Carlos Alberto Costa

Universidade de Caxias do Sul (UCS) · Laboratório de Prototipagem Rápida (CENT)

The sizable global use of fossil energy and the worries about harmful emissions to the environment and human health have led investigations focused on using renewable fuels. Ethanol seems to be a desirable renewable fuel due to availability and significant production. The ethanol fumigation in compression ignition engines has been explored as a pos...

The operation of a small engine-generator set in mono-fuel mode (diesel fuel - DO) and in dual-fuel mode using hydrous ethanol (HET) and castor oil (OM) blends was analyzed. Efficiency, power, specific fuel consumption and gaseous emissions were assessed in a single cylinder diesel cycle engine. The percentages in volume of the HET- OM samples were...

No processo produtivo, com moldes de injeção para peças termoplásticas, o tempo de resfriamento representa parcela significativa do ciclo. Sendo assim, torna se necessário, na etapa de projeto do molde, uma atenção em conseguir projetar o sistema de refrigeração, buscando se a máxima eficiência e homogeneidade com o resfriamento do produto. Para is...

O presente trabalho, aborda os desafios envolvidos com o planejamento e produção de ferramentas de injeção de Zamac® em um setor de ferramentaria, alocado dentro de uma empresa líder em metais para moda. Tal setor recebe muitas solicitações de diferentes áreas da empresa, que precisam ser conciliadas com a produção de ferramentas utilizadas no proc...

Most of the outsourcing models include decision criteria that consider the scenario of companies with serial production, as it is verified in the literature. Thus, this paper aims to discuss the criteria for decision making regarding outsourcing by companies with production to order, that is, customized products. In order to do so, a qualitative, e...

The purpose of this article is to investigate the effects of an unmodified small engine operating on diesel oil–natural gas (DO-NG) and soybean vegetable oil–natural gas at intermediate load. This is significant to reduce our dependency from diesel oil and the emissions of warming gases. Although it is important to highlight that the literature reg...

The increase in prices and our dependence on fossil fuels coupled with concerns about harmful emissions have motivated researchers to look for renewable and alternative fuels that have clean combustion and which can be produced locally. The fumigation of ethanol in diesel engines has been recognized as an effective alternative to improve efficiency...

A escolha por uma técnica de Planejamento e Controle da Produção (PCP) alinhada e adequada com o cenário de ambiente de produção de uma empresa é considerado um fator crucial para a sua estratégia. Tal escolha poderá refletir na forma como a empresa gerencia seus prazos, estoques e, consequentemente, seus custos. Este estudo propõe um instrumento p...

This work presents a study to evaluate the process of producing internal holes in ceramic disks produced by low pressure injection molding (LPIM) process. Two process conditions defined as pre-injection and post-injection were used to test the proposition. In the first one the pin cores that produce the holes were positioned in the cavity before th...

Passados dez anos do primeiro livro sobre manufatura aditiva (additive manufacturing – AM) – na época denominada prototipagem rápida –, muitas tecnologias evoluíram, algumas novas surgiram, empresas se fundiram ou foram adquiridas por empresas maiores e outras saíram do mercado. O mercado de tecnologias AM tem sido muito dinâmico, apresentando um c...

In this study, the relevant factors for the implementation of Lean in the PDP were evaluated. An analysis was carried out of an implementation of Lean in the PDP of an organization having mastery of the philosophy, proposing a model based on four macro components: leadership and management, organizational culture, tools, and environment. We propose...

This work presents a tribological study of ceramics parts produced by low-pressure injection molding (LPIM) using factorial design technique. An experimental design of was used to define the experiments and evaluate the influence of three variables on friction coefficient, wear rate and wear mechanisms. The normal load (5 N to 15 N), tangential vel...

This work presents a study regarding the influence of the cooling process, as a result of different mould insert materials, on ceramic parts dimensions obtained by low-pressure injection moulding process. Discs of ceramic with Ø80 × 2 mm, composed by 86 wt.% alumina (Al2O3) and 14 wt.% organic vehicle, were produced. An experimental injection mould...

Rapid tooling (RT) is an important application of additive manufacturing (AM). However, applications in this field are very dependent on the material that is available for use in AM processes. This work investigates the application of the new Digital ABS material from Stratasys in RT, focusing primarily on dimensional and surface stability during t...

As organizações como um todo, estão envolvidas em ambientes altamente dinâmicos e competitivos. A filosofia Lean adaptada ao Processo e Desenvolvimento de Produto (PDP) vem a contribuir com as estratégias competitivas para o desenvolvimento de produto visto que dentro das empresas o PDP é um dos mais expressivos processos, responsável pela agregaçã...

