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Why bigger isn’t always better: the case for thin section bearings

For applications that demand maximum performance despite space and/or weight restrictions, designers should consider thin section bearings. While conventional bearings often have more load capacity, thin section bearings have more than enough for a wide range of applications and offer exceptional design flexibility with opportunities for significant reductions in overall system size and cost. A new white paper from Kaydon Bearings, an SKF Group company, examines thin section bearing styles and features, with a discussion of design considerations, fit, lubrication, and other useful information.

Posted in: Mechanical Components, White Papers

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Ultrasound Creates 3D Haptic Shapes

Touch feedback, known as haptics, has been used in entertainment, rehabilitation, and even surgical training. University of Bristol researchers, using ultrasound, have developed an invisible 3D haptic shape that can be seen and felt.Led by Dr Ben Long and colleagues Professor Sriram Subramanian, Sue Ann Seah, and Tom Carter from the University of Bristol’s Department of Computer Science, the research could change the way 3D shapes are used.  The new technology could enable surgeons to explore a CT scan by enabling them to feel a disease, such as a tumor, using haptic feedback.By focusing complex patterns of ultrasound, the air disturbances can be seen as floating 3D shapes. Visually, the researchers have demonstrated the ultrasound patterns by directing the device at a thin layer of oil so that the depressions in the surface can be seen as spots when lit by a lamp.The system generates an invisible three-dimensional shape that can be added to 3D displays to create an image that can be seen and felt. The research team have also shown that users can match a picture of a 3D shape to the shape created by the system. SourceAlso: Learn about an Ophthalmic Ultrasound System for Ocular Structures.

Posted in: News

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Brian Trease, Mechanical Engineer, NASA’s Jet Propulsion Laboratory, Pasadena, CA

Brian Trease, JPL Mechanical Engineer, uses origami principles to design large-scale and small-scaled deployable structures. In 2013, Trease collaborated with experts to develop an 82-ft circular solar array that folds up to be 8.9 feet in diameter.

Posted in: Who's Who

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The Value of FDM Jigs and Fixtures: Who, What, Where, When & Why

Manufacturing relies on tools including jigs, fixtures, templates and gauges to maintain quality and production efficiency. Although these tools are virtually invisible when production is running smoothly, their importance becomes evident when problems arise.

Posted in: On-Demand Webinars

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Key Factors to Consider When Determining the Best Curing Technology for your UV Assembly Process

Manufacturers are under constant pressure to reduce costs and improve efficiencies within their manufacturing processes in order to increase profitability. With recent advancements in LED technology, new possibilities open up and a growing number of manufacturers are considering switching from lamp to LED technology for their UV processes. Lamp technology still has advantages in certain applications, as there are benefits and limitations to both technologies depending on the specific application. This webinar will discuss the factors to consider when determining whether lamp or LED technology is best suited for your application and how each technology can be utilized in a well-developed UV process to ensure repeatable product assembly.

Posted in: On-Demand Webinars

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Radiation Hard By Design (RHBD) Electronics

Under certain conditions, a false signal will be absorbed and a correct signal will be generated. Goddard Space Flight Center, Greenbelt, Maryland Current RHBD electronics are limited to speeds that approximate 250 MHz, regardless of the electronic process. The fact that determines the final speed is based on the nature of the current SEU (single-event upsets) radiation-tolerant latches, and the data flow between the latches through combinational logic.

Posted in: Semiconductors & ICs, Briefs

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Detecting Loss of Configuration Access of Reprogrammable FPGA Without External Circuitry

This innovation makes use of the clearing of distributed memory that results from configuration refreshes. Langley Research Center, Hampton, Virginia The configuration of the reprogrammable field-programmable gate array (FPGA) currently on the market is very susceptible to single event upset when it operates in radiation environments. The current state-of-the-art approach is to refresh the configuration while the FPGA is operating. When using this approach, it is essential to detect the loss of configuration access while the FPGA is operating in a radiation environment, allowing the system to initiate a configuration access recovery.

Posted in: Semiconductors & ICs, Briefs

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