58 documents found, page 1 of 6
Water infrastructure asset management: A contribution to reducing disruptions i...
Nunes, Eusébio P.; Sousa, Sérgio; Carvalho, João; Rodrigues, Cristina Maria SantosThis chapter covers some key topics for asset management in general and for the administration of water supply and wastewater treatment infrastructure in particular. These infrastructures are public goods with high economic investment and are essential for the provision of basic services to the population and must therefore be managed in a sustainable manner to guarantee a high-quality service in harmony with e...
Quality costs and Industry 4.0: inspection strategy modelling and reviewing
Reis, Angélica Muffato; Dall-Orsoletta, Alaíze; Nunes, Eusébio P.; Costa, Lino; Sousa, SérgioInspection strategy (IS) is a key component impacting quality costs. Although often considered an infexible output of initial quality plans, it may require revisions given the dynamic quality situation of the manufacturing system. It is from this background that the present study aims to model and compare diferent IS based on the cost of quality (CoQ) approach for a case study in the automotive manufacturing in...
Improving a logistic complaints process through a six sigma project
Costa, I.; Nunes, Eusébio P.; Sousa, SérgioThe aim of this is work to propose improvements to reduce the time for handling logistic complaints in an electronic components company, tier 1 supplier to the automotive industry. Six Sigma methodology was used, allowing to identify the variables that influence the logistics quality complaint process since it provides an organized structure for the definition of defects, analysis and problem solving. This resu...
Assessment of alternative quality control plans in dynamic contexts: a simulati...
Sousa, Sérgio; Dias, Luis S.; Nunes, Eusébio P.Process quality planning should establish a Quality Control Plan (QCP) to achieve the desired quality level with minimum Cost of Quality (CoQ). This plan establishes the critical quality variables, control stations in the process, and control method at each control station. The purpose of this study is to, through a simulation approach, determine a QCP for a manufacturing process, which minimizes the CoQ. The i...
Contribution to reduce type II error at the end-of-line inspection at an automo...
Santos, E. M.; Nunes, Eusébio P.; Sousa, Sérgio; Rodrigues, Cristina Maria SantosPurpose - In the automotive industry, it is necessary to create improvement opportunities to increase customer satisfaction and to stand out from the competition. Components to be assembled in a car are subject to a final end-of-line (EOL) inspection, which are measured using numerical and attributive variables, with a final result of OK / NOK. However, this inspection is not perfect. In this paper, a method is...
Using cost of quality to select alternative suppliers and determine incoming in...
Sousa, Sérgio; Telhada, José; Nunes, Eusébio P.Process quality planning should establish the incoming quality inspection plan to achieve the desired quality level with minimum Cost of Quality (CoQ). Additionally, the selection of alternative suppliers must be defined, and, in a dynamic context, the best solution may vary. The purpose of this study is to, through a simulation approach, minimize the total CoQ of two related decisions: i) supplier selection an...
Implementation of a quality cost management model: case study from the textile ...
Barros, Bruno; Rodrigues, Cristina Maria Santos; Sousa, Sérgio; Nunes, Eusébio P.The goal associated with quality costs management, is to reduce them, because they can make up a significant proportion of a company’s overall expenses, but the majority of Portuguese companies from the textile industry sector do not use quality cost management systems. Additionally, there is a scarcity of sectorial case studies on this topic. Thus, a research gap seems to exist demanding more case studies on t...
Quality cost of 100% inspection on manufacturing processes: Advantages of using...
Dias, Luis S.; Nunes, Eusébio P.; Sousa, SérgioIn manufacturing companies, quality costs can be quantified and reduced. Nevertheless, there are obstacles to their determination, restricting the ability of organisations to establish quality cost reduction programmes to become more competitive. The paper's objective is to propose a simulation approach to determine the quality cost of 100% inspection strategy. The proposed approach is developed in SIMIO and pr...
Impact of order Size on quality Cost of 100% Inspection: A simulation approach
Nunes, Eusébio P.; Sousa, Sérgio; Dias, Luis S.In manufacturing companies, Cost of Quality (COQ) is in!uenced by inspection strategies. "e determination of CoQ, may involve in complex analitycal models. "e paper’s objective is to assess, through a simulation approach, the impact of order size in CoQ per unit when adopting 100% inspection, considering inspection errors and that some defects are repairable. "e proposed approach is developed in SIMIO to determ...
Inspection and repair cost modeling granularity: a pragmatic approach
Sousa, Sérgio; Nunes, Eusébio P.In manufacturing companies, quality costs can be determined and reduced, typically, by increasing preventive costs that are compensated by a reduction in failure costs. However, there are barriers to the determination of quality costs, limiting the ability of companies to establish quality cost reduction programs to become more competitive. The paper's objective is to propose a simple approach to assess quality...