Showing papers in "CIRP Annals in 2008"

TL;DR: In this article, the authors report the advances in the state of the art considering the relationships between the properties of functional surfaces, their applications and the technologies to engineer surfaces, and their applications in many advanced fields, such as: electronics, information technology, energy, optics, tribology, biology and biomimetics.

TL;DR: In this paper, the reference model for proactive action (RMfPA) is proposed to develop and implement sustainable manufacturing (CSM) at both the macro-meso-field level and the international level.

TL;DR: In this article, a unified measure and models of complexity to assist in designing systems with robust performances are proposed, where complexity is defined as an entropy function of product variety and models are developed to describe the complexity propagation in multi-stage assembly systems and multi-echelon supply chains.

TL;DR: In this article, a cutting force model with three dynamic cutting force coefficients related to regenerative chip thickness, velocity and acceleration terms is presented, which is based on controlled orthogonal cutting with a fast tool servo oscillated at the desired frequency to vary the phase between inner and outer modulations.

TL;DR: In this article, a closed-form theoretical analysis of the fundamentals of single point incremental forming is presented, which is based on membrane analysis with bi-directional in-plane contact friction and is focused on the extreme modes of deformation that are likely to be found in singlepoint incremental forming processes.

TL;DR: This paper identifies recent approaches to automating the manual optimisation process and the challenges that it presents to the engineering community.

TL;DR: In this article, a brief review of EDM and its use on advanced aerospace alloys including workpiece integrity constraints, data are presented after machining Ti-6Al-4V and Inconel 718.

TL;DR: In this article, a comprehensive survey of multi-functional machine tools used for metal cutting, and their kinematic configurations, control and programming technologies are discussed, taking examples of 5-axis machining centers.

TL;DR: In this article, a methodology is presented for determining the energy intensity and benefits of remanufacturing as compared to new manufacturing, and this is applied to a diesel engine example, which is used to estimate the embodied manufacturing/remanufacturing energy across multiple use cycles.

TL;DR: In this article, a case-based review of current disassembly practices is used to analyse the factors influencing disassembly feasibility and data mining techniques are used to identify major factors influencing the profitability of disassembly operations.

TL;DR: In this article, a theoretical model for cutting force prediction in micro milling, taking into account the cutting edge radius size effect, the tool run out and the deviation of the chip flow angle from the inclination angle, is presented.

TL;DR: A new, simple Carbon Emission Signature, CES™, is proposed, where Knowing the CES for a power grid and the energy needed to make a part, the carbon emitted can be found and a manufacturer can place a Green House Gas label on each product.

TL;DR: In this article, the influence of cutting process parameters on machining performance and surface integrity generated during dry turning of Inconel 718 and austenitic stainless steel AISI 316L with coated and uncoated carbide tools was presented.

TL;DR: In this paper, the authors measured the diameter of the arc plasma area where discharge current flows, radial temperature distribution in plasma generated by a single pulse discharge, and the area with high degree of ionization was determined.

TL;DR: In this paper, the dominant processes with a geometrically non-defined cutting edge are analyzed based on the position of hard finishing in the process chain of gear manufacturing, and the analyses of the processes include functionality, the development status, respectively, maturity as well as identifiable trends.

TL;DR: In this article, an analytical model able to take into account the diffusive wear mechanism was implemented through a specific subroutine, and an advanced approach to model heat transfer phenomena at the tool-chip interface was included in the numerical simulation.

TL;DR: In this paper, empirical, analytical, numerical as well as FEM-based methods describing the chip geometry and predicting the tool life and cutting forces have been developed to capture quantitatively the tool wear progress and the cutting loads.

TL;DR: In this article, a high-speed imaging system with a microscope lens and strobed copper-vapour laser illumination system enabled direct observation of the chip formation zone at a recording rate of 24,000-frames/s.

TL;DR: In this paper, the role of the main process parameters on material formability was investigated through a wide experimental campaign and a rigorous statistical analysis, with particular reference to formability limits.

TL;DR: In this article, the quantity of fluid required for grinding and the method of application were discussed and it was shown that supply flowrate needs to be 4 times the achievable useful flowrate.

TL;DR: In this paper, an experimental procedure based on Nakazima test for evaluating the formability limits in the hot stamping of high strength steel (HSS) is presented, which is capable of generating formability data suitable for an FE modelling of the process.

TL;DR: In this article, a superabrasive electroplated grinding wheel with a defined grain pattern for dry surface grinding operations is presented, with a special focus on the undeformed chip thickness.

TL;DR: In this paper, the authors present a general theory for analysis in the frequency domain and for any speed variation strategy for milling processes, compared with those obtained by semidiscretization and time integration.

TL;DR: In this paper, the authors present lessons learned from four years of work with industry on development of a methodology for Social Life Cycle Assessment and implementation in the industrial product chain, which supplements the traditional environment-oriented LCA and the life cycle costing tools in support of sustainability management addressing all three pillars of sustainability: people, planet and profit.

TL;DR: In this paper, the authors proposed ISCL, Integrated Service CAD and Life cycle simulator, which plays the role of CAD/CAE tools for product design in Product Service Systems (PSSs) design.

TL;DR: In this article, an enhanced analytic elasto-plastic model is presented using the superposition of thermal and mechanical stresses on the workpiece, followed by a relaxation procedure.

TL;DR: In this article, a method for determining modular structure by aggregating various attributes related to a product life cycle and evaluating geometric feasibility of modules is proposed, and a prototype system that implements the proposed method and a case study of a printer is presented.

TL;DR: In this article, simple analytical models of 3D elliptical vibration cutting are developed in order to simulate the cutting process quickly and to understand the basic mechanics, and the basic cutting mechanics are discussed in the present research.

TL;DR: In this article, a warm and hot punching method using resistance heating was developed to improve the quality of sheared edges of an ultra high strength steel sheet and reduce the punching load.

TL;DR: Dieless clinching as discussed by the authors is a new clinching method that works with a flat anvil as a counter tool, thus offering important benefits for the joining of magnesium parts, and it is possible to decrease the heating time to 1/s or less, instead of 3/6/s with conventional clinching methods.