Este estudo se configura como um ensaio teórico. Foram abordadas as quatro grandes perspectivas da filosofia Lean, a Lean Manufacturing, o Lean Thinking, a Lean Enterprise e o Lean no processo de Desenvolvimento de Novos Produtos (DNP), e o nível de maturidade Lean das organizações e sua relação com o processo de DNP. A partir disso, foram identifi...

A filosofia Lean adaptada ao Processo e Desenvolvimento de Produto (PDP) contribui com as estratégias competitivas, visto que o PDP agrega valor ao negócio. Esse trabalho se configura como um estudo multicaso e propõe uma avaliação de fatores considerados importantes para a implantação do Lean no PDP. Analisou-se a implementação do Lean no PDP em c...

Brake system is a critical component for vehicle safety and performance. One type of brake system widely used in passenger cars is disc brake system due to its compactness and efficient heat dissipation. In this system brake pads play a key function, distributing the hydraulic force by the uniform contact with the brake disk with no deformations. B...

This work presents an evaluation of the application of rapid tooling concept in low-pressure injection molding process of ceramic components. Two cup-shape geometries with thin walls were defined. An experimental injection mould was designed and manufactured with heating and cooling systems built in. Two types of inserts materials were used: alumin...

The product development process (PDP) contributes directly to organizational competitive strategy, developing products with costs, prices, and expectations compatible to market requirements. This article objectives to analyze PDPs utilized by organizations in the light of theoretical models presented by this research in order to identify theoret...

O presente estudo se configura como um ensaio teórico. Foram abordadas as quatro grandes perspectivas da filosofia lean, a lean manufacturing, o lean thinking, a lean enterprise e o lean no processo de Desenvolvimento de Novos Produtos (DNP), e o nível de maturidade lean das organizações e sua relação com o processo de DNP. A partir disso, foram id...

The paper aims to explore a leading logistics company of the region of Caxias do Sul (RS). It refers to its transformation and its business configuration, from a traditional carrier into a logistics operator. The case study explores the structure, the development and the evolution of this transformation process of company. The data collection inclu...

Logistics operation outsourcing has become a regular practice for many companies strategy. As result, the use of specialized services provided by logistic operators appears as a way to increase company’s competitiveness. In order to respond to this need and add value to services offered, many cargo transport companies have changed their business to...

Equipment design for food industry should consider, in addition to performance, cost and quality requirements, further aspects regarding to hygiene and food safety. This paper discusses how information associated with hygiene aspects can be used as orientation criteria for equipment design for food industry. The study was based on specialized liter...

A Prototipagem Rápida tem se tornado uma ferramenta importante na inovação de produtos, permitindo o uso de protótipos em muitas fases do processo de desenvolvimento de produto (PDP). Conhecer e beneficiar-se desta tecnologia torna-se crucial para competitividade das empresas num mercado cada vez mais exigente. O presente trabalho analisa as relaçõ...

This work presents a study on rapid prototyping material degradation through the time. The material degradation used was Veroblue840 resin from Objet and was analyzed by its mechanical properties. Two types of tests were realized: tensile strength test (standard tests ASTM) and an experimental cantilever beam. The specimens were tested with 0, 30,...

Supply chain management has become a critical issue in the global collaboration scenario. Suppliers are not expected to provide just commodities or pre-defined components, but also collaborative engineering design solutions within the product development cycle. Thus, the selection criteria for defining supply partner go beyond the production and lo...

This study discusses the strategy of customer retention by means of the practice of relationship marketing in an environment of services. It proposed a theoretical model and its hypotheses, which is compared to a rival model, identified from the perception of executives of a Business Group with outstanding performance in the services sector in Braz...

This paper discusses the integrated use of rapid prototyping commercial technology and finite element method to support design of engineering components. The study was carried out on PolyJet RP technology. The resin properties were investigated by standard tests (ASTM) and used as input data on Abaqus software application. The results of the physic...

Knowledge reuse is recognised as a key element to support agile and effective decision-making processes during product development. The provision of information and knowledge for reuse relies on defined information structures and requires computational techniques that enable the reuse process within an integrated environment. Although, representing...

A product is the ultimate representation of the capabilities and competencies of a company in an attempt to translate ideas, concepts and perceptions into something concrete. Therefore, developing products is a complex and crucial task for companies, requiring the definition of strategic objectives and intensive use of technology particularly Infor...

Companies need to develop specific capabilities to product develop process (PDP), with the goal of producing products with costs, prices and expectations compatible to their market operate. This study aims to understand how the competitive strategy and costs interacting with the companies PDP. Thus, we developed an exploratory and qualitative multi...

Global supply chain scenario demands companies working in a collaborative approach in order to develop products efficiently. Thus, Product Development Process (PDP) must occur in parallel throughout the companies chain requiring a minimum level of alignment between these processes. This research presents a study developed within an automotive suppl...

