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| 1 | A new design of 3D-printed orthopedic bone plates with auxeticstructures to mitigate stress shielding and improve intra-operative bending显示文摘Orthopedic bone plates are most commonly used for bone fracture fixation for more than 100 years.The bone plate design had evolved over time overcoming many challenges such as insufficient strength and excessive plate–bone contact affecting the blood circulation.However,it is only made of two materials,either stainless steel(AISI 316L)or titanium(Ti–6Al–4V).There are two main limitations of metallic bone implants,namely stress shielding and the problem of malocclusion caused by the displacement of the fracture site during healing.To overcome the two problems,a new bone plate design with the incorporation of auxetic structures is proposed in this work.This study aims to use auxetic structure section in the bone plate that would decrease the stiffness of the region,thereby mitigating the stress-shielding effect and at the same time act as a deformable section to enable intra-operative bending for effective alignment while having enough bending strength and stiffness.Two different auxetic structures namely re-entrant honeycomb and missing rib structures were considered.The auxetic structure incorporated bone plates were designed,finite element analysis was done,fabricated using direct metal laser sintering technique,and tested.The results indicate that the re-entrant honeycomb structure incorporated bone plates serve as an effective bone design compared to the conventional bone plate design,in terms of stress shielding and intra-operative bending while offering similar mechanical and bending strength. | Sanjairaj Vijayavenkataraman Akhil Gopinath Wen F.Lu | 2020 | Bio-Design and Manufacturing2020，3，2： | 4 |
| 2 | GALVANIC CORROSION AND PROTECTION OF GECM/LY12CZ COUPLES UNDER DIFFERENT ATMOSPHERIC EXPOSURE CONDITIONS显示文摘Galvanic compatibility between graphite epoxy composite materials (GECM) andLY12CZ aluminum alloy was evaluated in different atmospheric corrosion environ-ments and by laboratory electrochemical measurements. Open circuit potential elec-trochemical measurements showed a relatively large potential difference about 1 voltbetween the GECM and LY12CZ aluminum alloy, and this difference provided thedriving force for galvanic corrosion of the LY12CZ aluminum alloy as an anode.Having been exposed for 1, 3 or 5 years in Beijing, Tuandao and Wanning station,GECM/L Y12CZ couples showed significant losses of strength and elongation. Protec-tive coatings and non-conductive barriers breaking the galvanic corrosion circuit wereevaluated under the same atmospheric corrosive conditions. Epoxy primer paint, glasscloth barriers and LY12CZ anodizing were effective in galvanic corrosion control forGECM/L Y12CZ couples. | F.Lu Q.P.Zhong 等 | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，1： | 3 |
| 3 | GALVANIC CORROSION BETWEEN GRAPHITE EPOXY COMPOSITE MATERIALS AND LY12CZ ALUMINUM ALLOY显示文摘GALVANICCORROSIONBETWEENGRAPHITEEPOXYCOMPOSITEMATERIALSANDLY12CZALUMINUMALLOYF.Lu;W.Y.Shen;J.G.LiandW.D.Zhen(BeijingInstitute... | F.Lu W.Y.Shen J.G. Li and W.D. Zhen(Beijing Institute of Aeronautical Materials,Beijing 100095,) | 1996 | Acta Metallurgica Sinica(English Letters)1996，9，6： | 2 |
| 4 | Emerging trends and prospects of electroconductive bioinks for cell-laden and functional 3D bioprinting显示文摘Introduction 3D bioprinting offers a unique biofabrication platform that allows the generation of functional tissue constructs in a spatially/geometrically controlled and automated manner using a 3 D printer and bioink.Bioink serves as the carrier medium that provides the ideal physico-mechanical characteristics for printability,shape fidelity,and support;and a biological microenvironment for the living cells prior to,during. | Harish K.Handral Vaishali P.Natu Tong Cao Jerry Y.H.Fuh Gopu Sriram Wen F.Lu | 2022 | Bio-Design and Manufacturing2022，5，2： | 1 |
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