scholarly journals Study of Life Cycle Design Focusing on Resource Balance throughout Product Life Cycles

Procedia CIRP ◽  
2014 ◽  
Vol 15 ◽  
pp. 455-460 ◽  
Author(s):  
Yuki Matsuyama ◽  
Tomohiko Matsuno ◽  
Shinichi Fukushige ◽  
Yasushi Umeda
Keyword(s):  
Life Cycle ◽  
Life Cycles ◽  
Product Life ◽  
Product Life Cycles ◽  
Life Cycle Design

Study on life-cycle design for the post mass production paradigm

2000 ◽  
Vol 14 (2) ◽  
pp. 149-161 ◽  
Author(s):  
YASUSHI UMEDA ◽  
AKIRA NONOMURA ◽  
TETSUO TOMIYAMA
Keyword(s):  
Life Cycle ◽  
Mass Production ◽  
Product Life Cycle ◽  
Knowledge Bases ◽  
Life Cycles ◽  
Simulation System ◽  
Product Life ◽  
Cycle Simulation ◽  
Life Cycle Design ◽  
Modular Structures

Environmental issues require a new manufacturing paradigm because the current mass production and mass consumption paradigm inevitably cause them. We have already proposed a new manufacturing paradigm called the “Post Mass Production Paradigm (PMPP)” that advocates sustainable production by decoupling economic growth from material and energy consumption. To realize PMPP, appropriate planning of a product life cycle (design of life cycle) is indispensable in addition to the traditional environmental conscious design methodologies. For supporting the design of a life cycle, this paper proposes a life-cycle simulation system that consists of a life-cycle simulator, an optimizer, a model editor, and knowledge bases. The simulation system evaluates product life cycles from an integrated view of environmental consciousness and economic profitability and optimizes the life cycles. A case study with the simulation system illustrates that the environmental impacts can be reduced drastically without decreasing corporate profits by appropriately combining maintenance, reuse and recycling, and by taking into consideration that optimized modular structures differ according to life-cycle options.

Modeling Competition over Product Life Cycles

2015 ◽  
Vol 32 (04) ◽  
pp. 1550021 ◽  
Author(s):  
Ka Ching Chan ◽  
Terry M. Mills
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Life Cycles ◽  
Valuable Insight ◽  
Mobile Telecommunication ◽  
Product Life ◽  
Market Growth ◽  
Product Life Cycles ◽  
Market Shares ◽  
Different Types

This paper presents a mathematical model, linking the classical Markov models for brand switching and models for product life cycles, to forecast competition analysis and market share. This integrated model can be used to forecast market shares of all competitors, and their market shares, including customers retained, customers gained from market growth, and customers gained from competitors over the product life cycle. Such information provides forecasters with valuable insight about their market positions. The model is generic and can be applied to different types of products and services, under different types and patterns of product life cycle curves. A numerical example on a typical mobile telecommunication industry is used to illustrate the application of the proposed approach.

A Modular Method for Representing Product Life-Cycles

1997 ◽  
Author(s):  
Paul Jackson ◽  
David R. Wallace
Keyword(s):  
Life Cycle ◽  
Product Life Cycle ◽  
Life Cycles ◽  
Time Dependent ◽  
Integrated Network ◽  
General Process ◽  
Product Life ◽  
Product Life Cycles ◽  
Product Demand ◽  
Parameter Values

Abstract This paper describes an approach for modeling product life-cycles to create time-dependent inventories for use in environmental impact assessment. A general process module is defined relating resource inputs and outflows, based upon an embedded mathematical model. Then, a parametric model to represent the average performance of manufacturing processes is proposed and used within modules. Different parameter values may be used to represent a variety of life-cycle processes. Individual modules are combined to form product life-cycle networks. Designers may specify the required system output (product demand) as a function of time and the integrated network calculates the necessary time-dependent resource flows throughout the network.

