Feed Mechanism and Method for Feeding Minute Components

Electrical circuits such as printed wiring boards or hybrid microcircuits designed to utilize surface mount electrical components are commonly assembled by computer-controlled automated equipment. These machines typically use a vacuum nozzle to pick up and handle the components during assembly. Three methods are commonly used to feed surface mount components to automatic assembly equipment: tape reel feeders, linear or bowl-type vibratory feeders, or waffle-style packages.

Posted in: Briefs, Mechanical Components
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Vibration-Dampening Pedestal for MEMS

Microelectromechanical systems (MEMS) are critical devices for various highly sensitive applications; however, the development and potential fielding of these next-generation smart systems is currently impeded by the inability to satisfy the stringent performance standards for precision and control. These advanced smart systems currently suffer from severe inaccuracies caused by a critical failure of a MEMS inertial measurement unit (IMU), i.e., the angular rate sensor (ARS).

Posted in: Briefs, Mechanical Components
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Self-Healing, Self-Lubricating Tribofilm

Tribologists have developed a diamond-like film that is generated by the heat and pressure of an automotive engine. The ultra-durable, self-lubricating tribofilm — a film that forms between moving surfaces — can be made to develop self-healing, diamondlike carbon (DLC) tribofilms. The film generates itself by breaking down the molecules of the lubricating oil, and can regenerate the tribofilm as it is worn away.

Posted in: Briefs, Materials
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Fiber-Optic Environmental Radiation Dosimeter

An all-optical, fiber-optic-coupled remote radiation sensor was developed using luminescent, copper-doped quartz material. The key to the technology is the doped quartz material, which produces a luminescence signal that is directly proportional to the radiation dose.

Posted in: Briefs, Photonics
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Functionally Graded Metal-Metal Composite Structures

NASA Langley Research Center has developed a functionally graded metal-metal composite structure. The structure is created using a method that avoids deleterious reactions between the different metal constituents, as would be observed via conventional melt processing. The results are unique alloy compositions and arrangements not typically available through conventional processing routes.

Posted in: Briefs, Materials
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Compact, Portable Device for Structural Vibration Reduction

Tuned mass dampers are used worldwide to mitigate vibrations in structures like buildings and bridges where excessive movement can be alarming or even sickening to occupants. The vast majority are multi-ton devices that occupy an average of 1,000 square feet, and are complex and costly to install, tune, and maintain.

Posted in: Briefs, Mechanical Components
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Robotic Inspector Traverses Water Pipes

Today's water distribution systems lose an average of 20 percent of their supply because of leaks. Current leak-detection systems are expensive and slow to operate, and they don't work well in systems that use wood, clay, or plastic pipes. A robotic system developed by researchers at MIT could provide a fast, inexpensive way to find even tiny leaks with pinpoint precision, no matter what the pipes are made of.

Posted in: Briefs, Motion Control
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Robotic Gripper Cleans Up Space Debris

Large amounts of existing space debris pose a threat to satellites, space vehicles, and astronauts aboard those vehicles. However, cleaning up the debris is problematic. For example, suction cups don't work in a vacuum, and traditional sticky substances like tape are largely useless because the chemicals they rely on can't withstand extreme temperature swings.

Posted in: Briefs, Motion Control
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Computational Tool Simplifies Creating Machines That Bend

Replacing rigid joints and linkages with mechanisms that bend offers a number of potential advantages, even as it makes designing devices more difficult. A computational design tool developed by Disney Research promises to make this transition from rigid to compliant mechanisms easier. The tool can take a design for a conventional, rigidly articulated device and automatically substitute parts that achieve the same function through flexibility, drawing from existing catalogs of compliant mechanisms.

Posted in: Briefs, Motion Control
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Electromagnetic Actuator Decouples Linear and Rotary Motions

A lightweight module for rapid, accurate, and versatile positioning of semiconductor chips features a novel electromechanical actuator that can move objects both linearly and rotationally. The technology was developed by researchers at the A*STAR Singapore Institute of Manufacturing Technology (A*STAR SIMTech) and National University of Singapore (SIMTech-NUS) Joint Lab.

Posted in: Briefs, Motion Control
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