Residual Stress in Bone Structure: Experimental Observation and Model Study with Uniform Stress Hypothesis

Biomechanics ◽  
1996 ◽  
pp. 169-184 ◽  
Author(s):  
M. Tanaka ◽  
T. Adachi
Keyword(s):  
Residual Stress ◽  
Experimental Observation ◽  
Bone Structure ◽  
Uniform Stress ◽  
Model Study

Uniform Stress State in Bone Structure With Residual Stress

1998 ◽  
Vol 120 (3) ◽  
pp. 342-347 ◽  
Author(s):  
T. Adachi ◽  
M. Tanaka ◽  
Y. Tomita
Keyword(s):  
Residual Stress ◽  
Stress State ◽  
Cancellous Bone ◽  
Bone Structure ◽  
Circumferential Direction ◽  
Uniform Stress ◽  
Model Study ◽  
Uniform Stress State ◽  
Cancellous Bone Structure ◽  
Living Tissues

Residual stress and strain in living tissues have been investigated from the viewpoint of mechanical optimality maintained by adaptive remodeling. In this study, the residual stresses in the cortical-cancellous bone complex of bovine coccygeal vertebrae were examined. Biaxial strain gages were bonded onto the cortical surface, so that the gage axes were aligned in the cephalocaudal and circumferential directions. Strains induced by removal of the end-plate and the cancellous bone were recorded sequentially. The results revealed the existence of compressive residual stress in the cortical bone and tensile residual stress in the cancellous bone in both the cephalocaudal and the circumferential direction. The observed strains were examined on the basis of the uniform stress hypothesis using a three-bar model for the cephalocaudal direction and a three-layered cylinder model for the circumferential direction. In this model study, the magnitude of effective stresses, which is defined as the macroscopic stress divided by the area fraction of bone material, was found not to differ significantly between cephalocaudal and circumferential directions, although they were evaluated using independent models. These results demonstrate that the uniform stress state of the cortical-cancellous bone structure is consistent with results obtained in the cutting experiment when the existence of residual stress is taken into account.

Residual Stress in Bone Structure

2014 ◽  
Vol 19 (4) ◽  
pp. 4_34-4_39
Author(s):  
Shigeru TADANO
Keyword(s):  
Residual Stress ◽  
Bone Structure

Residual Stress Induced from Bone Structure and Tissure in Rabbits Tibia

2000 ◽  
Vol 2000.2 (0) ◽  
pp. 229-230
Author(s):  
Shigeru TADANO ◽  
Taro OKOSHI ◽  
Junichi SHIBANO ◽  
Takayoshi UKAI
Keyword(s):  
Residual Stress ◽  
Bone Structure

scholarly journals A Thermoelastic Stress Analysis General Model: Study of the Influence of Biaxial Residual Stress on Aluminium and Titanium

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 671 ◽  
Author(s):  
Francesca Di Carolo ◽  
Rosa De Finis ◽  
Davide Palumbo ◽  
Umberto Galietti
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Stress Analysis ◽  
Thermoelastic Stress ◽  
Order Theory ◽  
Thermoelastic Stress Analysis ◽  
Thermoelastic Effect ◽  
Isotropic Materials ◽  
Model Study ◽  
Thermoelastic Equation

All the studies on the thermoelastic behaviour of materials, including the revised higher order theory on the thermoelastic effect, are based on several assumptions that limit the application of such theory to the cases of isotropic materials in the presence of uniaxial residual stresses and undergoing uniaxial applied loads. These assumptions lead to some discrepancies in the description of the real thermoelastic behaviour of materials in the presence of residual stresses. In this work, by rewriting the thermoelastic equation in a different way, it was possible to study the behaviour of homogeneous and non-isotropic materials undergoing any loading conditions and residual stresses. Firstly, the error made by the calibration procedures of thermoelastic stress analysis (TSA) data in the presence of residual stresses has been investigated. Then, a statistical analysis was carried out to determine the minimum value of residual stress which would lead to significant and measurable variations in the thermoelastic signal. The simulations involved two non-ferrous metals: AA6082 and Ti6Al4V, which exhibit a specific thermoelastic behaviour.

scholarly journals Mechanical Remodeling of Bone Structure Considering Residual Stress

1996 ◽  
Vol 39 (3) ◽  
pp. 297-305
Author(s):  
Masao TANAKA ◽  
Taiji ADACHI ◽  
Yoshihiro TOMITA
Keyword(s):  
Residual Stress ◽  
Bone Structure ◽  
Mechanical Remodeling

Relaxation of indentation residual stress in alumina: Experimental observation by X-ray diffraction

1998 ◽  
Vol 18 (12) ◽  
pp. 1663-1668 ◽  
Author(s):  
Matteo Leoni ◽  
Paolo Scardi ◽  
Vincenzo M. Sglavo
Keyword(s):  
Residual Stress ◽  
Experimental Observation ◽  
X Ray Diffraction ◽  
X Ray

TEM investigations of surface residual stress relaxation in A12O3 and Al2O3-SiC nanocomposite

1994 ◽  
Vol 52 ◽  
pp. 628-629
Author(s):  
J. Fang ◽  
H. M. Chan ◽  
M. P. Harmer
Keyword(s):  
Residual Stress ◽  
Single Phase ◽  
Stress Relief ◽  
Stress Recovery ◽  
Surface Residual Stress ◽  
Microscopic Mechanism ◽  
Sic Particles ◽  
Annealing Procedure ◽  
The Difference ◽  
Nano Size

It was Niihara et al. who first discovered that the fracture strength of Al2O3 can be increased by incorporating as little as 5 vol.% of nano-size SiC particles (>1000 MPa), and that the strength would be improved further by a simple annealing procedure (>1500 MPa). This discovery has stimulated intense interest on Al2O3/SiC nanocomposites. Recent indentation studies by Fang et al. have shown that residual stress relief was more difficult in the nanocomposite than in pure Al2O3. In the present work, TEM was employed to investigate the microscopic mechanism(s) for the difference in the residual stress recovery in these two materials.Bulk samples of hot-pressed single phase Al2O3, and Al2O3 containing 5 vol.% 0.15 μm SiC particles were simultaneously polished with 15 μm diamond compound. Each sample was cut into two pieces, one of which was subsequently annealed at 1300° for 2 hours in flowing argon. Disks of 3 mm in diameter were cut from bulk samples.

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