http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Majid Rezvani,Jamalodin Asadi,Arman Sourani,Mina Foroughi,Donya Sheibani Tehrani 대한신경손상학회 2023 Korean Journal of Neurotrauma Vol.19 No.1
To investigate the efficacy and safety of two different techniques for spinal ligamentotaxis. Spine ligamentotaxis reduces the number of retropulsed bone fragments in the fractured vertebrae. Two different ligamentotaxis techniques require clinical evaluation.
Arman Sourani,Majid Rezvani,Jamalodin Asadi,Mina Foroughi,Donya Sheibani Tehrani 대한신경손상학회 2023 Korean Journal of Neurotrauma Vol.19 No.4
Dr. Lee questioned multiple topics that needs to be addressed for better clearance. As provided the commentary they asked about the pedicle status of our cases. To equal the severity indices in both groups, before group allocation, we did not include obvious and dislocated bilateral pedicular fractures to prevent selection biases. However, it is worth mentioning pedicular fracture has no prognostic role in Thoracolumbar Injury Classification and Severity Score (TLICS)/Arbeitsgemeinschaft für Osteosynthesefragen (AO) classifications.
Linkage Learning Optimization of Aeroelastic and Structural Behavior of Composite Wings
Roham Rafiee,Touraj Farsadi,Majid Ahmadi Tehrani,Parsa Sharifi 한국항공우주학회 2023 International Journal of Aeronautical and Space Sc Vol.24 No.5
The paper aims to develop a systematic numerical design for composite wings optimization subject to aerodynamic loading and to assess the aeroelastic and structural performance of the optimized composite wing. Aeroelastic tailoring is a powerful method for utilizing the anisotropic features of composite materials used in lightweight aerospace structures. The present proposed methodology combines three different analysis tools: a commercial FE software commonly used in industry, an in-house reduced order aeroelastic framework for aeroelastic analyses with tailoring capabilities, LLGA, in-house linkage-learning genetic algorithms for optimization of stacking sequences. As a multidisciplinary problem where structural and aeroelastic behaviors are interacted, developed multi-level optimization scenario in this research converges to the optimal design in a very short time. The proposed methodology implemented as a computer code can effectively be applied to any arbitrary air vehicle’s composite wing by changing input data.
Ehsan Fadayee Fard,Hassan Sharifi,Majid Tehrani,Ehsan Akbari Techno-Press 2023 Advances in materials research Vol.12 No.1
Basalt and poly-ester fibers along with epoxy resin were used to produce inter-ply, intra-ply and functionally gradient hybrid composites. In all of the composites, the relative content of basalt fiber to poly-ester fiber was equal to 50 percent. The flexural and charpy impact properties of the hybrid composites are presented with particular regard to the effects of the hybrid types, stacking sequence of the plies, loading direction and loading speed. The results show that with properly choosing the composition and the stacking sequence of the plies; the inter-ply hybrid composites can achieve better flexural strength and impact absorption energy compared to the intra-ply and functionally gradient composites. The flexural strength and impact absorption energy of the functionally gradient hybrid composites is comparable to, or higher than the intra-ply sample. Also, by increasing the loading speed, the flexural strength increases while the flexural modulus does not have any special trend.