HandJive: A device for interpersonal haptic entertainment
Author(s): Fogg, B.J.; Cutler, Lawrence D.; Arnold, Perry; Eisbach, Chris
Corporate Source: Stanford Univ, Stanford, CA, USA
Source: Conference on Human Factors in Computing Systems - Proceedings
Proceedings of the 1998 Conference on
Human Factors in Computing Systems, CHI Apr 18-23 1998 1998 Los Angeles,
CA, USA ACM New York NY USA p
57-64 CODEN: 002163
Publication Year: 1998
Abstract: The paper describes how we designed and prototyped HandJive, a
haptic device for interpersonal entertainment. HandJive is notable because
it relies entirely on haptic input and output. The design process included
typical
steps such as analyzing user needs and performing iterative prototyping
and testing. However, developing a haptic interface like HandJive also
presented special challenges, such as creating rapid physical prototypes
that could withstand abuse, developing a preliminary system of haptic
interaction, and testing haptic interfaces through low-tech prototypes. In
English
(Author abstract) 16 Refs. EI Order Number: 98084355976
Dextrous exploration of a virtual world for improved prototyping
Author(s): Caldwell, Darwin G.; Favede, C.; Tsagarakis, N.
Corporate Source: Univ of Salford, Salford, UK
Source: Proceedings - IEEE International Conference on Robotics and
Automation Proceedings of the 1998 IEEE
International Conference on Robotics and Automation. Part 1 (of 4) May
16-20 1998 v 1 1998 Leuven, Belgium
Sponsored by: IEEE 4 IEEE Piscataway NJ USA p 298-303 ISSN: 1050-4729
CODEN: PIIAET
Publication Year: 1998
Abstract: The capability of visualizing and touching models of new
products or new environments is a key factor in the design to production
process. Usually this requires the construction of a physical model of the
environment but production of the model can be costly and time consuming.
Use of CAD packages can assist with the visualization process, but
proprioceptive and tactile sensations are required to augment this and
provide the opportunity to feel the object. This work will show design,
construction and testing in a virtual world of a generic 18 dof
proprioceptive input and feedback exoskeleton to monitor the motions of
the human arm from sternum/spine to wrist and feedback tactile sensation
generated during contact within a virtual world. The design is light,
comfortable, and easy to wear for long periods providing an almost
complete, unhampered range of input options. The proprioceptive inputs are
augmented by tactile feedback of contact pressure (8 sensation points) to
the upper and lower arm segments and pressure, texture, slip,
edges/ridges/corners and thermal parameters to the hand. The paper will
show how the input/feedback exoskeleton can be used to explore CAD designs
generated in a commercial package (AutoCad) and imported directly into a
virtual world (WorldToolKit)
permitting testing of products/processes before production and thereby
improving the design-production process through the enhanced used of
concurrent engineering techniques. In English (Author abstract) 14 Refs. EI
Order Number: 98084347647
3D scanning and level of detail modelling for design and manufacturing
Author(s): Fischer, A.; Park, S.
Corporate Source: Technion, Haifa, Isr
Source: CIRP Annals - Manufacturing Technology v 47 n 1 1998 Hallwag Publ
Ltd Berne Switzerland p 91-94 ISSN:
0007-8506 CODEN: CIRAAT
Publication Year: 1998
Abstract: 3D scanning and modeling of manufacturing products play an
important role in the rapid prototyping cycle. In order to achieve
accurate reconstructed products, points are sampled at high density.
However, for reconstruction, conventional methods usually reduce the data
homogeneously without taking shape behavior, such as curvature and
topology, into consideration. As a result, essential characteristic details
may be lost. In this paper, an advanced method for reconstructing
progressive models is proposed. Through this method, the reconstructed
geometric model is represented by hierarchical levels of detail. The
option to explicitly control the levels of detail is essential for design,
modeling and analysis. The main advantage of the approach is that the
sampled points are significantly reduced to several levels of abstraction,
while at each level the geometric behavior is preserved. That is, even at
lower resolution levels, critical details are preserved. Moreover, the
method has been extended to progressive time and geometric models for
simulation and is demonstrated by several examples. In English (Author
abstract) 12 Refs. EI Order Number: 98084328686
FELIX: a volumetric 3D imaging technique
Author(s): Bahr, Detlef; Langhans, Knut; Bezecny, Daniel; Homann, Dennis;
Vogt, Carsten
Corporate Source: Technical Univ. of Braunschweig, Braunschweig, Ger
Source: Proceedings of SPIE - The International Society for Optical
Engineering New Image Processing Techniques and
Applications: Algorithms, Methods, and Components II Jun 16 1997 v 3101
1997 Munich, Ger Sponsored by: SPIE - Int
Soc for Opt Engineering, Bellingham, WA USA Society of Photo-Optical
