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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Matthew, D. Landrigan Ryan, K. Roeder |
| Copyright Year | 2007 |
| Abstract | The accumulation of fatigue damage in bovine and human cortical bone is conventionally measured by modulus or stiffness degradation. The initial modulus or stiffness of each specimen is typically measured in order to normalize tissue heterogeneity to a prescribed strain [1,2]. Cyclic preloading at 100 N for 20 cycles has been used for this purpose in both uniaxial tension and four-point bending tests [1–3]. In four-point bending, the specimen modulus is often calculated using linear elastic beam theory as, (1)E=3Fl4bh2ε where F is the applied load, l is the outer support span, b is the specimen width, h is the specimen height, and ε is the maximum strain based on the beam deflection [2]. The maximum load and displacement data from preloading is used to determine the initial specimen modulus. The initial modulus and a prescribed maximum initial strain are then used to determine an appropriate load for fatigue testing under load control. |
| Sponsorship | Bioengineering Division |
| Starting Page | 843 |
| Ending Page | 844 |
| Page Count | 2 |
| File Format | |
| ISBN | 0791847985 |
| DOI | 10.1115/SBC2007-175238 |
| Conference Proceedings | ASME 2007 Summer Bioengineering Conference |
| Language | English |
| Publisher Date | 2007-06-20 |
| Publisher Place | Keystone, Colorado, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Cycles Fatigue testing Euler-bernoulli beam theory Deflection Biological tissues Fatigue Displacement Stress Errors Stiffness Tension Bone Fatigue damage |
| Content Type | Text |
| Resource Type | Article |
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