The National Fluid Power Association (NFPA) published a new ISO
standard --ISO 5781:2000--that addresses the interchangeability of valves in
hydraulic systems. Valves covered in the new standard include pressure-reducing
valves, sequence valves, unloading valves, throttle valves, and check valves.
The standard applies to valves used in industrial equipment such
as machine tools and packaging equipment. It specifies dimensions and other
characteristics of the surfaces on which the valves are mounted.
NFPA is making the documents available for $43 for NFPA members.
To order, contact NFPA's publication department at (414) 778-3353 or firstname.lastname@example.org.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.