EXPERT SYSTEM APPLICATION IN RP

From: Elaine Hunt (ehunt@ces.clemson.edu)
Date: Wed Mar 15 2000 - 21:33:40 EET


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Seeking intelligent product development - an integrator environment based
on STEP
  Author(s): Sousa, P.; Jardim-Goncalves, R.; Pimentao, J.P.;
Pamies-Teixeira, J.; Steiger-Garcao, A.
  Author Affiliation: UNINOVA
  Source: Journal of Intelligent Manufacturing v10 n3 1999 Kluwer Academic
Publishers Dordrecht Netherlands p 313-321 0956-5515 JIMNEM
  Abstract: Rapid Prototyping (RP) is an emerging technology with different
applications in the cycle of product and process development used during
the conceptual and specification phases. To support it,
  the usage of a Data Base Management System (DBMS) and an Expert Systems
(ES) are important to manage the data, support the identification of errors
and check product conformance and production
  viability during this cycle, seeking intelligent product development. The
underlying concept of RP and ES is very straight forward, but still exists
a major problem that concerns the integration in the
  CAD/CAM environment. CAD data can have a variety of formats depending on
the model used in the CAD system, as well as on ES' data and knowledge
structure, that usually relies on the expert system
  shell's where it was developed. To support and speed up the integration
process of these tools in a manufacturing environment, is essential to have
an integrator environment where a standard is adopted for
  the data and knowledge exchange process, providing the software
applications with a neutral format interface, becoming these tools open and
standard compliant, ready to be used in any other standard
  environment. UNINOVA, in the scope of European and National projects,
developed a STEP-based Platform for Integration of applications (SIP) to
support and aid the software integration in industrial
  environments using the standard ISO10303-STEP, already used in different
industrial domains. This paper addresses the integration aspects using STEP
within industrial environments from the technical point
  of view, and proposes an architecture and a toolkit for the integrator
environment, highlighting the implementation efforts to required to have RP
technology, ES and DBMS focused towards a STEP-based
  intelligent product development. English (Author abstract) 13 Refs.

Proceedings of the 1997 13th International Conference on Computer-Aided
Production Engineering
  Author(s):
  Author Affiliation:
  Source: Journal of Materials Processing Technology Proceedings of the
1997 13th International Conference on Computer-Aided Production Engineering
Jun 11-13 1997 v 76 n 1-3 Apr 1998
  Warsaw, , , Poland, Elsevier Science S.A. Lausanne Switzerland 299p
0924-0136 JMPTEF
  Abstract: The proceedings contains 48 papers from the 13th International
Conference on Computer-Aided Production Engineering. Topics discussed
include: computer aided manufacturing;
  computer aided design; computer integrated manufacturing; logistic
oriented product design; flexible manufacturing systems; computer aided
process planning; intelligent hybrid systems;
  integrated fixture decision support tools; computer numerical control
machine tools; precision forging; agile manufacturing; artificial
intelligence; Internet and World Wide Web applications in
  manufacturing; robotics; expert systems; concurrent engineering; rapid
prototyping; and computer aided production management. English
  Subjects: Production engineering Computer aided manufacturing; Computer
integrated manufacturing; Computer aided design; Flexible manufacturing
systems; Process engineering; Robotics;
  Expert systems; Concurrent engineering; Rapid prototyping; Decision
support systems; Product design; Computer control;

Cinderella - already at the ball
  Author(s): Dwyer, John
  Author Affiliation:
  Source: Manufacturing Computer Solutions v 5 n 1 1999 Findlay Publ Ltd
Orpington UK p 3 1358-1066 MCSOFD
  Abstract: From the design through scheduling to dispatch, knowledge
engineering (KE) is everywhere. Some of the most impressive productivity
gains KE has made possible are right at the
  beginning, when the germ of an idea for a product first moves towards
reality. Ke relies on pouring the knowledge and experience of those who
design, make and run things into a database in the
  form of a series of rules which can be refined as time goes on.
Assembling them is laborious but, once formulated, the rules allow repeated
tasks to be accomplished in a fraction of the time they
  took. Different intelligent computer aided design/computer aided
manufacturing tools, which covers every aspect of engineering for design
and manufacture are presented. English
  Subjects: Computer integrated manufacturing Computer aided design;
Computer aided manufacturing; Rapid prototyping; Knowledge engineering;
Expert systems; Computer simulation;
  Computer control systems; Numerical control systems; Logic programming;
Database systems; Object oriented programming;

