Showing posts with label machine. Show all posts
Showing posts with label machine. Show all posts

Tuesday, April 19, 2011

Yale student killed in machine shop accident

A Yale University senior, Michele Dufault, was killed last night in an accident in the chemistry department machine shop. Although the university says only that it was “a terrible accident involving a piece of equipment,” the New Haven Register reports that Dufault’s hair was caught in a spinning lathe and was dead when emergency responders arrived.


Dufault was an astronomy and physics major who helped organize the Northeast Conference for Undergraduate Women in Physics in January.


An AP story says that “The university told the U.S. Occupational Safety and Health Administration that Dufault was operating the machinery for a senior project when she was killed.” A commenter to a Yale Daily News story says that “Michele was very competently trained. She took two semesters of shop training and knew her way around the machines.”


C&EN has its annual staff meeting over the rest of the week, so I’ll try to keep tabs on this but will largely be otherwise occupied. As more information comes out, feel free to post it in the comments.


And remember this basic safety rule that applies to the lab as much as machine shops: Tie back long hair.


Other blogosphere discussion so far: CENtral Science’s own Transition States, Chemistry Blog, The Great Beyond


Update from Yale University President Richard C. Levin, via an e-mail from the university’s public affairs office:



Last night, Michele’s hair got caught in a lathe as she worked on a project in the student machine shop in the Sterling Chemistry Laboratory. Her body was found by other students who had been working in the building. They called the police, who responded immediately.


Michele was an exceptional science student who was pursuing a B.S. in astronomy and physics. She also had keen interest in oceanography and was intending to undertake work in that field after graduation. She was an enthusiastic saxophonist in the Yale Band, and a widely admired member of the Saybrook College community.


The safety of our students is a paramount concern. The University has programs to train students before they use power equipment. Nonetheless, I have initiated a thorough review of the safety policies and practices of laboratories, machine shops, and other facilities with power equipment that is accessed and operated by undergraduates. This includes arts as well as science facilities. Steven Girvin, Deputy Provost for Science and Technology, will lead the review. Until the review is completed, Yale College will limit undergraduate access to facilities with power equipment to hours that will be specified by the end of the week; monitors will be present at these times in all such locations.


 

Sunday, March 6, 2011

Nanotechnology used to prolong machine and engine life

Guojun Liu has discovered a way to use nanotechnology to reduce friction in automobile engines and machines.


"The technology should be useful in a wide range of machineries other than automobile engines," says Dr. Liu, a professor in the Department of Chemistry and an expert in polymer synthesis. "If implemented industrially, this nanotechnology should help prolong machine life and improve energy efficiency."


Dr Liu's team prepared miniscule polymer particles that were only tens of nanometers in size. These particles were then dispersed in automobile engine base oils. When tested under metal surface contact conditions that simulated conditions found in automobile engines, these tiny particles were discovered to have an unprecedented friction reduction capability.


Even at a low concentration, the nanoparticles performed much better than the friction additive that is currently used by many industries. They were able to reduce friction by 55 per cent more than the currently achievable rate.


Dr. Liu's discovery has earned the Society of Tribologists and Lubrication Engineers' Captain Alfred E. Hunt Memorial Award.


This is the first research that Dr. Liu has done in the field of friction reduction and lubrication.


Story Source:


The above story is reprinted (with editorial adaptations) from materials provided by Queen's University.