Who Designs and Develops Products?

Product development is an interdisciplinary activity requiring contributions from nearly all the functions of a firm; however, three functions are almost always central to a product development project:

• Marketing: The marketing function mediates the interactions between the firm and its customers. Marketing often facilitates the identification of product opportunities, the definition of market segments, and the identification of customer needs. Marketing also typically arranges for communication between the firm and its customers, sets target prices, and oversees the launch and promotion of the product.

• Design: The design function plays the lead role in defining the physical form of the product to best meet customer needs. In this context, the design function includes engineer; ing design (mechanical, electrical, software, etc.) and industrial design (aesthetics, ergonomics, user interfaces).

• Manufacturing: The manufacturing function is primarily responsible for designing, operating, and/or coordinating the production system in order to produce the product. Broadly defined, the manufacturing function also often includes purchasing, distribution, and installation. This collection of activities is sometimes called the supply chain.

Different individuals within these functions often have specific disciplinary training in areas such as market research, mechanical engineering, electrical engineering, materials science, or manufacturing operations. Several other functions, including finance and sales, are frequently involved on a part-time basis in the development of a new product. 

Beyond these broad functional categories, the specific composition of a development team depends on the particular characteristics of the product. Few products are developed by a single individual. The collection of individuals developing a product forms the project team. This team usually has a single team leader, who could be drawn from any of the functions of the firm. The team can be thought of as consisting of a core team and an extended team. In order to work together effectively, the core team usually remains small enough to meet in a conference room, while the extended team may consist of dozens, hundreds, or even thousands of other members. (Even though the term team is inappropriate for a group of thousands, the word is often used in this context to emphasize that the group must work toward a common goal.) In most cases, a team within the firm will be supported by individuals or teams at partner companies, suppliers, and consulting firms . Sometimes, as is the case for the development of a new airplane, the number of external team members may be even greater than that of the team within the company whose name will appear on the final product. The  composition of a team for the development of an electromechanical product of modest complexity is
shown in Exhibit 1-2.
Throughout this book we assume that the team is situated within a firm. In fact, a for-profit manufacturing company is the most common institutional setting for product development, but other settings are possible. Product development teams sometimes work within consulting firms, universities, government agencies, and nonprofit organizations.

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  • References and Bibliography
    Exercises
    A wide variety of resources for this chapter and for the rest of the book are available on the Internet. These resources include data, templates, links to suppliers, and lists of publications. Current resources may be accessed via www.ulrich-eppinger.net
    Wheelwright and Clark devote much of their book to the very early stages of product development, which we cover in less detail.
    Wheelwright, Stephen c., and Kim B. Clark, Revolutionizing Product Development: Quantum Leaps in Speed, Efficiency, and Quality, The Free Press, New York, 1992.
    Katzenbach and Smith write about teams in general, but most of their insights apply to product development teams as well.
    Katzenbach, Jon R., and Douglas K. Smith, The Wisdom of Teams: Creating the High-Performance Organization, Harvard Business School Press, Boston, 1993.
    These three books provide rich narratives of development projects, including fascinating descriptions of the intertwined social and technical processes.
    Kidder, Tracy, The Soul of a New Machine, Avon Books, New York, 1981.
    Sabbagh, Karl, Twenty-First-Century Jet: The Making and Marketing of the Boeing 777, Scribner, New York, 1996.
    Walton, Mary, Car: A Drama of the American Workplace, Norton, New York, 1997.




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  • Titanium

    Titanium and its alloys are similar in strength to moderate-strength steel but weigh half
    as much as steel. The material exhibits very good resistence to corrosion, has low thermal conductivity, is nonmagnetic, and has high-temperature strength. Its modulus of elasticity is between those of steel and aluminum at 16.5 Mpsi (114 GPa). Because of its many advantages over steel and aluminum, applications include: aerospace and military aircraft structures and components, marine hardware, chemical tanks and processing equipment, fluid handling systems, and human internal replacement devices. The disadvantages of titanium are its high cost compared to steel and aluminum and the difficulty of machining it.




