1,721,049 research outputs found
Toward eco-design: an integhrated life cycle engineering system to develop susteinable mechatronic products and services
No full textIl processo di progettazione industriale, in passato, si basava principalmente sulla riduzione dei
costi, sull’incremento della qualità del prodotto e sulla diminuzione dei tempi di produzione. Per
questi motivi, diversi strumenti di progettazione sono stati sviluppati con lo scopo di aiutare i
progettisti industriali nelle loro attività.
Oggigiorno gli aspetti ambientali stanno diventando sempre più attuali e per questo motivo
rappresentano un importante fattore di mercato che deve essere considerato. Infatti, i consumatori
hanno sviluppato una sempre crescente sensibilità ambientale che porta loro ad essere attratti da
“prodotti verdi” o “prodotti ecologici”.
Da questa considerazione deriva il bisogno, dei parte dei progettisti industriali, di strumenti in
grado di considerare sia gli aspetti di tipo ambientale che quelli di costo all’interno del processo di
sviluppo prodotto. Negli ultimi anni diversi strumenti si sono affacciati sul mercato a questo
scopo.
Sistemi IT, ad esempio sono attualmente impiegati nel processo di progettazione industriale e
possono essere raggruppati sotto la famiglia dei sistemi PLM (Product Lifecycle Management). I
sistemi PLM possono essere visti come l’integrazione di diversi strumenti, metodi, persone e
processi attraverso tutte le fasi del ciclo di vita del prodotto.
Da un altro punto di vista, esistono invece strumenti per specialisti per valutare e calcolare gli
impatti ambientali di prodotti industriali attraverso l’ausilio di diversi metodi. L’LCA (Life Cycle
Assessment), ad esempio, è il più importante metodo per determinare il carico ambientale di
prodotti e servizi.
Lo scopo di questa ricerca si può sintetizzare come la definizione di un nuovo approccio, di una
nuova metodologia e di nuovi strumenti eco-design per la considerazione degli aspetti ambienti e
di costo nel ciclo di vita del prodotto durante il processo di progettazione. Questo lavoro di ricerca
è un passo avanti verso lo sviluppo di una piattaforma eco-design integrata grazie al collegamento
tra i sistemi IT (PLM and CAD software) e le metodologie di lifecycle (LCA & LCC).
L’ambiente di progettazione eco-design rappresenta il modo di sviluppare nuovi prodotti e servizi
eco-sostenibili nelle prime fasi del processo di progettazione. Allo scopo di dimostrare i vantaggi
derivanti dall’uso della metodologia eco-design proposta e relativa piattaforma software, diversi
gruppi funzionali di prodotti meccatronici e prototipi di elettrodomestici sono stati realizzati per
misurare sperimentalmente i risultati ottenuti grazie alle scelte effettuate con l’ausilio della
piattaforma eco-design.
