IPROMS 2009

Rapid Manufacturing for Mass Customisation

Vlado — Fri, 26 Jun 2009 15:13:01 +0100

Authors: Daniel Eyers, Krassimir Dotchev

Abstract

The achievement of Mass Customisation in manufactured goods has been identified as desirable to effectively address individual customer preferences, and also to promote business competitiveness in changing markets. This paper presents a technical appraisal of the technologies of Rapid Manufacturing applicable to Mass Customisation, emphasising the presentation of specific technologies from a materials perspective. To demonstrate the suitability of particular techniques, two case studies from c

Performance Enhancement Based-Adaptive Sliding Mode Assisted-Recursive Maximum Likelihood Estimator for Sensorless Control of Li

Vlado — Fri, 17 Jul 2009 12:01:01 +0100

Authors: Abdulkhader Joukhadara, Duc Truong Pham, Yehya dadam, Zakria Mahrousa

Abstract

The present paper investigates the performance enhancement of a novel sliding mode assisted-recursive maximum likelihood estimator (SM-RMLE) for sensorless linear motion control. The most significant advantages of the developed SM-RMLO are its applicability to on-line state estimation, system parameter identification and capability for fast parameter convergence. Vector control of permanent magnet linear synchronous motor (PMLSM) is used.

Influence of friction, punch depth and shape factor on forces in Localized-Incremental Forging operations

Vlado — Thu, 02 Jul 2009 16:31:02 +0100

Authors: ANA MARIA CAMACHO, CARPOFORO VALLELLANO, JAVIER GARCIA-LOMAS, MIGUEL ANGEL SEBASTIÃN

Abstract

Incremental bulk forming processes have emerged like an alternative technology opposite to some conventional processes in metal forming industry. Accordingly, research in incremental forming is necessary to ensure their competitiveness. In this study some Localized-Incremental Forging operations have been analyzed by the Finite Element Method in order to improve the understanding and assessment of these processes.

Managing multi-site production projects by a distributed and interoperable architecture

Vlado — Fri, 26 Jun 2009 15:13:01 +0100

Authors: Karim ISHAK, Bernard ARCHIMEDE, Philippe CHARBONNAUD

Abstract

Management of multi-site production projects became a critical and difficult task due to the distribution aspect of the decision making and the heterogeneity that can exist between production systems and applications used by the various partners. In this article, SCEP-SOA, an interoperable and distributed architecture to manage multi-site production projects is proposed. Based on the Service Oriented Architecture and integrating concepts of the generic model SCEP (Supervisor, Customer, Environment, and Producer), this architecture enables applicative interoperability between heterogeneous production systems.

Use of Bees Algorithm (BA) and Particle Swarm Optimisation (PSO) for energy demand in Iran's power plants modeling

Vlado — Fri, 26 Jun 2009 15:13:09 +0100

Authors: Afshin Ghanbarzadeh, Mohammad Ali Behrang, Ehsan Assareh

Abstract

Comparison of the Bees Algorithm and Particle Swarm Optimisation abilities on energy demand estimation in Iranâ€™s power plants, using the structure of the Iranian industry and economic conditions is the main objective of this study. This study develops a scenario to analyse energy consumption and make future projections based on Bees Algorithm (BA) and Particle Swarm Optimisation (PSO) methods. The models developed in linear forms and applied to the energy demand of Iran's power plants. The BA and PSO demand estimation models (BA-DEM and PSO-DEM) are developed to estimate the future energy demand values for Iranâ€™s power plants based on population, gross domestic product (GDP), electricity production and electricity price figures. Energy consumption in Iranâ€™s power plants from 1981 to 2005 is considered as the case of this study. The available data is partly used for finding the optimal, or near optimal, values of the weighting parameters (1981-1999) and partly for testing the models (2000â€“2005). Energy demand in Iranâ€™s power plants is forecasted up to year 2030.

Autonomous swing up of a robot gymnast

Vlado — Thu, 02 Jul 2009 11:23:25 +0100

Authors: Eldaw Eldukhri, Duc Pham, Ashraf Fahmy, Nikolay Zlatov

Abstract

In this paper the problem of swing up control of an under-actuated, three-link robot gymnast (Robogymnast) is discussed. Robogymnast mimics the human acrobat who hangs from a high bar and tries to swing up to an upside-down position with his/her hands still on the bar. Unlike human acrobats, Robogymnast's hands are firmly attached to a freely rotating high bar mounted on ball bearings. Although this helps during the swing up phase, it poses a great challenge to balancing the robot at the upright position. The motion of Robogymnast was initiated by applying regularly changing sinusoidal torques to the two motors located at its shoulder and hip joints. As the swing angle increases, the amplitudes of the applied sinusoidal torques were increased while their respective frequency was reduced proportionately. Experimental results showed successful swing up of Robogymnast to the inverted configuration.

Analysis of the environmental impact for a turning operation of AISI 1040 steel

Vlado — Fri, 26 Jun 2009 15:13:04 +0100

Authors: Gianni Campatelli

Abstract

When the need to reduce the environmental impact of a product became a necessity often the designer starts with a study to change the material of the product or the technology used for the production. However these solutions require important change in the manufacturing plant and large money investment. Another solution, often underused, is the optimization of the already used technology choosing the best process parameters configuration from a sustainable point of view. The sustainability means that the production has to be not only characterized by a low environmental impact but also profitable for the manufacturer.

Inkjet printing for Rapid Manufacturing: Printing towards the future

Vlado — Fri, 26 Jun 2009 15:13:04 +0100

Authors: Rene Houben, Leon Brouwers, Andre Rijfers, Michiel Willemse

Abstract

Rapid Prototyping has evolved to Rapid Manufacturing. A dot matrix printer has evolved to full colour inkjet. Can both worlds be combined to form end products that do not only contain colour but contain different material classes. Even gradients in material properties can be foreseen. TNO has brought inkjet to the next level by enabling the usage of higher viscous materials. This brings production of graded end products within reach. Softwar

A bee colony optimization algorithm with the fragmentation state transition rule for traveling salesman problem

Vlado — Mon, 13 Jul 2009 12:31:01 +0100

Authors: Li-Pei Wong, Malcolm Yoke Hean Low, Chin Soon Chong

Abstract

The Traveling Salesman Problem (TSP) is an NP-hard problem that has been used as a significant testing ground for many algorithms. It is also a problem that appears in many real industrial settings. This paper describes a Bee Colony Optimization (BCO) algorithm with a fragmentation state transition rule (FSTR) for TSP. The FSTR in the BCO algorithm helps bees to produce a tour by combining a few fragments of cities. Previously in [1,2], the authors suggest that bees have to travel from one city to another city in order to build a complete tour.

An experimental and statistical study of the factors affecting surface roughness in the micromilling process

Vlado — Wed, 02 Sep 2009 11:31:01 +0100

Authors: Ahmed Elkaseer

Abstract

This paper investigates the parameters affecting the roughness of surfaces produced in the micromilling process for two different materials Al5083 and Cu99.9E. Each material has two microstructure levels, coarse grained (CG) and ultra fine grained (UFG).
Three parameters were selected for study: cutting speed, feed per tooth and material microstructure. For Al5083, a full-factorial design was conducted to plan experiments for a statistical analysis of the influence of these parameters on the generated surface roughness.