Viscoelastic properties of the nucleus pulposus of the intervertebral disk in compression
The viscoelastic properties of the nucleus pulposus were measured in compression for 35 specimens dissected from 9 sheep. Measurements on 19 specimens were made on the day of slaughter; the remaining 16 specimens were stored frozen and thawed before testing. A preload of 0.2 N was applied to each sp...
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| Veröffentlicht in: | Journal of materials science. Materials in medicine 2001-08, Vol.12 (8), p.689-692 |
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| creator | Leahy, J C Hukins, D W |
| description | The viscoelastic properties of the nucleus pulposus were measured in compression for 35 specimens dissected from 9 sheep. Measurements on 19 specimens were made on the day of slaughter; the remaining 16 specimens were stored frozen and thawed before testing. A preload of 0.2 N was applied to each specimen and a cyclic compression of 10 microm applied at eight frequencies in the range 0.1-10 Hz at a temperature of 37 degrees C. Freezing appeared to increase the storage modulus, E ', but not the loss modulus, E ", or tan delta=E "/E '. These parameters, E ', E " and tan delta, had values of 64+/-28 kPa, 24+/-11 and 0.33 kPa+/-0.07, respectively. The value of tan delta passed through a minimum at a loading frequency of 0.9+/-0.2 Hz. The water content of the specimens was 80+/-2%. |
| doi_str_mv | 10.1023/A:1011212425029 |
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Measurements on 19 specimens were made on the day of slaughter; the remaining 16 specimens were stored frozen and thawed before testing. A preload of 0.2 N was applied to each specimen and a cyclic compression of 10 microm applied at eight frequencies in the range 0.1-10 Hz at a temperature of 37 degrees C. Freezing appeared to increase the storage modulus, E ', but not the loss modulus, E ", or tan delta=E "/E '. These parameters, E ', E " and tan delta, had values of 64+/-28 kPa, 24+/-11 and 0.33 kPa+/-0.07, respectively. The value of tan delta passed through a minimum at a loading frequency of 0.9+/-0.2 Hz. The water content of the specimens was 80+/-2%.</description><identifier>ISSN: 0957-4530</identifier><identifier>EISSN: 1573-4838</identifier><identifier>DOI: 10.1023/A:1011212425029</identifier><identifier>PMID: 15348239</identifier><language>eng</language><publisher>United States: Springer Nature B.V</publisher><subject>Biomedical materials ; Food science ; Materials science ; Rheology</subject><ispartof>Journal of materials science. 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| subjects | Biomedical materials Food science Materials science Rheology |
| title | Viscoelastic properties of the nucleus pulposus of the intervertebral disk in compression |
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