Il risultato auspicato per queste tipologie di prodotti è una forte riduzione dei consumi energetici
in relazione all’attuale consumo energetico in uso ed una riduzione dei rifiuti industriali. In
aggiunta, ulteriori vantaggi in termini di assemblabilità di prodotto, gestione logistica dei fornitori
e riduzione del costo nell’intero ciclo di vita del prodotto sono stati evidenziati
A Multi-objective Design Approach to Include Material, Manufacturing and Assembly Costs in the Early Design Phase
No full textAbstractConceptual design is a crucial activity in the product development process. The design freedom must consider a trade-off analysis among several aspects such as assembly, manufacturing, and costs. The goal of this approach is to define a multi-objective design approach for the determination of feasible design options. The approach is grounded on the concept of functional basis for the analysis of product modules and the theory of Multi Criteria Decision Making (MCDM) approach for the assessment of the best design option. A complex product (tool-holder carousel of a machine tool) is used as a case study to validate the approach
Design for Manufacturing and Assembly vs. Design to Cost: Toward a Multi-objective Approach for Decision-making Strategies During Conceptual Design of Complex Products
No full textAbstractDesign-for-Assembly (DfA) and Conceptual DfA criteria are used in the generation of cost-effective assembly sequences for complex products. The design freedom suggests optimal solutions in the assembly time minimization problem regardless costs and issues about materials and manufacturing processes selection. The goal of this approach is to investigate how the application of the conceptual DfA affects the material and manufacturing costs (Design-to-Cost). A complex product (tool-holder carousel of a CNC machine) is used as a case study. The outcome is an approach to support designers and engineers in the re-design process for the product development and cost reduction
Includes Knowledge of Dismantling Centers in the Early Design Phase: A Knowledge-based Design for Disassembly Approach
No full textAbstractNowadays, a large number of goods (e.g. appliances and electronic products) must be treated in dismantling centers after the conclusion of their lifecycle. Selective disassembly is necessary to accomplish environmental directives and to increase their sustainability. Dismantling centers developed internal non-standardized procedures to remove dangerous components and to minimize disassembly costs. The proposed approach aims to create a collection of the disassembly knowledge coming from dismantling centers as a repository for design actions oriented to End-of-Life. The final goal is to define a knowledge-based Design for Disassembly approach to support companies in designing products with improved disassemblability and maintainability
LeanDfd: A design for disassembly approach to evaluate the feasibility of different End-of-Life scenarios for industrial products
No full textProduct disassembly is an important phase of the product lifecycle. It occurs to minimize the maintenance time and evaluate the End-of-Life (EoL) strategies, for example component reuse/recycling. These scenarios should be considered during the design process when decisions influence product architecture/structure. In this context, the present work describes an approach to support the designer's evaluation of disassemblability by using the 3D CAD model structure and suitable key indices related to product features. A software system allows the product model to be analyzed and evaluates the disassemblability degree. An experimental case study facilitates the approach demonstration and highlights product performance
A method to optimize assemblability of industrial product in early design phase: From product architecture to assembly sequence
No full textThe development of modular products is diffused in modern production due to the achievable flexibility and to the required product personalization. Modular products can maximize the efficiency of productive processes if they are structured to be easily configurable during the assembly phase. In this context the present work proposes an approach to optimize the product's modular architecture aimed to improve manual assemblability. The goal of this method is to assess the product assembly sequence during the early design stage. In particular it improves the conceptual design for assembly approach by taking into account the role of different flows in the modular product structure and the types of interface between modules. A case study regarding the household appliance field is reported and it allows the method results to be shown and to highlight advantages and drawbacks. A relevant improvement in terms of the reduction of assembly time is obtained. © 2012 Springer-Verlag
Indices to support the Design for Disassembly product evaluation during the design process
No full textCAD-integrated LCA tool: Comparison with dedicated LCA software and guidelines for the improvement
No full textCAD-integrated LCA tools are developed in order to support SLCA (Simplified Life Cycle Assessment) method and they could be used as eco-design tools in the design phase. Nevertheless they are still a long way from being accurate and properly usable. The present work aims at demonstrating this assumption in concrete terms by focusing the attention on the mechanical field. A comparison analysis between CAD-integrated LCA tools and dedicated LCA tools has been proposed in order to determine the main causes of error and to propose guidelines for improvement. An approach based on these guidelines is presented and preliminarily evaluated
A Software Tool for the Analysis and Management of Resource Consumptions and Environmental Impacts of Manufacturing Plants
No full textThe paper presents a lifecycle approach and the related software tool for the analysis and management of resource consumptions and environmental impacts of manufacturing plants. The approach, based on the industrial metabolism model, takes into account all the production and assembly aspects. The tool is able to assess the optimum working conditions for the minimization of resource consumptions (e.g. electricity) or environmental emissions (e.g. CO2). It provides a tangible support to guide decision-making strategies to move manufacturing towards sustainability. A manufacturing plant has been analysed for the model validation and the management of production scenarios, optimizing environmental and energy loads
- …