Product configuration frameworks - a survey
  Author(s): Sabin, Daniel; Weigel, Rainer
  Author Affiliation: Univ of New Hampshire
  Source: IEEE Intelligent Systems & Their Applications v 13 n 4 Jul-Aug
1998 IEEE Piscataway NJ USA p 42-49 0885-9000 IISYF7
  Abstract: The manufacturing trend toward mass customization has awakened
great interest in automatic product configuration techniques. The specific
aspects of configuration were identified as
  a reasoning task and the most representative frameworks that were
developed for representing and solving configuration problems were
described. This paradigm combines mass production's
  economies of scale with custom manufacturing's flexibility. English 30 Refs.
  Subjects: Expert systems Artificial intelligence; Rapid prototyping;
Product design; Flexible manufacturing systems; Computer aided design;
Computer aided software engineering; Competition;
  Knowledge representation; Adaptive algorithms; Computational linguistics;
Computational complexity; Formal logic;

Knowledge-based CAD
  Author(s): Duggan, Kevin; Wyatt, Craig
  Author Affiliation: B-Line Systems, Inc
  Source: PC AI Intelligent Solutions for Today's Computers v 11 n 4
July-Aug 1997 Knowledge Technology Inc. Phoenix AZ USA p 22-24 0894-0711
PCAIE5
  Abstract: The knowledge of experienced system designers can be a key
component of a modern CAD system. One such system is TrayCAD 3.0, which is
a modification of B-Line's TrayCAD. In
  this system, the features available in AutoCAD work together with other
off-the-shelf tools. TrayCAD is a custom integration of best-in-class
products integrated in a way that brings out the best
  functionalities and features of each one. Compared with other development
paradigms, this kind of custom integration saves costs, gets the project
done faster, permits greater flexibility in
  development, and generates maximum return on software investment. English
  Subjects: Knowledge based systems Computer aided design; Graphical user
interfaces; Manufacture; Software engineering; Mathematical models; Error
detection; Expert systems; Relational
  database systems; LISP (programming language); Rapid prototyping;

Virtual prototype manufacturing software system for MEMS
  Author(s): Maseeh, Fariborz
  Author Affiliation: IntelliSense Corp
  Source: LEOS Summer Topical Meeting Advanced Applications of Lasers in
Materials and Processing Proceedings of the 1996 IEEE/LEOS Summer Topical
Meeting Aug 5-9 1996 1996 Keystone,
  CO, , USA, Sponsored by : IEEE; OSA; LEOS IEEE Piscataway NJ USA p 53 001638
  Abstract: IntelliSense reports on a new computer-aided design software
system for rapid prototype development of microelectromechanical systems.
This system, called IntelliCAD, is
  self-contained, easy-to-use and has an open architecture. The new
architecture integrates mask layout, a material database, a fabrication
database, process simulation, forward and backward
  search at each fabrication step, process debugging, solid modeling, and
parametric electrostatic, thermomechanical and electromechanical analysis
into one efficient and user friendly system. The
  novelty of the approach is in linking the performance modeling the
manufacturing (machine) parameters and allowing modifications for user
applications. English
  Subjects: Computer aided design Computer software; Microelectromechanical
devices; Computer architecture; Rapid prototyping; Database systems;
Computer simulation; Expert systems;
  Computer debugging; Electrostatics; Three dimensional; Algorithms;
Micromachining;

