Concepts are proposed to improve the computer support in the (re)design of mechanical products. These concepts are combined with a proposal for an improved link between CAD and CAPP systems. The concepts resulted from a methodic design approach aiming at the design of a re-design support system. Findings from literature, previously conducted research and an object oriented design approach have ...

This work describes the implementation of an integrated web-based CAD/CAPP/CAM system for the remote design and manufacture of feature-based cylindrical parts. This system, called WebMachining (http://webmachining.alvarestech.com), was developed in an e-manufacturing context, and the use of features allows the integration among the activities of collaborative design (WebCADbyFeatures), generati...

non-destructive ultrasonic testing is one of the methods utilized to evaluate quality of agricultural produce. transducers used in this method are made for basically industrial applications. since ultrasonic attenuation of waves in agricultural produce is very high, industrial transducers cannot be used in agriculture and needs to be modified. this is done with horns that concentrate energy on ...

A feature is a local shape of a product directly related to the manufacturing process. In the computer aided process planning, information on manufacturing is essential. To get the manufacturing related information from CAD data, features should be recognized. In this paper, we thoroughly investigate the composite features, which consist of interacting simple features. The simple features in th...

Laser-based multi-directional metal deposition (LBMDMD) is a very effective way of fabricating a part directly from its digital model. The method, however, requires a lot of human intervention during the process planning. Driven by already developed expert systems for the process planning in Computer Aided Design (CAD) and manufacturing, this paper intends to suggest a task framework for the au...

In this paper, a novel method for incorporating automatic, patient-specific, structural analysis in computer-aided preoperative planning is described. Special emphasis has been placed on accurately capturing the mechanical behavior of the implant-to-bone interface where failure may occur. A finite element solver was developed and integrated into our computer-aided planning system for implant de...

This work presents a description of the implementation of the WebMachining methodology and system (http://WebMachining.AlvaresTech.com) developed in a context of e-Mfg, aiming at integrating CAD/CAPP/CAM for the remote manufacturing of cylindrical parts through the Internet. The methodology and its implementation are conceived starting from the modelling paradigm based on synthesis by design fe...

Although current CAD systems are declared to be feature-based, in fact, the so-called feature is just a modeling macro or menu name such as Protrusion, Revolution, Cutout, Block, etc., instead of a design feature or manufacturing feature in accordance with engineering practice. Consequently, product model data insufficiency and incompatibility between varieties of application systems are still ...