Após anos de desenvolvimento de metodologias para o gerenciamento do processo de DNP (Desenvolvimento de Novos Produtos), surgiram modelos unificados para tal atividade, os quais possuem aplicabilidade tanto para itens relativamente simples quanto para itens mais complexos. Em recentes pesquisas, também é proposta a aplicação de conceitos lean em t...

No segundo semestre de 2008 iniciou a crise economica que provocou a influencia nos resultados organizacionais de diversas empresas. Os gestores tiveram que ser ageis em analise, para decidir em quais criterios competitivos as empresas estavam ameacadas e definir estrategias para estas permanecerem no mercado globalizado. O objetivo desta pesquisa...

The intense competition in global market along with constant changes in customer demands have forced companies to re-think some of their business processes in order to survive and stay competitive. Product development is one of the key business processes for any competitive or global company. The implementation of a product development process must...

The performance improvement associated to low risks of new product developing to the market can be achieved based on different strategic actions to support new product project management. The main issue discussed on this work is: why some nnew products are successful while others fail? The work has the objective to test different aspects within a p...

No segundo semestre de 2008 iniciou a crise econômica que provocou a influência nos resultados organizacionais de diversas empresas. Os gestores tiveram que ser ágeis em análise, para decidir em quais critérios competitivos as empresas estavam ameaçadas e definir estratégias para estas permanecerem no mercado globalizado. O objetivo desta pesquisa...

In the segment of heavy transport, trailers can have a wide range of configurations depending on their application. This can vary from mining to agriculture applications, each one with its own requirements and characteristics. Therefore, companies usually configure their engineering teams according to these applications. This provides much focused...

O uso de modelos de informações tem sido reconhecido como uma abordagem bastante eficiente para apoio às fases de desenvolvimento de produtos. Tradicionalmente este uso tem se limitado aos modelos de produtos, com ênfase nos seus aspectos geométricos. Este artigo estende o conceito tradicional de modelos de informações, para modelos adicionais de i...

O uso de componentes injetados de plástico aumentou nos últimos anos na maioria dos segmentos industriais. Como resultado, os processos envolvidos no projeto e na fabricação de moldes de injeção ganharam uma significativa atenção devido a grande complexidade, necessidade de baixo custo e, principalmente, curto tempo de manufatura. O uso de técnicas...

The product development process usually encompasses a very complex and interdisciplinary environment in which product is seen by different views related with the life-cycle functions. An approach based on information models can provide an integrated view of the product, supporting also product information and knowledge (I&K) reuse acquired in previ...

Computer-aided design systems require a comprehensive information interaction capability in order to support team-based design. This paper focuses on research concerned with providing this level of support through the use of a number of related information models. The provision of a common sharable information environment plays a critical role in a...

The development of information systems to support design and manufacturing activities should follow a reference model in order to be compatible with major systems architectures. In contrast, computational methodologies and notations provide ways to design and build information systems but usually do not take reference models into consideration. Thi...

The development of information systems to support design and manufacturing activities should follow a reference model in order to be compatible with major systems architectures. RM-ODP (Reference Model Open Distributed Processing) provides five level viewpoints against which information systems development can be compared and classified. The RM-ODP...

This is an article from the journal, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture [© IMechE ]. It is also available at: http://journals.pepublishing.com/content/7l714058h9813667/ Redesign, where previous information is recovered in order to be adapted to a new situation, is an area of design whe...

The provision of infrastructures, which can support co-operation and sharing across product development, is critical for effective virtual enterprises. The concept of a Product Model is well accepted as an integrating infrastructure, capturing information about a specific product. In this paper an informationknowledge model, termed a Product Range...

This is an article from the journal, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture [© IMechE ]. It is also available at: http://dx.doi.org/10.1243/0954405991516985 This paper presents a novel view of a software environment that has the potential to provide manufacturing information support to pro...

This paper presents a novel view of a software environment which has the potential to provide support to design for manufacture in line with the aims of global concurrent engineering. The arguments developed should have significant consequences for future CAE systems development and support the continuing globalisation in business development. The...

This work presents the main aspects related to the product information re-structure within an ERP system migration process. To support the migration process different test scenarios have been developed and applied to study case model i.e. pressed button, which is the main company product. A estrutura de produto foi modificada de um único nível para...

The design activity involves many decisions, which must be made based on a wide range of information and knowledge. Product models approaches have been applied to support cooperation across product development within a Concurrent Engineering environ ment. However, to support design decisions with quality and more consistently, additional types of i...

This paper presents an approach to support the identification and alignment of company key-processes within companies that have processes control and monitoring practices incorporated on their organizational culture. A framework based on three main dimensions and a set of attributes was proposed. The dimensions are: core competences, strategy and f...

A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.