A measurement system was designed to investigate longitudinal wave propagation through the lower extremity generated from foot strikes. The principal goal of the design was to eliminate measurement time lag and amplitude reduction, such that the acceleration measured by Skin Mounted Accelerometer—SMA is equal to the actual acceleration of the bone measured by Bone Mounted Accelerometer—BMA. For accurate dynamic measurement, it is important that the gain and phase of the measurement system are as close as possible to a constant and zero, respectively, for the frequency range being covered. An in vitro experiment was carried out to simultaneously measure skin and bone accelerations. The obtained information was used for identification of a linear spring/damper model representing the interface between the BMA and the SMA. The present work showed that the SMA overestimated the BMA by 12 percent in the signals between 15–30 Hz.
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February 1993
Research Papers
Measurement of the Impulsive Bone Motion by Skin-Mounted Accelerometers
W. Kim,
W. Kim
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
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A. S. Voloshin,
A. S. Voloshin
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
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S. H. Johnson,
S. H. Johnson
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
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A. Simkin
A. Simkin
Hadassah University Hospital, Jerusalem, Israel
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W. Kim
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
A. S. Voloshin
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
S. H. Johnson
Department of Mechanical Engineering and Mechanics, Institute for Biomedical Engineering, Lehigh University, Bethlehem, PA 18015
A. Simkin
Hadassah University Hospital, Jerusalem, Israel
J Biomech Eng. Feb 1993, 115(1): 47-52 (6 pages)
Published Online: February 1, 1993
Article history
Received:
March 5, 1991
Revised:
June 18, 1992
Online:
March 17, 2008
Citation
Kim, W., Voloshin, A. S., Johnson, S. H., and Simkin, A. (February 1, 1993). "Measurement of the Impulsive Bone Motion by Skin-Mounted Accelerometers." ASME. J Biomech Eng. February 1993; 115(1): 47–52. https://doi.org/10.1115/1.2895470
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