General Electric Company

Saint-gobain Performance Plastics Corporation

Qing Gao

Yue Dong

Renwei Yuan

Howard Paul Weaver

Xiaobin Chen

Thomas Edward Wickert

Yingna Wu

Yingbin Bao

Richard Leigh Adrian

Xiaonan Zhu

Eric Zhao

The subject application relates to polyurethane foam and methods of forming the same. A polyurethane foam may include a first polyol component and a second polyol component. The first polyol component may include a polyether polyol having a functionality of at least about 5. The second polyol component may include at least one component selected from the group of a polyether polyol having a functionality of not greater than about 4, and a polyester polyol having a functionality of not greater than about 4.

Polyurethane foam and methods of forming the same

An ultrasonic roller burnishing system comprises a roller and a controller. The roller is configured to be pressed against a surface of a workpiece to a pressing depth, roll on the surface at a feed rate, and vibrate at an ultrasonic frequency under a back pressure. The roller is pressed and rolled by a motion unit which is driven by a drive motor. The vibrating of the roller is driven by an ultrasonic vibration unit with an input current inputted thereinto. The controller is configured to adjust at least one of the pressing depth, the back pressure, the input current and the feed rate based on an expected residual compressive stress and a real time output power of the drive motor, to generate a residual compressive stress in the workpiece which is in an expected range predetermined based on the expected residual compressive stress.

Ultrasonic roller burnishing system and method, and method for machining component

An apparatus includes an electrode assembly comprising a carriage having a plurality of electrode holders, the electrode holders being respectively configured to detachably receive a plurality of electrodes, the electrodes include a plurality of first electrodes and a plurality of second electrodes. The first electrodes are configured for rough machining a workpiece by electric discharging or wire electric discharging to remove material from the workpiece, the second electrodes are configured for finish machining the rough machined workpiece by electric discharging to remove material from the rough machined workpiece.

Method and apparatus for machining workpiece

Certain embodiments of the present disclosure are directed to a stretch removable adhesive tape comprising a thermoplastic polyurethane film having a unique combination of properties leading to a unique stretch removal profile.

Stretch removable adhesive tapes and preparation method and application thereof

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Shanghai, China

Qing Gao