Manufacturing Industry
Atomic simulation of cracks shows how nanomaterials fail.(TESTING CHARACTERIZATION)
Advanced Materials & Processes, March, 2006
An atom-by-atom simulation of cracks forming and spreading that may help explain how materials fail in nanoscale devices, airplanes, and even in the Earth itself during a quake has reportedly been developed at the Massachusetts Institute of Technology, Cambridge, Mass. "Classical theories of crack dynamics are valid only in a small range of material behavior," says Markus J.
Buehler, principal investigator in the Atomistic Mechanics Modeling Group in MIT's Department of Civil and Environmental Engineering. "Our results represent a major breakthrough in understanding how cracks propagate in a variety of brittle materials, and our theory helps explain experimental and computational observations that have been poorly understood so far." [ILLUSTRATION OMITTED]...
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