Print Email Facebook Twitter Calcium phosphate cement reinforced with poly (vinyl alcohol) fibers Title Calcium phosphate cement reinforced with poly (vinyl alcohol) fibers: An experimental and numerical failure analysis Author Paknahad, A. (TU Delft Applied Mechanics; Radboud University Medical Center) Goudarzi, M. (TU Delft Applied Mechanics) Kucko, Nathan W. (Radboud University Medical Center) Leeuwenburgh, Sander C.G. (Radboud University Medical Center) Sluys, Lambertus J. (TU Delft Materials- Mechanics- Management & Design) Department Materials- Mechanics- Management & Design Date 2021 Abstract Calcium phosphate cements (CPCs) have been widely used during the past decades as biocompatible bone substitution in maxillofacial, oral and orthopedic surgery. CPCs are injectable and are chemically resemblant to the mineral phase of native bone. Nevertheless, their low fracture toughness and high brittleness reduce their clinical applicability to weakly loaded bones. Reinforcement of CPC matrix with polymeric fibers can overcome these mechanical drawbacks and significantly enhance their toughness and strength. Such fiber-reinforced calcium phosphate cements (FRCPCs) have the potential to act as advanced bone substitute in load-bearing anatomical sites. This work achieves integrated experimental and numerical characterization of the mechanical properties of FRCPCs under bending and tensile loading. To this end, a 3-D numerical gradient enhanced damage model combined with a dimensionally-reduced fiber model are employed to develop a computational model for material characterization and to simulate the failure process of fiber-reinforced CPC matrix based on experimental data. In addition, an advanced interfacial constitutive law, derived from micromechanical pull-out tests, is used to represent the interaction between the polymeric fiber and CPC matrix. The presented computational model is successfully validated with the experimental results and offers a firm basis for further investigations on the development of numerical and experimental analysis of fiber-reinforced bone cements. Subject Fiber-reinforced calcium phosphate cementsNumerical modelingTensile testThree-point bending test To reference this document use: http://resolver.tudelft.nl/uuid:851ca8af-25d9-483e-837e-4a7f002c8967 DOI https://doi.org/10.1016/j.actbio.2020.10.014 ISSN 1742-7061 Source Acta Biomaterialia, 119, 458-471 Part of collection Institutional Repository Document type journal article Rights © 2021 A. Paknahad, M. Goudarzi, Nathan W. Kucko, Sander C.G. Leeuwenburgh, Lambertus J. Sluys Files PDF 1_s2.0_S1742706120306036_main.pdf 3.59 MB Close viewer /islandora/object/uuid:851ca8af-25d9-483e-837e-4a7f002c8967/datastream/OBJ/view