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Simulation Simplifies Materials Selection

Simulation Simplifies Materials Selection One promise of engineering software is routinely delivered: saving time and expense by limiting the building of prototypes and physical tests. Recent examples emerge from using simulation software in material performance predictions. Modules forecast how metal, composite, or polymer parts will respond to structural loads, drop tests, and thermal changes. One simulator found an optimum potting compound mix for thermal insulation and protection of integrated circuits, halving the cost of a conservative default mixture. Another simulator predicted nylon 6/6 performance, endorsing replacement of a metal pedal with plastic and cutting weight for automaker Citroen by 20%.

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Steel Disk Seals Protect Roller Bearings
SKF/North America

Steel Disk Seals Protect Roller Bearings NILOS-Ring steel disk seals available from SKF USA Inc. offer protection for grease-lubricated roller bearings in applications where wash-down or regular exposure to liquids may be required. Their design uniquely incorporates a VITON® gasket, which further enhances sealing performance, especially when liquids are in permanent...(more)

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Electronic Components Distribution . . .
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National's Audio Solutions Available from Digi-Key
gi-Key Corporation

New Pressure Sensor Solution Starting at €97 National's high-performance series brings dramatically improved sound quality to high-fidelity consumer and professional audio equipment. National manufactures Class AB and Class D amplifiers and audio subsystems for speakers, headphones, and ceramic and piezoelectric speakers. National makes it easier to design better, richer-sounding systems with our acclaimed Boomer® and Overture® lines. With the capability to process an order, from order entry to shipping, in as little as 15 mins., Digi-Key processes more than 99% of its orders the same day.

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Bearings & Bushings . . .
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What the Doctor Ordered

What the Doctor Ordered To assist paper mills in stopping a six week or less bearing replacement schedule, the doctor bearing was introduced in the early '90s. The multi-row radial bearings are still operating after a decade-plus of service. Adapting to white water processing, they eliminate corrosion, maintenance, paper web breaks, and unplanned downtime.

Choosing Custom Saves Cash

Choosing Custom Saves Cash  Custom parts usually boost expense, but a Midwestern antenna manufacturer found an exception to the rule. A review of options for bushings in an elevation assembly of a folding TV antenna for RVs showed that solid metal parts were more expensive than powder-metal parts and limited designers to off-the-shelf components.

Tools & Testing . . .
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World's Toughest Titanium

World's Toughest Titanium CalTech unveiled super-light, lower cost structural materials that may rival titanium. Created for aerospace components, the ductility, strength-to-weight ratio, and corrosion resistance of titanium baned metallic-glass composites are dubbed the toughest engineering materials in existence. Ongoing work aims to lower densities to the sub-5 g/cc range.

LEDing Us to Smarter Lighting

LEDing Us to Smarter Lighting Grand plan of a new NSF program: supplant the globe's commonest light source: incandescent bulbs. It's a tech that's changed little since foundational 1880s patents. RPI researchers will investigate solid-state technologies like light-emitting diodes that are more efficient, durable, and tunable than incandescent or fluorescent lamps.

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ID/OD Retaining Ring Lock
Smalley Steel Ring Company

ID/OD Retaining Ring Lock Try a spiral ring in both an internal and external groove at the same time. Install the ring in one groove, then compress the ring with the mating component into the second groove. When the grooves meet the ring snaps into place creating a low-cost, hidden, high strength, tamper-proof rotating joint. Learn more.

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Materials . . .
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Gone is the Wind

Gone is the Wind If applying lubricants, sealants, UV-curing adhesives, or cyanoacrylates delivers inconsistent, unrepeatable results, think about evaluating alternatives to your benchtop dispenser. This 'air free' system's driver uses a linear drive instead of pneumatic pressure, and promises of higher repeatability, dot-to-dot, than other units.

Mannequins on Your Mainframe

Mannequins on Your Mainframe With a decade-plus of history, digital human modeling's most significant advances may be recent tools from software vendors. They offer more integration with existing CAD/CAE systems enabling mainstream mechanical engineers to conduct analyses that had required high-end analytic tools and human factor or ergonomic specialists.

For more on this subject, subscribe to GlobalSpec's e-Newsletter DirectU2 The world of Design & Analysis Software.

Industrial Hardware . . .
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Fact or Friction Principles Manage Wear

Fact or Friction Principles Manage Wear What concepts dominate hardware decisions? Then also consider some new rules regarding oft-misunderstood mechanisms of friction and wear. Practical guidelines like 'prefer pivots to slides, and flexures to either'; but also lessons that might lead to low friction designs without lubricants, specialty materials, or rolling elements.

Buttons Can Control Your Tamper

Buttons Can Control Your Tamper Engineers deploy technologies to protect systems from unauthorized access, accidental triggering, or harm from environmental exposure like water jets. For panel control processes, choices include tamper-resistant, momentary, or maintained action pushbutton switches. Its above-panel profile of 1.8 mm ranks among the industry's shortest.

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Lighten Up with Tolerance Rings
USA Tolerance Rings

Lighten Up with Tolerance Rings Save on machining and steel costs. Welding tubes often causes distortion resulting in out of round conditions and the need for expensive machining of the tubes. Tolerance rings compensate for welding distortion, paint over spray, and misalignment, while allowing for indexing and the use of DOM tube and less expensive bearings.

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Careers & Commentary . . .
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Gain the Latest Project Management Credentials Online!
Villanova University Online

Gain the Latest Project Management Credentials Online! Gain the Latest Project Management Credentials Online!

Be among the first to receive PMBOK® Guide — Fourth Edition-based training. Learn 100% online from acclaimed Villanova University. Save up to $1,540 now!

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January 9, 2010 - Volume 5 Issue 1
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