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2001, European Journal of Operational Research
This paper proposes operational frameworks for structuring product development processes. The primary objective of this research is to develop procedures to minimize iterations during the development process which adversely aect development time and costs. Several procedures are introduced to restructure the development process. The computation of the corresponding product development times is facilitated by two Markov models addressing dierent types of learning. The methodologies are employed to identify a set of managerial concerns in restructuring the product development processes. The developed framework has become an integral part of a re-engineering project for the development of rocket engines at Rocketdyne Division of Rockwell International. Throughout the paper, the methodologies are illustrated with the help of this process.
Concurrent Engineering
The evolution of computer-aided systems and systems for the product data management towards the product development management systems, modules of application for the product life cycle management, necessitates the changes in the functioning of production enterprises. Due to the global competition, the enterprises not only re-organize their strategies but also look for the new system solutions based on the knowledge. Such actions are necessary for the enterprises to reach the success. The article presents the knowledge about the product development processes realized in the production system, presented in the form of hierarchical decision nets. Production system was considered as the set of elements interacting with the relationships occurring in the environment. The process is described as the set of logical events occurring in the system. The model of product development was developed using the business process modelling notation. The implementation of selected knowledge area in B...
When a company tries to improve its product development process one of the first challenges is to become clear about two things: what "improvement" means and where within the overall process it is most necessary. The method proposed in this paper aims at identifying activities within a development process which have a high potential for improvement. It is based on the concept of process efficiency, i.e. the ratio of effort spent vs. value added. While the effort of a development activity can be determined quite easily, the value it adds is more difficult to quantify. Therefore an algorithm is described which uses a Design Structure Matrix (DSM) to calculate the value of each development activity based on the knowledge gained through it and the degree to which other activities depend on it. The method has been successfully applied to a real-life product development process and has received initial positive feedback from industry.
IEEE Transactions on Engineering Management, 2000
By the mid-1990s, the importance of early introduction of new products to both market share and profitability became fully understood. Thus, reducing product time-to-market became an essential requirement for continuous competition. Since product development projects (PDPs) are based on information content and their accompanying information-dominated methods, an efficient methodology for reducing PDP time initially requires developing an understanding of the information flow among different project processes. One tool that helps achieving this understanding is the design structure matrix (DSM). Because much of the time involved in a complex PDP is attributable to its expensive iterative nature, resequencing project activities for efficient execution become the next requirement. This paper presents a simulation-based optimization framework that determines the optimal sequence of activities execution within a PDP that minimizes project total iterative time given stochastic activity durations. A mathematical model representing the problem is built as an MS Excel module and Visual Basic for Applications (VBA) is used to interface this module with a metaheuristic optimization algorithm called Simulated Annealing and commercial risk analysis software "Crystal Ball" to solve the model.
Volume 4: 13th International Conference on Design Theory and Methodology, 2001
This paper uses the Design Structure Matrix (DSM) to model and simulate the performance of development processes. Though the simulation is a powerful tool for analyzing process performance, its ability is limited by the quality of input information used in the analysis. DSM simulation requires process data that is hard to assess or estimate directly from development participants. In this paper, we propose a methodology that allows a more practical estimation of an important simulation parameter: rework probabilities. Furthermore, we show how does this assessment method (combined with simulation) allow managers to evaluate process improvement plans based on two resulting process measures: reliability and robustness. The method is illustrated with a real application from the automotive industry.
Knowledge Enterprise: Intelligent Strategies in Product Design, Manufacturing, and Management, 2006
This paper presents methodology and guidelines about the use of process modeling languages to support BPR activities in relation with Product Development process. The methodology is based on the complementary adoption of different modeling techniques such as IDEF, UML and ARIS. Starting from the analysis of different models, we have selected and associated the most appropriate modeling suite to each phase of the re-engineering process. At this purpose, diagrams coming from IDEF, UML and ARIS families have been compared with respect to following issues: degree of formality, completeness, simplicity vs. detail, capability to describe "business goal" and support to costing operations.
Research in Engineering Design, 1994
This research is aimed at structuring complex design projects in order to develop better products more quickly. We use a matrix representation to capture both the sequence of and the technical relationships among the many design tasks to be performed. These relationships define the "technical structure" of a project which is then analyzed in order to find alternative sequences and/or definitions of the tasks. Such improved design procedures offer opportunities to speed development progress by streamlining the inter-task coordination. After using this technique to model design processes in several organizations, we have developed a design management strategy which focuses attention on the essential information transfer requirements of a technical project.
