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Geometric modelling has been an important and interesting subject
for many years from the purely mathematical and computer science
viewpoint, and also from the standpoint of engineering and various
other applications, such as CAD/CAM, entertainment, animation, and
multimedia. This book focuses on the interaction between the
theoretical foundation of geometric modelling and practical
applications in CAD and related areas. Geometric Modelling:
Theoretical and Computational Basis towards Advanced CAD
Applications starts with two position papers, discussing basic
computational theory and practical system solutions. The
well-organized seven review papers give a systematic overview of
the current situation and deep insight for future research and
development directions towards the reality of shape representation
and processing. They discuss various aspects of important issues,
such as geometric computation for space search and shape
generation, parametric modelling, feature modelling, user interface
for geometric modelling, geometric modelling for the Next
Generation CAD, and geometric/shape standard. Other papers discuss
features and new research directions in geometric modelling, solid
modeling, free-form surface modeling, intersection calculation,
mesh modeling and reverse engineering. They cover a wide range of
geometric modelling issues to show the problem scope and the
technological importance. Researchers interested in the current
status of geometric modelling research and developments will find
this volume to be an essential reference.
On the verge of the global information society, enterprises are
competing for markets that are becoming global and driven by
customer demand, and where growing specialisation is pushing them
to focus on core competencies and look for partnerships to provide
products and services. Simultaneously the public demands
environmentally sustainable industries and urges manufacturers to
mind the whole life span of their products and production
resources. Information infrastructure systems are anticipated to
offer services enabling and catalyzing the strategies of
manufacturing companies responding to these challenges: they
support the formation of extended enterprises, the mastering of
full product and process life cycles, and the digitalization of the
development process. Information infrastructure systems would
accommodate access to and transformation of information as required
by the various authorized stakeholders involved in the life phases
of products or production resources. Services should be available
to select and present all relevant information for situations
involving any kind of players, during any life phase of a product
or artifact, at any moment and at any place.
In this global society, manufacturers compete in many ways, and
information infrastructures play a critical role in ensuring the
right information is available at the right time and the right
place to support informed decision making. The traditional approach
that assumes all information can be located on a single mainframe
and accessed by everybody in the enterprise has fallen by the
wayside, and new infrastructures supporting extended or virtual
enterprises and globally distributed supply chains are becoming
increasingly vital to successful, competitive organizations.
Functions, data, and information must be made be available to all
without regard to location, accessibility, or the ability to view
in a native format. This book is a result of a conference, which
brought together a number of leading experts from around the world
that work on topics related to the design, implementation, and use
of information infrastructures for manufacturing. These experts
presented their views on the state of the art, and on a wide
variety of topics related to the title. The topics range from the
establishment of a generic enterprise framework, which can be used
for the design of a supporting information infrastructure to
details of how geometric surfaces should be merged together.
Although not an exhaustive publication, we believe that the
publications in this book represent the state of the art in this
research is essential reading for anyone who is attempting the
design or development of an information infrastructure for all
aspects of Manufacturing.
Rapid Product Development is a spectrum of integrated actlYllles
from initial requirements through research & development,
design, simulation, modeling, analysis, prototyping, testing,
production, deployment, training, maintenance, repair, disposal and
recycling, along with many other intermediate and supporting
elements such as quality, reliability, information integration and
supporting infrastructures. This term distinguishes leading edge
manufacturing technologies, processes, information systems and
management practices from their more conventional predecessors in
traditional manufacturing systems. The increased speed and
flexibility of the new rapid product development processes
correspond to greatly reduced time to market for new products, by
changing the basic nature of product realization. It is therefore
necessary to take account of aspects such as technology
integration, cost, quality and time management, team work and
business process organization and the supporting functions of data
processing, to guarantee the rapid development of innovative
products. Key technologies for Rapid Product Development include
such topics as Rapid Prototyping, New Generative Manufacturing
Methods, Design and Information Management, Virtual Prototyping and
Reverse Engineering. This book is a collection of relevant papers
which are related with these topics. It contains invited papers for
technical trends of Rapid Product Development, and it also serves
as a basis for further advanced researches.
Theory and practice of tolerances are very important for designing
and manufacturing engineering artifacts on a rational basis.
Tolerance specifies a degree of "discrepancy" between an idealized
object and its physical realization. Such discrepancy inevitably
comes into our product realization processes because of practical
cost consideration or our inability to fully control manufacturing
processes. Major product and production characteristics which are
affected by tolerances are product quality and cost. For achieving
high precision machines tight tolerance specification is necessary,
but this will normally increase product cost. In order to optimally
compromise the conflicting requirements of quality and cost, it is
essential to take into account of the total product life cycle
throughout product planning, design, manufacturing, maintenance and
recycling. For example, in order to construct durable products
under severe working conditions, low sensitivity of product
functionality with respect to tolerances is required. In future,
re-use of components or parts will become important, and tolerance
synthesis with respect to this aspect will be an interesting future
research topics.
