Design For Manufacturing Methodology Research Articles

Cyber-enabled concurrent material and process selection in a flexible design for manufacture paradigm

This paper presents a cyber design for manufacturing (DFM) framework for concurrent material and process selections. An internet-of-things (IoT) interface is developed wherein design, material, and process databases are accessed in a cloud-based environment. Digital designs are processed to extract dimensional features and functional requirements. A Node-RED IoT simulator is developed to provide seamless interconnectivity to translate design specifications with material and process databases via web sockets. The output from the cloud system is incorporated within a decision-making algorithm. The analytical hierarchy process (AHP) is implemented where alternatives are hierarchically compared to generate weights based on combinatorial order ranking of the designer preferences. A material-process index (MPI) is developed that integrates the material and process generated weights with material-process compatibility for selecting the optimal material and process combination. The proposed methodology is applied to an electrical power distribution interchangeable fuse cutout system to validate the approach. Material and processes are selected on a standalone basis without considering their compatibilities. Further, the MPI function is implemented that integrates functional preferences for material, process, and their compatibilities to contrast against standalone material and process selections. The material-process combination with the highest MPI was chosen as the optimal solution for a product design. The cyber DFM methodology developed in this research can be extended to different application domains based on flexible user chosen criteria.

Micro Device Modeling Method and Design for Manufacturability

The micro device designing flow begins with the mask design currently, which is not intuitive for designer and sometime made them confused. As a result, the manufacturability is hard to prove in advance with the traditional designing way. Especially for surface micro-machined device with multiple structural layers, the 2D mask design cannot ensure the fabrication of complex 3D device with high yields reliably. The rise of structural designing strategies gave a direction to change the traditional habit. On the other hand, the top-down method provides the advanced designing flow, which begins with the system level design. However, there still some key technologies to study further because of the novel design procedure. To improve the manufacturability of micro device, the designing flow based on design for manufacturability methodology is presented, which draw on the advantages and experience of the mechanical design method. The key technologies on the structural design level, the processes planning level and the fabricating level are introduced correspondingly. In addition, we present the framework to implement the method. DOI: http://dx.doi.org/10.11591/telkomnika.v11i8.3081

Development and application of a mixed product/process-based DFM methodology

This article presents the results of a research project on Design for Manufacturing (DFM) (Vliet 2001), carried out at Delft University of Technology from 1997 until 2001. The aim of the project was to enable effective application of the DFM concept during the entire design process, in order to help reduce design and manufacturing lead times and costs. A DFM methodology has been developed that can be used to support the designer to apply DFM. The methodology is based on the approaches of design coordination and continuous design evaluation. Both approaches have been implemented to provide an active form of design support during the entire design process. The methodology supports the principles of systematic design. To enable the designer to apply these principles effectively, two new design tools have been developed for, respectively, the product design specification stage and the conceptual design stage. In order to be able to verify the DFM methodology, it has been implemented. The prototype computer-guided DFM system has been evaluated by experienced designers of various companies of the Dutch metalworking industry. The conclusion is that the proposed method of active design support is a suitable one, and that the DFM methodology enables effective application of the DFM concept.