P & C Review, 2013
Ask ten people to define the "product development process" and you are like to get ten different answers, such is the impreciseness and ambiguity of the term. Notwithstanding this fact, the design and implementation of a properly constructed product development protocol, is of paramount importance in bringing new concepts rapidly to market, in a dynamic and competitive environment. The use of flexible but scientifically robust product development techniques, can mean the difference between success and failure and oversights frequently result in delayed launches, loss of revenue, wasted resource, or even complete product failure. The criticality of product development activity demands that any organisation involved in bring new concepts to market should clearly understand the requirements of doing so at the outset, in order to avoid problems at a later stage, which will inevitably compromise business success.
Journal of Marketing Research, 1997
As global competitive pressure increases and product life cycles compress, companies are trying to shorten product development cycle times. The author investigates the relationship between the actual length of product development cycle times (in months) and several basic product development project strategy and process characteristics. The research quantifies how product development cycle times increase with increased product complexity and with product newness, how using a cross-functional team interacts with product newness in the way it acts to reduce cycle time, and how using a formal product development process interacts with product complexity in the way it acts to decrease cycle time. The findings suggest that using cross-functional teams is more important in projects in which less of the design is a carryover from a previous generation. Teams then had a large impact in reducing product development cycle times. In contrast, implementing a well thought-out process is more important in firms {or divisions of firms) developing complex products or services. The more complex a product, the more time a formal process eliminates from the development cycle.
IEEE Transactions on Engineering Management, 2022
Determining the proper sequence of interrelated activities in the design of a complex product is an irrefutable challenge for project management. The presence of components with different levels of technology in a complex product can disrupt project planning and cause cost overruns or schedule delays. This article presents a multiobjective model for organizing interrelated activities by taking into account the impact of technological capability and financial aspect of the project with a periodic perspective. First, a multidomain matrix is devised based on design structure matrix and technology readiness level to demonstrate the impact of components technology maturity level. Second, a mathematical model is developed according to rework caused by information dependence (minimizing total feedback value), project financial aspect (minimizing the difference between the budget and project costs), and technology maturity level of components (minimizing technology risk). Finally, a possibilistic programming approach is applied to cope with the uncertainty of input data; in addition, to deal with multiple objective functions, an interactive fuzzy solution approach is implemented. To validate the model and solution approach, a numerical experiment and a case study are conducted. Testing results illustrate the importance of technology maturity level in sequencing activities and indicate that the model can be introduced as a management tool for the financial feasibility study of the project due to the balanced use of budget.
Digital Enterprise Challenges, 2002
Firms are facing very short and important innovation cycles, particularly in IT and Telecommunication sectors. Then a question appears: why do some innovations succeed whereas other fail. From offer's point of view, a way could be to evaluate impacts of a decision to innovate for each of the actors involved in this product trajectory. Therefore the goal of such an approach is reducing high Innovation development risks by integrating the diverse stakes of life cycle actors and by helping design teams to integrate the evolution of some key environmental processes. We introduce in this paper the characteristics of the Innovation Process and Engineering Design Phase for high level innovations. In this framework, we propose an Innovation Valuation Model integrating strategic and tactic impacts in term of value and cost.
Management Science, 2004
OVERVIEW: The use of concurrent engineering (CE) and sequential engineering (SE) for new product development (NPD) was studied in one company over a two-year period. Various performance factors were measured. This paper points out the issues, benefits and barriers involved in adopting CE, and provides a framework for its systematic implementation. The framework is explained in the context of lessons learned.
Successful development projects are critical to success in many industries. To improve project performance managers must understand the dynamic concurrence relationships that constrain the sequencing of tasks as well as the effects of and interactions with resources (such as labor), project scope and targets (such as delivery dates). This paper describes a multiple phase project model which explicitly models process, resources, scope and targets. The model explicitly portrays iteration, four distinct development activities and available work constraints to describe development processes. The model is calibrated to a semiconductor chip development project.