Since the first DIISM conference, which took place 9 years ago, the
world has seen drastic changes, including the transformation of
manufacturing and engineering software, and the information and
communication technologies deployed. The conditions for
manufacturing and engineering have changed on a large scale, in
terms of technology-enabled collaboration among the fields of
design, engineering, production, usage, maintenance and
recyclingldisposal. These changes can be observed in
rapidly-growing fields such as supply chain management. As for
production technologies at factory floors, new visions on
human-machine co-existing systems involve both knowledge management
and multi-media technologies. Therefore, because of these changes,
the importance of information infrastructure for manufacturing has
increased, stunningly. Information infrastructure plays a key role
in integrating diverse fields of manufacturing, engineering and
management. This, in addition to its basic role, as the information
and communication platform for the production systems. Eventually,
it should also serve the synthetic function of knowledge
management, during the life cycles of both the production systems
and their products, and for all stakeholders.
Geometric modelling has been an important and interesting subject
for many years from the purely mathematical and computer science
viewpoint, and also from the standpoint of engineering and various
other applications, such as CAD/CAM, entertainment, animation, and
multimedia. This book focuses on the interaction between the
theoretical foundation of geometric modelling and practical
applications in CAD and related areas. Geometric Modelling:
Theoretical and Computational Basis towards Advanced CAD
Applications starts with two position papers, discussing basic
computational theory and practical system solutions. The
well-organized seven review papers give a systematic overview of
the current situation and deep insight for future research and
development directions towards the reality of shape representation
and processing. They discuss various aspects of important issues,
such as geometric computation for space search and shape
generation, parametric modelling, feature modelling, user interface
for geometric modelling, geometric modelling for the Next
Generation CAD, and geometric/shape standard. Other papers discuss
features and new research directions in geometric modelling, solid
modeling, free-form surface modeling, intersection calculation,
mesh modeling and reverse engineering. They cover a wide range of
geometric modelling issues to show the problem scope and the
technological importance. Researchers interested in the current
status of geometric modelling research and developments will find
this volume to be an essential reference.
In this global society, manufacturers compete in many ways, and
information infrastructures play a critical role in ensuring the
right information is available at the right time and the right
place to support informed decision making. The traditional approach
that assumes all information can be located on a single mainframe
and accessed by everybody in the enterprise has fallen by the
wayside, and new infrastructures supporting extended or virtual
enterprises and globally distributed supply chains are becoming
increasingly vital to successful, competitive organizations.
Functions, data, and information must be made be available to all
without regard to location, accessibility, or the ability to view
in a native format. This book is a result of a conference, which
brought together a number of leading experts from around the world
that work on topics related to the design, implementation, and use
of information infrastructures for manufacturing. These experts
presented their views on the state of the art, and on a wide
variety of topics related to the title. The topics range from the
establishment of a generic enterprise framework, which can be used
for the design of a supporting information infrastructure to
details of how geometric surfaces should be merged together.
Although not an exhaustive publication, we believe that the
publications in this book represent the state of the art in this
research is essential reading for anyone who is attempting the
design or development of an information infrastructure for all
aspects of Manufacturing.
Rapid Product Development is a spectrum of integrated actlYllles
from initial requirements through research & development,
design, simulation, modeling, analysis, prototyping, testing,
production, deployment, training, maintenance, repair, disposal and
recycling, along with many other intermediate and supporting
elements such as quality, reliability, information integration and
supporting infrastructures. This term distinguishes leading edge
manufacturing technologies, processes, information systems and
management practices from their more conventional predecessors in
traditional manufacturing systems. The increased speed and
flexibility of the new rapid product development processes
correspond to greatly reduced time to market for new products, by
changing the basic nature of product realization. It is therefore
necessary to take account of aspects such as technology
integration, cost, quality and time management, team work and
business process organization and the supporting functions of data
processing, to guarantee the rapid development of innovative
products. Key technologies for Rapid Product Development include
such topics as Rapid Prototyping, New Generative Manufacturing
Methods, Design and Information Management, Virtual Prototyping and
Reverse Engineering. This book is a collection of relevant papers
which are related with these topics. It contains invited papers for
technical trends of Rapid Product Development, and it also serves
as a basis for further advanced researches.
On the verge of the global information society, enterprises are
competing for markets that are becoming global and driven by
customer demand, and where growing specialisation is pushing them
to focus on core competencies and look for partnerships to provide
products and services. Simultaneously the public demands
environmentally sustainable industries and urges manufacturers to
mind the whole life span of their products and production
resources. Information infrastructure systems are anticipated to
offer services enabling and catalyzing the strategies of
manufacturing companies responding to these challenges: they
support the formation of extended enterprises, the mastering of
full product and process life cycles, and the digitalization of the
development process. Information infrastructure systems would
accommodate access to and transformation of information as required
by the various authorized stakeholders involved in the life phases
of products or production resources. Services should be available
to select and present all relevant information for situations
involving any kind of players, during any life phase of a product
or artifact, at any moment and at any place.
Theory and practice of tolerances are very important for designing
and manufacturing engineering artifacts on a rational basis.
Tolerance specifies a degree of "discrepancy" between an idealized
object and its physical realization. Such discrepancy inevitably
comes into our product realization processes because of practical
cost consideration or our inability to fully control manufacturing
processes. Major product and production characteristics which are
affected by tolerances are product quality and cost. For achieving
high precision machines tight tolerance specification is necessary,
but this will normally increase product cost. In order to optimally
compromise the conflicting requirements of quality and cost, it is
essential to take into account of the total product life cycle
throughout product planning, design, manufacturing, maintenance and
recycling. For example, in order to construct durable products
under severe working conditions, low sensitivity of product
functionality with respect to tolerances is required. In future,
re-use of components or parts will become important, and tolerance
synthesis with respect to this aspect will be an interesting future
research topics.
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