Results 71 to 80 of about 1,652 (302)

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Effects of randomly distributed member initial geometric imperfection on load bearing capacity of flat double-layer grid space structures

, 2020
Bu çalışmanın amacı, düzlemsel çift katlı uzay kafes sistemlerde (DÇKUKS), yaygın geometrik kusurlardan biri olan başlangıç eğrilik kusurunun taşıyıcı sistemin yük taşıma kapasitesine etkisini incelemektir. Eğrilik kusurunu incelemek için, ideal (eğrilik
Noori, Mojibullah
core  

Numerically Predicted Buckling Design Criteria for Elliptical Common Bulkhead Structures

International Journal of Aerospace Engineering
A common bulkhead (CB) structure that separates the oxidizer and fuel regions without an interstage single tank reduces the weight of the propellant tanks of launch systems.
Gi-Seop Kim, Chang-Hoon Sim, Chang-Min Lee, Jae-Sang Park   +3 more
doaj   +1 more source

Static Analysis of Steel Plates and Sections Retrofitted with FRP Plates by Finite Elements Modelling [PDF]

Journal of Structural and Construction Engineering, 2019
Nowadays the use of FRP composites for strengthening steel structures has been considered by researchers. In present study, The maximum deformation of steel plates and structural sections before and after strengthening by GFRP plates was evaluated by ...
Hossein Amoushahi, Mohammad Ghasemitabar
doaj   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Safety factor determining for space trusses by non-linear analysis and artificial neural network method

Science and Engineering of Composite Materials, 2013
Determining a feasible safety factor for space trusses is an important phase in structural analysis that could have economic benefits. We know there are many kinds of imperfections in structural elements, which include both material and geometric flaws ...
Yadollahi Mehrzad Mohabbi, Karagöl Fatma, Kaygusuz Mehmet Akif, Polat Rıza, Demirboga Ramazan   +4 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Automated linear buckling analysis of space frame structures

Results in Engineering
This article presents a streamlined procedure for assessing the capacity of space frame structures by incorporating geometric (stress) stiffness directly into the structural analysis.
Munib Sarwar, Bjørn Melhus
doaj   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

Comparison of new Design Guidelines for Composite Cylindrical Shells prone to Buckling

, 2013
Currently, imperfection sensitive shell structures prone to buckling are designed according to the NASA SP-8007 guideline, from 1968, using its conservative lower-bound curve.
Zimmermann, R., Castro, Saullo, Degenhardt, Richard, Arbelo, Mariano   +3 more
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