Expert system-based selection of the preferred direction of build for rapid
prototyping processes
  Author(s): Frank, Dietmar; Fadel, Georges
  Author Affiliation: Technical Univ of Munich
  Source: Journal of Intelligent Manufacturing v6 n5 Oct 1995 Chapman &
Hall Ltd London Engl p 339-345 0956-5515 JIMNEM
  Abstract: Current commercial rapid prototyping technologies are based on
a layered additive process to build parts. The layer-based process results
in a stairstepping effect, which can be
  apparent on curved and sloped surfaces. The selection of the build
orientation, whether based on experience, trial and error, or not even
considered, is one critical factor that affects the quality of
  the surface finish. Furthermore, it influences other important aspects,
such as the build time and the amount of support structure needed. The
authors propose an expert system tool that
  considers the various parameters that affect the production of the
prototype and interacts with the user to recommend the best direction to
build. The recommendation is based both on the user's
  input and on a decision matrix based on the result of interviews with
experts, which is implemented within the expert system. If an optimal
orientation is not possible, the tool helps the user to
  select an acceptable build direction. The expert system can also draw
attention to issues such as trapped volumes, which can be detrimental to
the build process. It helps to reduce the design
  time, to automate the build process and to minimize the cost of the
prototype. The results of this work form a base for ongoing research to
complete a tool that considers all major issues for a
  preferred orientation. English (Author abstract) 4 Refs.
  Subjects: Rapid prototyping Expert systems; Product design; Computer
aided design; Computer aided manufacturing; Design aids;

Schemebuilder: Computer aided knowledge based design of mechatronic systems
  Author(s): Counsell, John; Porter, Ian; Dawson, David; Duffy, Marcus
  Author Affiliation:
  Source: Assembly Automation v 19 n 2 1999 MCB Univ Press Ltd Bradford
Engl p 129-138 0144-5154 ASAUDL
  Abstract: Introduces the need for engineering knowledge management tools
for storing past solutions and expert knowledge for the design of automatic
precision machinery. The design of this
  type of machine, which is heavily utilized in modern manufacturing
industry, is very complex, time-consuming and potentially expensive.
Describes the design and functionality of a novel
  computer aided rapid prototyping tool named Scheme-builder. The design is
traced from its philosophical origins in the `Theory of domains' and how
this can be used by the designer with the aid
  of the computer. The application of this underlining methodology for the
design of precision machinery employing feedback control systems is also
described. Finally an example is shown for the
  design of a control system for precise position control of a glass bottle
making machine. English (Author abstract) 10 Refs.
  Subjects: Computer integrated manufacturing Mechatronics; Knowledge based
systems; Precision engineering; Machine design; Rapid prototyping; Factory
automation; Concurrent
  engineering; Feedback control; Decision support systems;

Expert system for the design and analysis of composite structures
  Author(s): Davidson, Barry; Roy, Utpal; Ludden, Chris
  Author Affiliation: Syracuse Univ
  Source: IIE Transactions (Institute of Industrial Engineers) v 31 n 4
1999 Kluwer Academic Publishers Dordrecht Netherlands p 303-312 0740-817X
IIETDM
  Abstract: A prototype expert system is described for concurrent design
and analysis of composite structures. This system integrates symbolic,
numerical and knowledge-based tools in an
  object-oriented programming environment for design synthesis, evaluation
and modification. The system determines structural behavior utilizing a
combination of analytical and numerical tools.
  Design modifications and structural optimization are performed using
heuristic and experientially derived knowledge bases. The different
domain-specific programs and commercial packages
  utilized by the system are integrated using a genetic interfacing
mechanism. The utility of the system is demonstrated by means of a design
case study for a typical aircraft or rotorcraft structural
  component. English (Author abstract) 13 Refs.
  Subjects: Product design Composite structures; Expert systems; Object
oriented programming; Structural analysis; Heuristic methods; Optimization;
Interfaces (materials); Computer simulation;
  Concurrent engineering; Rapid prototyping;

*******************************************************************
Opinions, suggestions, and other controversial matter VOID where prohibited.
******************************************************************
Elaine T. Hunt, Director elaine.hunt@ces.clemson.edu
Laboratory to Advance Industrial Prototyping
Clemson University 206 Fluor Daniel Bldg.
Clemson, SC 29643-0925
864-656-0321 (voice) 864-656-4435 (fax)
http://www.vr.clemson.edu/credo/persall/persall.html
http://www.vr.clemson.edu/rp/
http://www.vr.clemson.edu/credo/rp.html

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