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This section was written by Associate Editor Jean
Thilmany |
computing |
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Circling
the Globe
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A company that goes global can't
afford to keep its technology local. That's the advice of Patrick
Seeber, group information manager at Element Six, formerly known as De
Beers Industrial Diamonds, of Gauteng, South Africa.
The supplier of abrasives and industrial diamond materials recently implemented
technology to ensure that design and data management can be effectively
moved across continents. The company operates its diamond research laboratory
in South Africa and has processing and manufacturing facilities there
and in Ireland, Sweden, the Netherlands, and England.
"We develop our products globally and know that this requires effective
management of every phase of the process to succeed in the long term,"
Seeber said.
Project teams use design and data management software from CoCreate of
Fort Collins, Colo. Members hold virtual meetings in the software's
meeting center, which allows employeesno matter where they workto
discuss, inspect, and change drawings and models.
The software is a decided step up from the way team members formerly communicatedvia
fax, e-mail, and airplane trips.
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More
Than a Helmet
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Today's sports helmets don't
just minimize risk of injury; they're tools toward victory.
Now, ski and snowboard helmets merge fashionable design, comfortable fit,
and an aerodynamic design that, in some cases, can shave precious microseconds
off a world-class athlete's performance time.
That's why the German Ski Association recently asked the sports
helmet manufacturer Casco and design agency TargetDesign to improve on
the officially approved helmet.
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| When they were asked to come up
with a new helmet for the German Ski Association, designers at TargetDesign
first modeled the helmet in 3-D, then fitted it on digital skiers. |
The designers performed motion studies in a wind tunnelusing actual
athletesand then on a glacier. In both environments, they studied
the posture of racing skiers, said Hans-Georg Kasten, TargetDesign's chief
executive officer.
"As designers, we're not only responsible for aesthetics, we must be focused
on aerodynamics and velocity as well. A designer is pulling all the strings,"
he said.
The results from wind tunnel and glacier testing determined the shape
of the future helmet. The team discovered that a helmet designed without
the conventional spoilermeant to distribute air around the bottom
of the wearer's facewould be more aerodynamic and increase speed,
contrary to previous belief, Kasten said.
The designers stored the study results as videotape, sketches, and photographs.
"I took pictures of the athletes in several postures when we were on the
glacier and in the wind tunnel," said Rolf Schiller of TargetDesign. "On
my laptop, I scaled their pictures and put them on top of each other,
layer by layer. The result was that all the skiers, no matter what body
height or build, always had the exact same posture.
Schiller used these templates to generate initial 3-D models of a skier
wearing a helmet. For this, he used the design software StudioTools from
Alias Systems Corp. of Toronto.
Designers tested the 3-D helmet on a computer model of a head to make
sure it would sit and function properly.
| "I
took pictures of the athletes when we were on the glacier and in the
wind tunnel." |
"With this tool, designers were able to meet the requirements of different
shapes and sizes of faces, ensuring ergonomic conformity and harmony of
face and helmet with goggles," Kasten said.
Casco then built a prototype helmet, using its proprietary CAD tools and
rapid prototyping equipment. The TargetDesign team and the skiers then
returned to the wind tunnelwith the skiers wearing the prototype
this timeto get the results.
They clocked air resistance at a speed of 100 miles per hour to confirm
that the new design was more aerodynamically and ergonomically efficient
than the ski association's previously designed, more conventional helmets,
Schiller said.
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Reverse Flight Assembly
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It's not really that hard, sometimes,
to fly by the seat of your pants.
That's what engineers at business-jet maker Gulfstream discovered
when they wanted to obtain a three-dimensional digital model of the Gulfstream
IV skin panel assemblies. The engineers needed that model to produce a
numerical control program necessary for the skin panel's new manufacturing
process.
There was one hitch: The model had never existed in digital format. So
how would the engineers get a digital CAD version?
The engineers weren't stymied for long. They used computer-aided
measurement technology to essentially reverse-engineer the master physical
surface. They used much the same technology to find data for the fasteners
and cutouts.
