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Download PDF by M. Marcos, J. A. Sanchez, J. Salguero: Advances in Non Conventional Materials Processing

By M. Marcos, J. A. Sanchez, J. Salguero

ISBN-10: 3037853573

ISBN-13: 9783037853573

ISBN-10: 3038136735

ISBN-13: 9783038136736

This paintings provides the latest Advances in Non-Conventional fabrics Processing applied sciences awarded on the 4th production Engineering Society overseas convention (MESIC2011), held in the course of September 2011 in Cadiz, Spain. the following, Forming, Simulation, Laser, Water-Jet, fast Prototyping, WEDM, Grinding and Additive production applied sciences are, between others, the most subject matters to be present in this e-book, that is aimed specially at production engineers who paintings within the above fields.

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Extra resources for Advances in Non Conventional Materials Processing Technologies

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Fig. 2b shows the flow stress of the AA5083 as a function of both the temperature and the deformation. This flow stress has been employed in the simulations. The boundary conditions set were no displacements permitted in both x and y (at the bottom of the lower die), fixed displacements at the upper nodes of the upper die with a displacement of 8 mm in the negative direction and convection at the whole external surface both for the billet and the dies. 25 Tresca friction coefficient was employed [8] as well as an initial boundary condition of total equivalent plastic strain equal to two, as the material had been processed twice by ECAE.

The use of fiber reinforced polymer (FRP) composites in the aircraft and automotive industries exponentially. Reinforced fibers which are abrasive in nature make it hard to machine by the traditional machining. Dissipation of heat into workpiece which in turn results in enhanced cutting tool wear and damage to the workpiece is the common problems faced in traditional machining of FRP’s. Nontraditional machining is favorable to reduce these issues. Abrasive waterjet machining (AWJM) is one of the best choices for machining FRP’s.

The model is based on the energy conservation approach and uses the dimensional technique to formulate a semi-empirical relationship between the process parameters and the kerf taper angle [1]. The experimental results and predicted values show a very good correlation. 5g/s≤ ma ≤10g/s. Additionally, it is limited to AWJM of glass/epoxy and graphite/epoxy. The prediction of surface roughness modeled by Azmir and Ahsan [13] focusing on AWJM of glass/epoxy. The methodology used was piecewise linear regression with breakpoint and yielded a model for Ra in the form [13] (3) Where Ra is in µm, Hk is the abrasive particle hardness (Knoop), Sd is in mm, ma is in g/s, Vt is in mm/s, sf is in MPa, Vf is the fiber volume fraction (%), h is in mm, and P is the jet pressure in MPa.

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Advances in Non Conventional Materials Processing Technologies by M. Marcos, J. A. Sanchez, J. Salguero

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