Special Issue on Design and Manufacturing for Environmental Sustainability

2018 ◽  
Vol 12 (6) ◽  
pp. 805-805
Author(s):  
Yasushi Umeda
Keyword(s):  
Life Cycle ◽  
Environmental Sustainability ◽  
Circular Economy ◽  
Life Cycles ◽  
Special Issue ◽  
Product Life ◽  
Product Life Cycles ◽  
Design And Manufacturing ◽  
Part Selection ◽  
Multiple Product

This is the fourth special issue on design and manufacturing for environmental sustainability. While Japanese manufacturers are not so active in this field, the trend of integrating sustainability into manufacturing activities and management of companies is becoming dominant. We can point out three epoch-making instances: namely, United Nations’ ‘Sustainable Development Goals (SDGs),’ which consists of 17 goals to be achieved by 2030, covering not only environmental sustainability but also social and human sustainability; EU’s ‘Circular Economy,’ which promotes various routes for resource circulation (e.g., reuse, remanufacturing, maintenance, and recycling) for increasing employment and market competitiveness of EU and resource efficiency; and ‘Paris Agreement’ on climate change, which enforces reduction of the emission of greenhouse gases to zero by the end of this century. This special issue includes six well-written papers, all of which are deeply related to these three policies. The first four papers focus on product life cycle or even multiple product life cycles. This aspect is an inherent feature of design and manufacturing for environmental sustainability, which was not considered in traditional design and manufacturing. The keywords of these four papers are life cycle CO2 emission evaluation of electric vehicles, life cycle simulation of reuse among multiple product life cycles, disassembly part selection based on the idea of life expectancy, and personalization design aiming at avoiding mass production and mass disposal. The latter two papers are rather fresh in this journal. The fifth paper deals with customer preferences in Indonesia. Focusing on life styles in developing countries is a very important topic emphasized in SDGs. The last paper deals with food waste, which is emphasized in both SDGs and Circular Economy. Most of the papers, revised and extended in response to the editor’s invitations, were originally presented at EcoDesign 2017: the tenth International Symposium on Environmentally Conscious Design and Inverse Manufacturing, held in Tainan, Taiwan. The editor sincerely thanks the authors and reviewers for their devoted work in making this special issue possible. We hope that these articles will encourage further research on design and manufacturing for environmental sustainability.

The Nature of Product Life Cycles for Industrial Goods Businesses

1981 ◽  
Vol 45 (4) ◽  
pp. 97-108 ◽  
Author(s):  
Hans B. Thorelli ◽  
Stephen C. Burnett
Keyword(s):  
Life Cycle ◽  
Growth Rates ◽  
Product Life Cycle ◽  
Market Concentration ◽  
Life Cycles ◽  
Industrial Product ◽  
Product Life ◽  
Market Structures ◽  
Product Life Cycles ◽  
Competitive Entry

This study examined the market structures, performance, and strategies of over 1000 industrial businesses to determine whether and to what extent product life cycle forces were at work. The findings indicated that the growth rates of industrial product-markets are but one aspect of the product life cycle. Other variables exhibiting life cycle behavior included market innovation, market concentration, competitive entry, and spending on R & D and marketing.

Control of Uncertainties in Metal Forming by Applications of Higher Flexibility Dimensions

2011 ◽  
Vol 104 ◽  
pp. 83-93 ◽  
Author(s):  
Peter Groche ◽  
M. Kraft ◽  
S. Schmitt ◽  
S. Calmano ◽  
U. Lorenz ◽  
...  
Keyword(s):  
Metal Forming ◽  
Life Cycles ◽  
Flexible Forming ◽  
Product Life ◽  
Product Life Cycles ◽  
Servo Press ◽  
Recent Developments

It is widely accepted that fluctuations in market demands and product life cycles are often unpredictable. Based on these uncertainties, companies cannot calculate with constant demands. Manufacturers are also confronted with quality fluctuations in semi-finished parts that lead to various product qualities. This paper identifies the most relevant uncertainties for companies and gives answers how manufacturers can deal with these problems. It also shows recent developments in the field of flexible forming using servo press technology. Hereby the focus is set on 3D Servo Presses, providing various options for accomplishing uncertainties.

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