In this way, the engineers were able to reverse-engineer the part into
their CAD system.
The CAM technology included a laser tracker from Leica Geosystems of San
Ramon, Calif., to trace the part, a Faro Arm from Faro Technologies Inc.
of Lake Mary, Fla., to trace and measure fastener locations and cutouts,
and CAM software from Metrix Corp. of Montreal. For CAD, Gulfstream uses
Catia from Dassault Systèmes of Paris.
With the digital model now available, the engineering team can manage
the design data and can more easily hand off changes in the file to manufacturing.
Gulfstream has also freed up its storage facilities, because it no longer
has to house surface masters and tooling masters, said a Gulfstream spokesman.
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A Piece of the Virtual Pie
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Let the early adopters have their fun,
then take advantage of falling prices later.
That's the thinking of Brett Stevens, deputy director of postgraduate
computing programs at the University of Portsmouth in Portsmouth, England.
"Ever since I first saw a large-scale virtual reality system demonstrated
five years ago, I knew I wanted one," Stevens said. "But the technology
was expensive and not very robust."
Five years later, Stevens has his wish. He sought a system that would
include both front- and rear-projection screens to provide the maximum
screen area in the relatively small space the university could allot.
Haptic
technology enables
users to "feel" that they are sculpting clay. |
Before he started shopping, Stevens first configured his dream system
on paper. It would boast a 16.5-foot central screen, which would be rear
projected so someone could walk right up to the screen and not lose the
illusion of being part of the virtual environment.
Virtalis of Cheshire, England, designed the system Stevens envisioned.
It also includes two Phantom haptic manipulators from SensAble Technologies
Inc. of Woburn, Mass., which allow students to feel as though they're
sculpting virtual clay when creating physical prototypes.
Make no mistake, the school's newest addition isn't just for engineering
students, said Steve Hand, head of the Department of Creative Technologies.
"Our students follow a wide range of courses, but all feature an arts
orientation with an understanding of how technology can support creativity,"
he said. "We provide the latest tools for them to explore in the expectation
that they'll take this knowledge into the industry after graduation."
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Fleet of Fleet Buses
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Catch one of the buses circling the airport
gates, take it to your rental car company, and you've likely just
taken a ride on a bus made by Gillig Corp. of Hayward, Calif.
The company manufactures fuel-efficient diesel buses not only for regional
transit, but also for airports and tourist operations like Disney World.
In fact, Gillig builds about 25 buses a week.
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| Bus maker Gillig Corp. of Hayward,
Calif., recently brought in new software to organize its many CAD
files and keep them within reach. |
That's a lot of buses and they require a plethora of design documents,
which must be tracked and stored. The company recently implemented software
called Adept from Synergis Technologies Inc. of Quakertown, Pa., to manage
design documents, said Jim McKittrick, CAD manager.
Because the company uses a variety of CAD systems, part drawings were
sometimes difficult to track down. McKittrick implemented a feature within
the software called a library card, which lets users plug in names or
numbersrather like a search engineto locate the files
by part number, designer, project name, or other criteria.
The new software has helped to streamline CAD file searches, McKittrick
said.
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No More Manual Beams
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To automate its mass-design and mass-production
processes, New Columbia Joist Co. of New Columbia, Pa., is using customized
engineering software.
The steel joists that the company sells are beam-like structures used
to support loads like floors and roofs.
Before implementing the new, customized software, the company took orders,
obtained estimates, procured materials, and designed the joints manually.
Which means that employees manually transferred their data throughout
the steps involved with that process, said Drew Potts, engineering manager
at New Columbia Joist.
In order to automate the entire process, the technology vendor netGuru
Inc. of Waltham, Mass., customized its Stadd.pro software, which is used
to automate workflow.
"The challenge is to customize Staad to our particular needs, which
include handling an unusually large amount of engineering and production
data," Potts said.
He expects the new application to boost the joist maker's productivity.
