higher level of superplastic deformation without rupture can be obtained. This very interesting fact was observed at the elevated temperatures that decrease almost constantly during the deformation process. Thus previously widely used constant temperature treatment opens door to the dynamic problems of searching for the optimal temperature gradient and its variation. [source] Modelling of thin polymer filmsPROCEEDINGS IN APPLIED MATHEMATICS & MECHANICS, Issue 1 2005Michael Johlitz If we bond substrates like metal sheets by a thin polymer film we know about the existence of a boundary layer between the polymer and the substrate. The properties of this boundary layer differ from the bulk properties and influence the overall behavior of the bond. Here we present a mechanical theory based on a scalar-valued order parameter that allows us to describe these effects. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source] | ||||||||||