| Autor: |
Quandieu, P., Pellieux, L., Nogues, C., Longevialle, C., Borredon, P. |
| Zdroj: |
Journal of Low Frequency Noise, Vibration and Active Control; June 1982, Vol. 1 Issue: 2 p45-61, 17p |
| Abstrakt: |
The exceptionally severe conditions of vibration and acceleration stresses sometimes encountered in aeronautics led the authors to develop a method to study the effects of such stresses on the spinal column. The experiment, conducted in a laboratory, specified the action of paravertebral muscle contraction on the transfer functions of intervertebral discs, and quantified the mechanical changes in the articular system resulting from the ablation of the nucleus pulposus. The validity of this method was tested through several types of examinations: radiological, histological, and physical. This latter test essentially included studies of the harmonic distortion of collected signals, of the coherence function relative to disc transfer functions, of signal amplitude and time average distribution histograms.The results of these examinations demonstrate the value of the method and the rationale of using a transfer function to study the response of the lumbar intervertebral disc to vibration. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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