A lot of research made during these last 15 years showed that the quantification of the springback has a significant role in the industry of sheet metal forming. These studies were made with the objective of finding techniques and methods to minimize or completely avoid this permanent physical variation. Moreover, the use of steel and aluminum alloys in the car industry and aviation poses every...

-The Rice-Thomson model is used to predict the directional toughness of a copper/sapphire interface, consisting of a {221 } face of a copper crystal bonded to a basal sapphire surface. Specimens of this type are subsequently tested, in the form of a layered beam (having two opposing cracking directions) subject to four-point bending and confirm the theoretical predictions. A general observation...

the spline finite strip method (s.f.s.m.) for buckling analysis of plates and plate assemblies subjected to longitudinal compression and bending, transverse compression as well as shear is described. the method allows for the boundary conditions. local buckling coefficients of plates with different boundary conditions under compression, bending and shear are calculated. convergence studies with...

This article aims to investigate the influence of different contact conditions on friction properties an Nb-stabilized AISI 430 ferritic stainless-steel sheet with deep drawing quality. Three tribological tests were performed: pin-on-disk, bending under tension, and strip-tension test. Moreover, counter samples a hard metal (WC-12%Co) surface finishes 0.27 0.54 ?m used in dry lubricated conditi...

Neural tube closure is a fundamental embryonic event whose molecular regulation is poorly understood. As mouse neurulation progresses along the spinal axis, there is a shift from midline neural plate bending to dorsolateral bending. Here, we show that midline bending is not essential for spinal closure since, in its absence, the neural tube can close by a 'default' mechanism involving dorsolate...

Single point incremental forming is one of the most intensely researched die-less manufacturing process. This process implies usage a CNC equipment or serial robot which deforms sheet metal with help relatively simple tool that follows an imposed toolpath. As every cold process, besides many given advantages it has also some drawbacks. One big drawback in comparison other processes low accuracy...

es ist mehr als 100 jahre, das auf der welt die gewinnung von eisen und stahl auf basis von roheisenerzeugung im hochofen erfolgt, in letzten jahren sind die moglischkeiten zum eisengewinnung mit reduzierenden gasen auf verschiedenen verfahren untersucht und zum teil breits in halbtechnischen versuchsanlagen erprobt. in dieser arbeit wird em uberblick auf samtlichen eisengewinnungsver, fahren s...

in this study, the microstructure and properties of foam glass obtained as a result of the interaction of the waste glass with sic as the foaming agent and fe2o3 as the oxidizing agent have been investigated using scanning electron microscopy (sem), as well as three-point bending and pycnometery tests. first, the temperature and optimized amount of sic for making foam glass was determined. the ...

Zusammenfassung Das Treiben ist ein Metallbearbeitungsprozess durch Hämmern in kaltem Zustand, durch den bei Nutzung unterschiedlicher Werkzeuge fast jede beliebige Geometrie von 2Dund 3D-Blechen hergestellt werden kann. Die Ausführung der Schläge geschieht heute maschinell, wobei die Verformungswirkung eines einzelnen Schlages durch zahlreiche Parameter des Werkzeugs und des Bleches beeinfluss...

The present study investigates the effects of process parameters on cold forming an automotive component in AISI 1006 low carbon steel. material formability was characterised up to 250°C. flow behaviour and related thermal distributions during geometrical transformations were analyzed. Coining operations investigated by using a coupled 3D Thermo-mechanical FEM with different die geometries fric...