Abstract
Tissue-biomaterial interfacial bonding plays a significant role in the success of biomaterials used for load-bearing orthopedic and dental prostheses. The objective of this study was to develop a physically sound and practically effective technique for assessment of the strength of bone-biomaterial interfaces under mixed mode loading. A single-edge notched sandwich specimen was developed for this purpose, wherein a bilayer specimen comprising the interface between tissue and biomaterial was sandwiched between two holders and loaded under mixed modes. First, a closed form solution was derived for the sandwich specimen under the assumption of linear elasticity, based on a general solution for sandwich structures reported in the literature. Then, a correction factor was determined for the solution using finite element models to compensate for errors induced by finite interlayer thickness. Moreover, using the same FEA models, it was found that crack closure may occur when the shear component is dominant at the crack. However, its effects were estimated to be limited and negligible. Furthermore, as an example, the strength of a bone/dental cement interface under different loading modes was tested using this sandwich technique. It is expected that the mixed mode technique can provide an effective means for investigators to study the mechanical integrity of bone-biomaterial interfaces under complex loading conditions. (C) 2000 John Wiley and Sons, Inc.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 664-672 |
| Number of pages | 9 |
| Journal | Journal of Biomedical Materials Research |
| Volume | 53 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2000 |
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Keywords
- Bone
- Finite element analysis
- Fracture toughness
- Implant
- Interface
ASJC Scopus subject areas
- Biomedical Engineering
- Biomaterials
Cite this
A mixed mode fracture toughness test of bone-biomaterial interfaces. / Wang, Xiaodu; Mauli Agrawal, C.
In: Journal of Biomedical Materials Research, Vol. 53, No. 6, 2000, p. 664-672.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A mixed mode fracture toughness test of bone-biomaterial interfaces
AU - Wang, Xiaodu
AU - Mauli Agrawal, C.
PY - 2000
Y1 - 2000
N2 - Tissue-biomaterial interfacial bonding plays a significant role in the success of biomaterials used for load-bearing orthopedic and dental prostheses. The objective of this study was to develop a physically sound and practically effective technique for assessment of the strength of bone-biomaterial interfaces under mixed mode loading. A single-edge notched sandwich specimen was developed for this purpose, wherein a bilayer specimen comprising the interface between tissue and biomaterial was sandwiched between two holders and loaded under mixed modes. First, a closed form solution was derived for the sandwich specimen under the assumption of linear elasticity, based on a general solution for sandwich structures reported in the literature. Then, a correction factor was determined for the solution using finite element models to compensate for errors induced by finite interlayer thickness. Moreover, using the same FEA models, it was found that crack closure may occur when the shear component is dominant at the crack. However, its effects were estimated to be limited and negligible. Furthermore, as an example, the strength of a bone/dental cement interface under different loading modes was tested using this sandwich technique. It is expected that the mixed mode technique can provide an effective means for investigators to study the mechanical integrity of bone-biomaterial interfaces under complex loading conditions. (C) 2000 John Wiley and Sons, Inc.
AB - Tissue-biomaterial interfacial bonding plays a significant role in the success of biomaterials used for load-bearing orthopedic and dental prostheses. The objective of this study was to develop a physically sound and practically effective technique for assessment of the strength of bone-biomaterial interfaces under mixed mode loading. A single-edge notched sandwich specimen was developed for this purpose, wherein a bilayer specimen comprising the interface between tissue and biomaterial was sandwiched between two holders and loaded under mixed modes. First, a closed form solution was derived for the sandwich specimen under the assumption of linear elasticity, based on a general solution for sandwich structures reported in the literature. Then, a correction factor was determined for the solution using finite element models to compensate for errors induced by finite interlayer thickness. Moreover, using the same FEA models, it was found that crack closure may occur when the shear component is dominant at the crack. However, its effects were estimated to be limited and negligible. Furthermore, as an example, the strength of a bone/dental cement interface under different loading modes was tested using this sandwich technique. It is expected that the mixed mode technique can provide an effective means for investigators to study the mechanical integrity of bone-biomaterial interfaces under complex loading conditions. (C) 2000 John Wiley and Sons, Inc.
KW - Bone
KW - Finite element analysis
KW - Fracture toughness
KW - Implant
KW - Interface
UR - http://www.scopus.com/inward/record.url?scp=0033659341&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033659341&partnerID=8YFLogxK
U2 - 10.1002/1097-4636(2000)53:6<664::AID-JBM8>3.0.CO;2-W
DO - 10.1002/1097-4636(2000)53:6<664::AID-JBM8>3.0.CO;2-W
M3 - Article
C2 - 11074425
AN - SCOPUS:0033659341
VL - 53
SP - 664
EP - 672
JO - Journal of Biomedical Materials Research - Part A
JF - Journal of Biomedical Materials Research - Part A
SN - 0021-9304
IS - 6
ER -