Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Ahmad R. Najafi"'
Publikováno v:
Designs, Vol 4, Iss 4, p 41 (2020)
The reliability and performance qualification of additively manufactured metal parts is critical for their successful and safe use in engineering applications. In current powder-bed fusion type metal additive manufacturing processes, local thermal ac
Externí odkaz:
https://doaj.org/article/c21936f0b6ca444bbf7316668e8cb391
Autor:
Amirreza Sadighi, Ebrahim Maghami, Mohammad Houshmand Khaneghahi, Divya Kamireddi, Seyed Ali Rahmaninezhad, Yaghoob (Amir) Farnam, Christopher M. Sales, Caroline Schauer, Ahmad R. Najafi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b06bc2091c5b1d6747caedbb7cc6701f
https://doi.org/10.2139/ssrn.4398205
https://doi.org/10.2139/ssrn.4398205
Autor:
Nolan Black, Ahmad R. Najafi
Publikováno v:
Structural and Multidisciplinary Optimization. 66
Publikováno v:
Computer Methods in Biomechanics and Biomedical Engineering. 25:342-357
Developing advanced fracture tools can increase the understanding of crack growth trajectories in human cortical bone. The present study investigates fracture micromechanics of human cortical bone under compressive and tensile loadings utilizing a ph
Autor:
Amirreza Sadighi, Moein Taghvaei, Mehrangiz Taheri, Delaney Oeth, Sorin Siegler, Thomas P. Schaer, Ahmad R. Najafi
Publikováno v:
Journal of the Mechanical Behavior of Biomedical Materials. 143:105871
Autor:
Ebrahim Maghami, Ahmad R. Najafi
Publikováno v:
Dental materials : official publication of the Academy of Dental Materials. 38(11)
Dentin microstructure undergoes changes with age and its materials properties degrade over time. In the present study, we investigate the coupled influence of increased filled tubules and decreased materials properties on the fracture behavior of hum
Publikováno v:
International Journal for Numerical Methods in Engineering. 122:2981-3014
Publikováno v:
International Journal for Numerical Methods in Engineering. 121:2806-2825
Autor:
Kurt Schab, K. B. Nakshatrala, Urmi Devi, Zachary J. Phillips, Reza Pejman, Ahmad R. Najafi, Jason F. Patrick
Publikováno v:
American Society for Composites 2021.
Fiber-reinforced polymer (FRP) composites, consisting of stiff/strong fibers embedded within a continuous matrix, are a lightweight structural platform supporting an array of modern applications. Bioinspired vascularization of fiber-composites can au
Publikováno v:
Pejman, R, Sigmund, O & Najafi, A R 2021, ' Topology optimization of microvascular composites for active-cooling applications using a geometrical reduced-order model ', Structural and Multidisciplinary Optimization, vol. 64, pp. 563–583 . https://doi.org/10.1007/s00158-021-02951-x
In this study, we develop a design methodology with a basis in gradient-based topology optimization and a geometrical reduced-order thermal/hydraulic model for actively cooled microvascular composite panels. The proposed method is computationally ver