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Piezoresistive sensors for force mapping of hip-prostheses

Journal Article


Abstract


  • The success of artificial prosthetic replacements depends on the fixation of the artificial prosthetic component after being implanted in the thighbone. This work shows a smart prosthesis based on highly sensitive silicon thin-film piezoresistive sensors attached to a hip prosthesis. The performance of the sensors for this application is studied and compared to commercial strain gauge sensors. Mechanical stress-strain experiments were performed in compressive mode, during 10,000 cycles and data was acquired at mechanical vibration frequencies of 0.5 Hz, 1 Hz and 5 Hz, and sent to a computer by means of a wireless link. The results show that there is a decrease in sensitivity of the thin-film silicon piezoresistive (n-type nanocrystalline Si) sensors when they are attached to the prosthesis, however this decrease does not compromise its monitoring performance. The sensitivity, compared to that of commercial strain gauges, is much larger due to their higher gauge factor (-23.5), when compared to the gage factor of commercial sensors (2). © 2013 Elsevier B.V. All rights reserved.

UOW Authors


  •   Correia, Vítor (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Martins, M S. (external author)
  •   Ribeiro, Clarisse (external author)
  •   Alpuim, P (external author)
  •   Rocha, José Gerardo (external author)
  •   Morales, I (external author)
  •   Atienza, C (external author)
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2013

Citation


  • Correia, V., Sencadas, V., Martins, M. S., Ribeiro, C., Alpuim, P., Rocha, J. G., Morales, I., Atienza, C. & Lanceros-Méndez, S. (2013). Piezoresistive sensors for force mapping of hip-prostheses. Sensors and Actuators A: Physical, 195 133-138.

Scopus Eid


  • 2-s2.0-84876230503

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3691

Number Of Pages


  • 5

Start Page


  • 133

End Page


  • 138

Volume


  • 195

Abstract


  • The success of artificial prosthetic replacements depends on the fixation of the artificial prosthetic component after being implanted in the thighbone. This work shows a smart prosthesis based on highly sensitive silicon thin-film piezoresistive sensors attached to a hip prosthesis. The performance of the sensors for this application is studied and compared to commercial strain gauge sensors. Mechanical stress-strain experiments were performed in compressive mode, during 10,000 cycles and data was acquired at mechanical vibration frequencies of 0.5 Hz, 1 Hz and 5 Hz, and sent to a computer by means of a wireless link. The results show that there is a decrease in sensitivity of the thin-film silicon piezoresistive (n-type nanocrystalline Si) sensors when they are attached to the prosthesis, however this decrease does not compromise its monitoring performance. The sensitivity, compared to that of commercial strain gauges, is much larger due to their higher gauge factor (-23.5), when compared to the gage factor of commercial sensors (2). © 2013 Elsevier B.V. All rights reserved.

UOW Authors


  •   Correia, Vítor (external author)
  •   Gomes da Silva Sencadas, Vitor
  •   Martins, M S. (external author)
  •   Ribeiro, Clarisse (external author)
  •   Alpuim, P (external author)
  •   Rocha, José Gerardo (external author)
  •   Morales, I (external author)
  •   Atienza, C (external author)
  •   Lanceros-Méndez, Senentxu (external author)

Publication Date


  • 2013

Citation


  • Correia, V., Sencadas, V., Martins, M. S., Ribeiro, C., Alpuim, P., Rocha, J. G., Morales, I., Atienza, C. & Lanceros-Méndez, S. (2013). Piezoresistive sensors for force mapping of hip-prostheses. Sensors and Actuators A: Physical, 195 133-138.

Scopus Eid


  • 2-s2.0-84876230503

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3691

Number Of Pages


  • 5

Start Page


  • 133

End Page


  • 138

Volume


  • 195