2013
The inherent iterative nature of product design and development poses significant challenge to reduce the product design and development time (PD). In order to shorten the time to market, organizations have adopted concurrent development where multiple specialized tasks and design activities are carried out in parallel. Iterative nature of work coupled with the overlap of activities can result in unpredictable time to completion and significant rework. Many of the products have missed the time to market window due to unanticipated or rather unplanned iteration and rework. The iterative and often overlapped processes introduce greater amounts of ambiguity in design and development, where the traditional methods and tools of project management provide less value. In this context, identifying critical metrics to understand the iteration probability is an open research area where significant contribution can be made given that iteration has been the key driver of cost and schedule risk ...
American Journal of Industrial Engineering, 2014
Due to the increase of the products offered in the market and the reduction of the time of their life, Product Development Process (PDP) is considered a business process that become increasingly important for the competitiveness of companies. Products must be managed in order to quickly enter the market, better meet customer needs, are easier to manufacture, are attractive in the market and ensure a profit for the company. Since the beginning of the twentieth century, the main incentives for the development of new products in the food industry are related to the development and incorporation of technological innovation. Nowadays, PDP evolution is mainly due to concerns of industries to improve their economic performance, and at the same time increasing the quality of their products and meets the requirements of consumers. Although there are studies that seek to standardize the development of food products, implementation of PDP models is very new. This paper aims to analyze methods developed by different authors about the PDP oriented to food industry and make a comparison with the general model proposed by Rozenfeld et al. [9]. Among current models are the following: Fuller [5], Rudolph [6], Earle [4], Polignano and Drumond [7] and Penso [8]. These authors state sequences of structured phases that facilitate the understanding and implementation of a new product development in food industry.
R & D Management, 1995
Extensive organizational changes in the management of product development work of industrial companies are currently taking place. Speediness (time-based competition) and/or ‘high’ quality (total quality) are emphasized and for this purpose concepts such as simultaneous, concurrent or integrated product development have been introduced. This paper describes a study of the importance of these concepts in 29 large Swedish manufacturing companies and how these companies deal with the implementation of the new product development concepts. In addition, three in-depth studies have been carried out to enable a more detailed study to be made of the effects of the product development work on time and quality variables.
Smart Product Engineering: Lecture Notes in Production Engineering, 2013
Process modeling is a set of activities to be followed to create one or more models of a process for a certain purpose. Some modeling methods are more suitable for a given purpose than others, an essential fact to remember when choosing a modeling method. Some literature reviews about product development process modeling and their purposes are available on the literature; however, none of them intend to deplete the subject. Therefore, this research aims to provide a state of the art about product development process modeling methods and propose a detailed and comprehensive classification of them based on their purposes. To this end, a systematic literature review is conducted, followed by the elaboration of a matrix that relates modeling methods to their purposes. The resulting matrix can serve as a starting point for the elaboration of a framework for modeling method selection.
R and D Management, 2001
This paper focuses on how process modelling and analysis using`light weight' technology 1 supported by focused group discussions and workshops can improve the`concurrence' and integration within the New Product Development process. This enables managers to improve the management of product design and development through a better understanding of the issues. The paper argues that the traditional changes in human resource management via introduction of multifunctionalacollocated teams required by Concurrent New Product Development (CNPD) can be complemented by the introduction of process management, focused on the modelling and analysis of the`softer' organisational issues. A case study of a domestic appliance manufacturer, developing a new product using a collocated product development team, is described to verify the research. The paper concludes by discussing the issues that emerge from this type of approach to performance improvement in NPD management, such as involvement of all team functions, senior management commitment, standardisation of processes, and training in the process management concept including modelling and analysis techniques. The approach proposed allows one to make both tangible benefits, in terms of cost, delivery (lead times) and quality, and intangible benefits, in terms of communication, people empowerment, motivation, and collaboration.
European Journal of Operational Research, 2008
Intense competition in many industries impels firms to develop more products in less time. Overlapping of development activities is regarded as one of the most promising strategies to reduce project cycle time. However, the gain from overlapping must be weighed against the additional resource and time for rework. This paper presents a new product development (NPD) process model, termed Dynamic Development Process Model (DDPM), for managing overlapped iterative product development. We validated the model with data from a mobile phone development project. The DDPM was employed to identify appropriate policies for the overlapped iterative projects in the case study company. These identified policies were implemented in the company and led to marked improvement in project performance, thus demonstrating the viability of our model.
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