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  • Mechanical Engineering
    McGraw−Hill Primis
    ISBN: 0−390−76487−6
    Text:
    Shigley’s Mechanical Engineering Design,
    Eighth Edition
    Budynas−Nisbett


    Characteristics of Successful Product Development

    From the perspective of the investors in a for-profit enterprise, successful product development results in products that can be produced and sold profitably, yet profitability is often difficult to assess quickly and directly. Five more specific dimensions, all of which ultimately relate to profit, are commonly used to assess the performance of a product development effort:
    • Product quality: How good is the product resulting from the development effort? Does it satisfy customer needs? Is it robust and reliable? Product quality is ultimately reflected in market share and the price that customers are willing to pay.
    • Product cost: What is the manufacturing cost of the product? This cost includes spending on capital equipment and tooling as well as the incremental cost of producing each unit of the product. Product cost determines how much profit accrues to the firm for a particular sales volume and a particular sales price.
    • Development time: How quickly did the team complete the product development effort?
    Development time determines how responsive the firm can be to competitive forces and to technological developments, as well as how quickly the firm receives the economic returns from the team's efforts.
    • Development cost: How much did the firm have to spend to develop the product? Development
    cost is usually a significant fraction of the investment required to achieve the profits.
    • Development capability: Are the team and the firm better able to develop future products as a result of their experience with a product development project? Development capability is an asset the firm can use to develop products more effectively and economically in the future.
    High performance along these five dimensions should ultimately lead to economic success; however, other performance criteria are also important. These criteria arise from interests of other stakeholders in the enterprise, including the members of the development team, other employees, and the community in which the product is manufactured.
    Members of the development team may be interested in creating an inherently exciting product. Members of the community in which the product is manufactured may be concerned about the degree to which the product creates jobs. Both production workers and users of the product hold the development team accountable to high safety standards, whether or not these standards can be justified on the strict basis of profitability. Other
    individuals, who may have no direct connection to the firm or the product, may demand that the product make ecologically sound use of resources and create minimal dangerous waste products.




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  • References and Bibliography
    Exercises
    A wide variety of resources for this chapter and for the rest of the book are available on the Internet. These resources include data, templates, links to suppliers, and lists of publications. Current resources may be accessed via www.ulrich-eppinger.net
    Wheelwright and Clark devote much of their book to the very early stages of product development, which we cover in less detail.
    Wheelwright, Stephen c., and Kim B. Clark, Revolutionizing Product Development: Quantum Leaps in Speed, Efficiency, and Quality, The Free Press, New York, 1992.
    Katzenbach and Smith write about teams in general, but most of their insights apply to product development teams as well.
    Katzenbach, Jon R., and Douglas K. Smith, The Wisdom of Teams: Creating the High-Performance Organization, Harvard Business School Press, Boston, 1993.
    These three books provide rich narratives of development projects, including fascinating descriptions of the intertwined social and technical processes.
    Kidder, Tracy, The Soul of a New Machine, Avon Books, New York, 1981.
    Sabbagh, Karl, Twenty-First-Century Jet: The Making and Marketing of the Boeing 777, Scribner, New York, 1996.
    Walton, Mary, Car: A Drama of the American Workplace, Norton, New York, 1997.

    Magnesium

    The density of magnesium is about 1800 kg/m3 (0.065 lb/in3), which is two-thirds that of aluminum and one-fourth that of steel. Since it is the lightest of all commercial metals, its greatest use is in the aircraft and automotive industries, but other uses are now being found for it. Although the magnesium alloys do not have great strength, because of their light weight the strength-weight ratio compares favorably with the stronger aluminum and steel alloys. Even so, magnesium alloys find their greatest use in applications where strength is not an important consideration. Magnesium will not withstand elevated temperatures; the yield point is definitely reduced when the temperature is raised to that of boiling water. Magnesium and its alloys have a modulus of elasticity of 45 GPa (6.5 Mpsi) in tension and in compression, although some alloys are not as strong in compression as in tension. Curiously enough, cold working reduces the modulus of elasticity. A range of cast magnesium alloys are also available.


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  • Mechanical Engineering
    McGraw−Hill Primis
    ISBN: 0−390−76487−6
    Text:
    Shigley’s Mechanical Engineering Design,
    Eighth Edition
    Budynas−Nisbett