The replacement of well-characterized thermoset matrix composites with thermoplastic composites is being driven by the increasing need for recyclability, as well as the potential for much faster cycle ...
Can a ball screw with a reasonable amount of preload but no outside thrust last forever? Eschatological considerations aside, it's not likely. The balls still have to resist the internal, preload ...
EPRI (Electric Power Research Institute) reports that 7FA gas turbines have a rotor life of about 144,000 hours, or 5,000 starts. The primary life-limiting factor is high cycle fatigue cracks ...
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