Showing papers in "Journal of Materials Processing Technology in 2000"

TL;DR: The most widely applied methods for the production of composite materials and composite parts are based on casting techniques such as the squeeze casting of porous ceramic preforms with liquid metal alloys and powder metallurgy methods.

TL;DR: In this paper, the authors present recent developments in the dry machining operation and discuss the benefits of using cutting fluids for green machining, and also point out that some benefits of cutting fluids are not going to be available for dry machine and also dry machinings will be acceptable only whenever the part quality and machining times achieved in wet machining are equalled or surpassed.

TL;DR: In this article, the combination of these aspects in one material is an extraordinary achievement, and it shows that GLARE is a unique material for aircraft applications, and that it is a strong candidate material for fuselage skin structures of the new generation of aircraft.

TL;DR: In this paper, a review of squeeze casting in all its aspects: its origins and developments, various processes and equipment involved including the major parameters; metallurgical features including porosity, recrystallisation and grain refinement; mechanical properties of the products; the mechanics of the different processes, and the advantages and disadvantages of different processes.

TL;DR: In this paper, the authors consider adhesive bonding and mechanical fasteners as potential techniques for the joining of spaceframe components in volume production and conclude that a combination of techniques could be used to great effect.

TL;DR: In this article, a neural network model for predicting the quality or soundness of injected plastic parts based on key process variables and material grade variations has been developed using a backpropagation 4-2-3 net (BPN) trained based on inputs/outputs data.

TL;DR: In this article, the role of rapid prototyping technology in increasing the speed of tooling development is described and a comprehensive review of examples of rapid tooling indicates a major shift in tooling practice.

TL;DR: In this article, the application of the Taguchi method with fuzzy logic for optimizing the electrical discharge machining process with multiple performance characteristics has been reported, where a multi-response performance index is used to solve the Electrical Discharge Machining Process with Multiple Performance Attributes (EDMP) problem.

TL;DR: In this paper, a survey of second-order size effects that can be expected in tensile testing, air bending and punching of sheet metal can be found, and these size effects show to be commensurable when the process conditions are similar to a certain amount.

TL;DR: In this paper, the authors present a 3D model for the numerical simulation of the deep-drawing process taking into account the large elastoplastic strains and rotations that occur in the deep drawing process.

TL;DR: In this article, the fundamentals of tube hydroforming technology and how various parameters, such as tube material properties, pre-form geometry, lubrication and process control affect product design and quality are discussed.

TL;DR: In this article, the performance and the wear mechanisms of coated carbide tools have been investigated when face milling titanium alloy, Ti-6Al-4V, and two tools used were PVD-TiN and CVD−TiCN+Al2O3 coated.

TL;DR: In this paper, the machining characteristics of titanium alloy were investigated using a combination process of electro-discharge machining (EDM) with ultrasonic machining, which can increase the material removal rate (MRR), electrode wear rate (EWR), relative electrode wear ratio (REWR), surface roughness and thickness of recast layer.

TL;DR: In this article, a revised micro-slit EDM process using different dielectric fluids is presented, and the effects of various fluids used during the machining process are quantitatively and qualitatively measured.

TL;DR: In this article, the chip cutting milling of two alloys that are used frequently in the aerospace industry, in particular the titanium alpha-beta-based alloy Ti6Al4V and the nickel alloy usually known as type 718, is investigated.

TL;DR: In this paper, the authors evaluated the use of activated flux TIG (ATIG) welding for the austenitic stainless steels with fluxes of only one major component and found that even the very simple flux that was used can greatly increase the penetration of the weld bead.

TL;DR: In this paper, the authors present a brief overview of HSC technology and present current progress in high performance machining of cast iron and alloy steels used in die and mold manufacturing.

TL;DR: In this paper, a technology selection algorithm to quantify both tangible and intangible benefits in fuzzy environment is presented, where decision-makers are asked to express their opinions on comparative importance of various factors in linguistic terms rather than exact numerical values.

TL;DR: In this article, solid and liquid-state welding techniques, including the conventional automotive method of spot-welding, in the context of their applicability to aluminium spaceframe structures are reviewed not only in terms of the physical properties of the joint produced, but also with due consideration to production issues pertinent to the automotive industry.

TL;DR: In this article, the authors compared the performance of the implicit and explicit methods for several dynamic problems including the impact of an elastic bar and a cylindrical disk on a rigid wall.

TL;DR: In this paper, a constitutive equation is used successfully to describe the dynamic impact deformation behavior of 7075 Al alloy, considering the effects of strain rate, temperature, strain hardening, rate sensitivity and thermal softening of the material.

TL;DR: In this article, the machining performance of titanium alloys using CBN tools was evaluated in terms of cutting force, specific cutting pressure, cutting temperature, chip strain and surface finish.

TL;DR: In this article, the machining of a SiC-reinforced aluminum metal-matrix composite (MMC) with diamond inserts is presented, and two types of commercially available diamond tools are examined: brazed polycrystalline diamond (PCD) tools; and chemical vapor deposition (CVD) diamond coated tools.

TL;DR: In this article, a more general formulation, the arbitrary Lagrangian-Eulerian (ALE) method may be used to combine the advantages and avoid the shortcomings of both of the previous methods.

TL;DR: In this paper, a brief historical overview of numerical simulation of sheet metal forming is given, and a comparison between bulk and sheet metal formation processes from the simulation point of view is given.

TL;DR: In this article, the blind hole drilling of Al2O3/6061Al composite using rotary electro-discharging machining by using Taguchi methodology has been investigated and three observed values, MRR, EWR, and SR, verify this optimization of the machining technique.

TL;DR: In this article, a piezoelectric inertia actuator is mounted on the cutting tool and acted as a tuned vibration absorber for the suppression of chatter in turning operations.

TL;DR: In this paper, the advantages of using an evacuated die cavity during mould filling were evaluated ASTM standard die casting tensile specimens of three Al alloys, Al-5%Si, Al 8%Si and Al 18%Si.

TL;DR: In this article, the relationship between cutting forces and tool wear of polycrystalline diamond (PCD), measured when machining the composite A356/20/SiCp-T6 (aluminium with 7.0% silicon, 0.4% magnesium reinforced with 20% particles of silicon carbide (SiC); heat treatment: solutionising and ageing T6 for 5h at 154°C).

TL;DR: In this paper, a review of different models for computing the changes in flow stress depending on the deformation conditions is presented, and the models are divided into two main groups, each of them characterised by a different set of deformation parameters.