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General Electric Postings

2 products »

Lead Supplier Quality Engineer- Fluid Systems

Qualifications/Requirements: * BS/BA Degree (Technical preferred). * A minimum of 5 years experience in supply chain management, quality or engineering. * Green Belt certified (GE employees only). Essential Responsibilities: * Responsible...

Advanced Manufacturing Engineer- Gas turbines and Steam Turbine

Job Purpose Develop the next generation, leading edge products for GE Energy customers. As an Advanced Manufacturing Engineer supporting Gas Turbines, you will: Work in a highly cross-functional environment with Engineering, Manufacturing, Sourci...

2 technical articles »

Novel Pogo-Pin Socket Design for Automated Low Signal Linearity Testing of CT Detector Sensor

Jan 30, 2019 | Mahesh Narayanaswamy

Due to the arrayed nature of the Computed Tomography (CT) Detector, high density area array interconnect solutions are critical to the functionality of the CT detector module. Specifically, the detector module sensor element, hereby known as the Multi-chip module (MCM), has a 544 position BGA area array pattern that requires precise test stimulation. A novel pogo-pin block array and corresponding motorized test socket has been designed to stimulate the MCM and acquire full functional test data. (...) This paper and presentation will focus on the socket design challenges and also key learnings from the design that can be applied to general test systems, including reliability testing. The secondary focus will be on the overall data collection and graphical user interface for the test equipment....

Intermetallic Growth in Tin-Rich Solders

Jun 13, 2017 | Louis Zakraysek

For tin-rich solder alloys, 200 C (392 F) is an extreme temperature. Intermetallic growth in tin-copper systems is known to occur and is believed to bear a direct relationship to failure mechanisms. This study of morphological changes with time at elevated temperatures was made to determine growth rates of tin-copper intermetallics. Preferred growth directions, rates of thickening, and notable changes in morphology were observed.

Each of four tin-base alloys was flowed on copper and exposed to temperatures between 100 C and 200 C for time periods of up to 32 days. Metallographic sections were taken and the intermetallics were examined. Intermetallic layer thickening is characterized by several distinct stages. The initial growth of side plates is extremely rapid and exaggerated. This is followed by retrogression (spheroidization) of the elongated peaks and by general thick-...

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