Piezoresistive sensors for force mapping of hip-prostheses
作者： V. Correia , V. Sencadas , M.S. Martins , C. Ribeiro , P. Alpuim
DOI: 10.1016/J.SNA.2013.03.013
关键词: Piezoresistive effect 、 Mechanical engineering 、 Strain gauge 、 Work (physics) 、 Sensitivity (control systems) 、 Biomedical engineering 、 Prosthesis 、 Force mapping 、 Materials science 、 Silicon 、 Gauge factor 、 Instrumentation (computer programming) 、 Electrical and Electronic Engineering 、 Electronic, Optical and Magnetic Materials 、 Surfaces, Coatings and Films 、 Condensed matter physics 、 Metals and Alloys
摘要: Abstract The success of artificial prosthetic replacements depends on the fixation component after being implanted in thighbone. This work shows a smart prosthesis based highly sensitive silicon thin-film piezoresistive sensors attached to hip prosthesis. performance for this application is studied and compared commercial strain gauge sensors. Mechanical stress–strain experiments were performed compressive mode, during 10,000 cycles data was acquired at mechanical vibration frequencies 0.5 Hz, 1 Hz 5 Hz, sent computer by means wireless link. results show that there decrease sensitivity (n-type nanocrystalline Si) when they are prosthesis, however does not compromise its monitoring performance. sensitivity, gauges, much larger due their higher factor (−23.5), gage (2).
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