The NTSB has released an extensive set of photos that graphically depict mind-boggling negligence in Boston's Big Dig. Poor engineering, incompetence and perhaps worst, an utter lack of inspection over a known problem resulted in death, injury, runaway costs and endless inconvenience for drivers. Imagine driving over a bridge with visibly dangerous cracks in the girders - and doing nothing about them. That is the story of the Big Dig ceiling.
Tell us what you think after viewing these dramatic photos. When it comes to trust in public works, they are alarming to say the least.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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.