The Madison Group Info@madisongroup.com madisoongroup.com What Went Wrong? The actuating levers on a high number of medical components cracked after a relatively short time in service, resulting in failure of the devices. The levers were injection molded from a poly(acrylonitrile:butadiene:styrene) (ABS) resin. The failures were isolated to a few installation locations. The Madison Group 2615 Research Park Drive Madison WI, 53711 USA Ph: (608) 231-1907 madisongroup.com Evaluation Visual and microscopic examinations of the failed levers re- vealed features associated with brittle fracture, without signs of macro or micro ductility. The observed irregul

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