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Curvy Blocks
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A toy maker faced a dilemma: It wanted
to make a curvy toy rally car from its snap-together, plastic geometric
building blocks. How could kids construct a curving car from the blocks?
To solve the problem, Mega Bloks of Montreal turned to digital tools and
processes commonly used by major automakers. These methods included three-dimensional
scanners and reverse-engineering technology, as well as computer-aided
design and computer-aided manufacturing software.
The company's design team started with a series of sketches in
the style of European rally cars. The sketches were the basis for a clay
model.
"We needed the car to be recognizable to the people who love rally
cars, without stepping into the legalities of licensing," said
Yanick Tremblay, design coordinator.
To save time and clay, the designers modeled only half the car, sculpting
the clay over the company's building blocks and then using a mirror
to achieve symmetry.
"We could change the shape of the car in hours rather than days,"
Tremblay said. "If we were creating a CAD model, we would have
spent maybe a month generating the shape."
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| Toy maker Mega Bloks used a number
of engineering technologies and processes to turn a small model of
a rally car into a toy that is built from plastic blocks. |
In order to get measurements, the designers reverse-engineered the clay
model. For this task, they first scanned the model using equipment from
Creaform Inc. of Levis, Quebec. That system includes a laser scanner that
has an integrated arm, positioned by a coordinate measurement machine.
The laser line sweeps across the clay model, obtaining the required measurements
in approximately 10 minutes.
The designers then imported the point cloud into Geomagic Studio from
Raindrop Geomagic of Research Triangle Park, N.C. Automakers use this
reverse-engineering software to create CAD models for engineering analysis.
The design team then imported the initial graphics exchange specification
file into the SolidWorks CAD system, the same software the company uses
to design its block-style building systems.
Designers used SolidWorks to split the car into aesthetically pleasing
parts that could be created from the company's blocks and would
be easy for a child to build with.
"Through the process of integrating this rather high-definition
shape with our very basic blocks, we needed to make sure that everything
fell into place, snapped together, and was sturdy, but also safe for the
child," Tremblay said.
A Ford GT has since joined the Rally Car in the Pro-Builder toy line put
out by Mega Bloks.
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Briefly
Noted
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McLaren Software of Glasgow, Scotland, has released Enterprise
Engineer 2.5.1 Service Pack 1, an upgrade to its EMC Document application.
The upgrade provides content management and handling for documents.
Hanley Innovations of Ocala, Fla., which makes software for aerodynamics
conceptual design and analysis, has released VisualFoil Plus for airfoil
two-dimensional design and analysis.
SoftMEMS of Los Gatos, Calif., has upgraded its MEMS Pro product,
a CAD tool for the design and analysis of MEMS, including associated electronics
and packaging.
Sycode of Goa, India, launched Mesh to Solid, a software with
the capability to create a solid from a triangular or quad mesh.
To emphasize its role in viewing drawings from AutoCAD, SolidWorks
of Concord, Mass., has changed the name of its eDrawings product to DWGviewer.
Wolfram Research of Champaign, Ill., has released Mathematica
CalcCenter 3 software for technical mathematical calculations.
Delcam of Birmingham, England, is set to launch three new versions
of its PowerInspect inspection software. In addition to an upgrade to
the existing manual version of the software, the new versions will support
CNC-based inspection techniques and on-machine verification.
The developer of GibbsCam computer-aided manufacturing software, Gibbs
and Associates of Moorpark, Calif., has released an upgrade, GibbsCAM
2005+.
Computer-aided engineering software maker Dassault Systèmes
of Paris has acquired Abaqus of Providence, R.I., which makes finite
element analysis software.
Flomerics of Marlborough, Mass., now includes thermal models
of Sunon fans on its SmartParts3D Web site, so engineers can incorporate
the fans into thermal simulations.
CD-adapco of London has released Star-CD version 3.24 for computational
fluid dynamics. It includes a general-purpose combustion model capable
of simulating the combustion process within gasoline, diesel, and hybrid
concept engines.
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