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Controllable Macroscopic Architecture of Subtractive Manufactured Porous Iron for Cancellous Bone Analogue:Computational to Experimental Validation

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Journal of Bionic Engineering 2020年第2期17卷 357-369页

作者： Muhammad Azfar Noordin Rabiatul Adibah Abdul Rahim Ahmad Nabeel Hakimi Roslan Iza Azura Ali ardiyansyah syahrom Amir Putra Md Saad Applied Mechanics and Design School of Mechanical EngineeringFaculty of EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruMalaysia Medical Devices and Technology Centre(MEDiTEC) Institute of Human Centred and Engineering(iHumEn)Universiti Teknologi Malaysia81310 UTM Johor BahruMalaysia School of Biomedical&Health Science Faculty of EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruMalaysia

Higher strength and lower degradation rate of Fe compared to magnesium and zinc have made it the most reliable for orthopaedic ***,this paper studies the morphological and mechanical characteristics of porous Fe fabricated using subtractive manufacturing for load bearing bone *** types of porous Fe(19%,39%and 59%)were prepared and then modelled into a 3D model for finite element *** mechanical properties evaluated through finite element analysis were then validated by the experimental *** fluid dynamics was done in this study to evaluate the permeability and wall shear stress of the porous *** between morphological indices,mechanical properties,shear stress and permeability were then *** mechanical behaviour of porous Fe investigated through finite element analysis was in good agreement with the experimental *** mechanical properties of porous Fe specimen particularly sample C(modulus:5.63 GPa and yield strength:145.7 MPa)was tailored to the cancellous bone(modulus:0.5 GPa-18 GPa and yield strength:101 MPa-169.6 MPa).As the porosity increased,the performance of porous Fe regarding mechanical properties and morphological properties were enhanced.

关键词： mechanical characterization morphology finite element analysis porous iron shear stress permeability

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Comparison Fatigue Life Time Prediction of Femoral Ball and Condyle Bovine Trabecular Bone

Comparison Fatigue Life Time Prediction of Femoral Ball and ...

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2012 2nd International Conference on Biomedical Engineering and Technology（ICBET 2012）

作者： Fatihhi, S.J. ardiyansyah syahrom Harun, M.N. Abdul Kadir, M.R. Department of Solid Mechanics and Design Faculty of Mechanical Engineering Universiti Teknologi Malaysia Skudai 81310 Malaysia Department of Biomechanics and Biomaterial Faculty Biomedical Engineering and Health SciencesUniversiti Teknologi Malaysia 81310 Malaysia

Fatigue of trabecular bone under physiological loading can give new insight on fatigue life and behavior under certain human habitual activities. The aim of study is to characterize the fatigue strain on trabecular and compare the strain in fatigue condition of different two anatomic parts. Loading condition were applied depends on normal human walking forces acting on hip. Hip contact loads were used for simulated the human gait while walking were chosen from the maximum load on hip and 75 % of that loading transferred to the trabecular for stress range 16 % - 55 % from that loads. The result showed different anatomic parts on trabecular adapt different physiological apparent loading due to orientation in human anatomic axis and give different hysteresis loop with the largest variation in strain. The huge different in strain gap after 10 4 cycles in both anatomic part is show that the femoral ball is more capable than condyle to sustain the prolonged loading.

关键词： cancellous bone trabecular bone fatigue.

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