Instrumentation Engineers Bellingham WA USA
p 202-210 ISSN: 0277-786X CODEN: PSISDG ISBN: 0-8194-2521-4
Publication Year: 1997
Abstract: FELIX is described which represents a physical volume
three-dimensional display. A modulated colored laser beam is directed via
mirrors and a computer controlled x-y scanning unit towards a transparent
enclosure containing a helical shaped projection screen. To describe a
physical space, this screen is rotated about its vertical axis so that it
occupies a cylindrical volume over time. Due to the translucent property of
the screen the hitting laser beam will be scattered and visible to the
observer. The position of each voxel (volume pixel) is determined by the
momentary location of the laser beam's intersection with the rotating
helix, thus providing a volumetric display medium through which scanned
laser pulsdes causes the eyes to fuse the light scattered from the moving
two-dimensional element into a three-dimensional image. Since the images
are generated within a given dispolay space rather than on a stationary
surface, they are intrinsically 3D and may be observed directly from any
position. The introduced image generation technique ensures that human
factors regarding depth sensation are satisfied automatically without the
need for special viewing glasses to be worn by the observer. A true 3D
volume display as described will complement the broad range of 3D
visualization tools such as volume-rendering packages, stereoscopic and
virtual reality techniques which have become widely available in recent
years. Potential applications for this development range from air traffic
control to various medical uses (e.g., Magnetic Resonance Imaging),
entertainment and education visualization as well as imaging in the field
of engineering, Computer Aided Design (CAD) and rapid prototyping. In
English EI Order Number: 97093812187
Eliminating prototype tooling in metal casting yields a seamless transition
from CAD to manufacturing - a case
study
Author(s): Uziel, Yehoram
Corporate Source: Saligen Technologies, Inc, Northridge, CA, USA
Source: Technical Paper - Society of Manufacturing Engineers. PE n
PE98-117 1998 SME Dearborn MI USA 9p Paper:
PE98-117 CODEN: 001381
Publication Year: 1998
Abstract: Direct Shell Production Casting (DSPC), is a rapid
manufacturing process dedicated to the production of functional cast metal
parts. DSPC works by producing ceramic casting molds, with integral cores,
directly from CAD files,
thereby eliminating the need for patterns and core boxes. This enables
engineers to exploit multiple design iterations concurrently (including
testing engine heads and blocks cast in different alloys), consequently
expediting the design phase. In English (Author abstract) EI Order Number:
98054215833
Development of time compression technologies for fast response manufacturing
Author(s): Ahmed, Shahid S.
Corporate Source: Purdue Univ, West Lafayette, IN, USA
Source: Technical Paper - Society of Manufacturing Engineers. MS
Proceedings of the 1997 AUTOFACT Conference
Nov 3-6 1997 1998 Detroit, MI, USA SME Dearborn MI USA 10p Paper:
MS98-102 ISSN: 0161-6382 CODEN:
TPSSDL
Publication Year: 1998
Abstract: The term Time Compression Technologies describes a range of
techniques and methods devised to reduce the total cycle time between
expression of need and the delivery to market of the manufactured product.
In time-based, fast response manufacturing, the objective is to minimize
the non-productive delays in the design to manufacturing cycle. Tooling
development times constitute a very significant component of this cycle. To
overcome this formidable challenge, a new integrating framework has been
developed that provides close coupling between component design, process
planning and tooling stages. In English (Author abstract) EI Order Number:
98054214825
Rapid prototyping tools for powertrain control systems development
Author(s): Hawkins, Charles E.; Berry, Ian J.
Corporate Source: Ford Motor Co Ltd
Source: IEE Colloquium (Digest) Proceedings of the 1997 IEE Colloquium on
the System Control Integration and Rapid
Prototyping in the Automotive Industry Dec 9 1997 n 388 1997 London, UK
IEE Stevenage Engl p 1/1-1/3 ISSN:
0963-3308 CODEN: DCILDN
Publication Year: 1997
Abstract: The application of a rapid prototyping environment for strategy
development work carried out by the Advanced In-line Gasoline and Diesel
Engineering (AIGDE) group within the Ford Motor Company is presented. The
use of rapid prototyping tools allows the abstraction of strategy
development to the appropriate level for control system design. Automatic
code generation binds this control system development environment to dSPACE
and AIGDE custom hardware. Manifold air-charge and fuel flow modeling are
example applications developed using rapid prototyping environment.
Accurate estimation of both air and fuel flows is necessary to maintain the
desired air-fuel ratio during transients.
Agile enterprise strategy: A next generation manufacturing concept
Author(s): Kidd, Paul T.
Corporate Source: Cheshire Henbury, Macclesfield, UK
Source: IEE Colloquium (Digest) Proceedings of the IEE Colloquium on
Agile Manufacturing Nov 27 1997 n 386 1997
London, UK IEE Stevenage Engl p 2/1-2/6 ISSN: 0963-3308 CODEN: DCILDN
Publication Year: 1997
Abstract: Agility as a subject is still a developing area. Companies are
starting to move towards agile behavior. The implementation of agility is
still very much a frontier activity, involving radically new concepts
concerning strategies, organization, people and technologies. It takes
businesses into a domain where fundamental and taken for granted
assumptions are challenged. Agility is a paradigm shift and before one can
move forward one has to understand the existing paradigm and to face up to
the often painful task of accepting that current practices and beliefs are
no longer appropriate or relevant. This in itself, is a major change
exercise but one that is vital to the successful development of agile
capabilities. In English 15 Refs.
Shorter product development time with digital mock-up
Author(s): Rooks, Brian
Corporate Source: Assembly Automation
Source: Assembly Automation v 18 n 1 1998 MCB Univ Press Ltd Bradford
Engl p 34-38 ISSN: 0144-5154 CODEN:
ASAUDL
Publication Year: 1998
Abstract: Digital prototyping is becoming a major tool in the fight to
shorten product lead times. A further development is digital mock-up that
allows designers to investigate the `assemblability' of a product and the
constraints imposed by manufacturing processes. The leading software
system for digital mock-up is DYNAMO, developed by Tecnomatix
Technologies. The attributes and benefits of this computer-aided production
engineering (CAPE) tool are discussed and its link to other CAPE products
highlighted. Many of the major automotive companies are now adopting DYNAMO
and the experience of Rover in particular is related. In English (Author
abstract) EI Order Number: 98044167588
Integrated experimental approach to link a laser digitiser, a CAD/CAM
system and a rapid prototyping system
for biomedical applications
Author(s): Chua, C.K.; Chou, S.M.; Ng, W.S.; Chow, K.Y.; Lee, S.T.; Aung,
S.C.; Seah, C.S.
Corporate Source: Nanyang Technological Univ, Singapore, Singapore
Source: International Journal of Advanced Manufacturing Technology v 14 n
2 1998 Springer-Verlag London Ltd.
London Engl p 110-115 ISSN: 0268-3768 CODEN: IJATEA
Publication Year: 1998
Abstract: This study is carried out to develop a direct link between a
laser digitiser and a rapid prototyping system for biomedical
applications. Two CAD/CAM systems, DUCT and Pro-Engineer, are investigated
and the DUCT system is found to be more suitable for this purpose. A laser
digitiser is used to capture three-dimensional surface data for the object.
With the aid of the CAD/CAM system, the data can be manipulated in a
number of ways for display, modification and enhancement. In addition, the
object scanned by the laser digitiser can be physically produced relatively
quickly and accurately using StereoLithography Apparatus (SLA), a leading
rapid prototyping system. Feasible and practical solutions to the problems
encountered in the CAD surface model construction are proposed and
illustrated. Two case studies, a facial and a breast model, are presented.
Results show that this integrated approach can be applied effectively in
the biomedical field. In English (Author abstract) 12 Refs. EI Order
Number: 98044155465
Medical image-based design of an individualized surgical guide for pedicle
screw insertion
Author(s): Van Brussel, K.; Vander Sloten, J.; Van Audekercke, R.;
Swaelens, B.; Richard, F.; Assaker, R.; Kulik, J.F.
Corporate Source: Katholieke Universiteit Leuven, Heverlee, Belgium
Source: Annual International Conference of the IEEE Engineering in
Medicine and Biology - Proceedings Proceedings of
the 1996 18th Annual International Conference of the IEEE Engineering in
Medicine and Biology Society. Part 1 (of 5) Oct
31-Nov 3 1996 n 1 1996 Amsterdam, Neth Sponsored by: IEEE 5 IEEE
Piscataway NJ USA p 225-226 ISSN:
0589-1019 CODEN: CEMBAD
Publication Year: 1996
Abstract: To reduce the complication risk of pedicle screw insertions it
may be unavoidable to introduce a certain degree of automation of the
critical surgical actions. The approach presented in this paper proposes a
mechanical drill guide that can be placed on the posterior surface of the
vertebra and indicates - by means of holes - the correct direction of the
pedicle screw. The CAD/CAM system Unigraphics enables a pre-operative
planning based on CT-images of the patient's spine. The CT-images also
yield surface information of the vertebra which along with the
pre-operative planning is translated into a drill guide design. The drill
guide concept has been optimized using non-linear finite element software
Marc K6.2. The guide is produced by stereolithography as rapid prototyping
technique using a Zeneca experimental resin which is sterilizable and USP
Class VI. Two prototypes have been developed and evaluated. In English
(Author abstract) 5 Refs. EI Order Number: 98034112845
*******************************************************************
Opinions, suggestions, and other controversial matter VOID where prohibited.
******************************************************************
Elaine T. Hunt, Director
Clemson University Laboratory to Advance Industrial Prototyping
206 Fluor Daniel Bldg. Clemson, SC 29643-0925
864-656-0321 (voice) 864-656-4435 (fax)
elaine.hunt@ces.clemson.edu
http://chip.eng.clemson.edu/rp/persall/elaine.html
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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