Article
Acoustics
Farhank Saber Braim, Nik Noor Ashikin Nik Ab Razak, Azlan Abdul Aziz, Mohammed Ali Dheyab, Layla Qasim Ismael
Summary: This study utilized ultrasound to rapidly modify iron oxide nanoparticles (Fe3O4 NPs) by incorporating bismuth nanoparticles (Bi NPs) on their surface, resulting in Fe3O4@Bi composite NPs. The optimized preparation parameters were determined using response surface methodology, and the stability and biocompatibility of Fe3O4@Bi NPs were improved. The sonochemical approach efficiently produced an extremely stable, homogeneous, and biocompatible Fe3O4@Bi NPs with multifunctional potential.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Materials Science, Composites
Taner Coskun, Omer Sinan Sahin
Summary: In this study, a novel composite hydraulic cylinder was designed and its feasibility was verified through numerical analysis. The composite hydraulic cylinder, made of composite materials, is significantly lighter than conventional hydraulic cylinders, making it suitable for industrial applications where weight is a major concern.
POLYMER COMPOSITES
(2022)
Article
Energy & Fuels
Ajay Sharma, Bikash Mohanty
Summary: The study focused on the pyrolysis of Dalbergia sissoo wood to achieve a maximum yield of bio-oil, with optimum conditions identified as particle size 0.6 mm, reaction temperature 833 K, and nitrogen gas flow rate 125 ml/min. Physicochemical properties and composition of bio-oil were analyzed using various spectroscopic and chromatographic techniques, confirming the presence of high value-added compounds.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Multidisciplinary
Christian Emeka Okafor, Ezekiel Junior Okafor, Kingsley Okechukwu Ikebudu
Summary: This study evaluated the performance of different machine learning methods in predicting the tensile strength of microwave post-cured composite tailored for weight-sensitive applications. The results showed that the ANFIS and ANFIS-MOGA models were more accurate than the ANN model, and the optimized process settings yielded workable results. Therefore, selecting microwave post-cured composite for weight-sensitive applications is beneficial.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2022)
Article
Mechanics
Jonas Nieschlag, Philipp Eisenhardt, Sven Coutandin, Juergen Fleischer
Summary: The study focuses on numerical analysis of rotational molded composite tie rods with optimized geometry to achieve higher mechanical tensile loads.
COMPOSITE STRUCTURES
(2021)
Article
Mathematics, Applied
Ting-Uei Lee, Yi Min Xie
Summary: This study proposes a new element-based simultaneous optimization method by introducing a layer of elements to the boundaries where supports are allowed, which can be simply implemented in finite element models. By combining optimality criteria method and the bi-directional evolutionary structural optimization technique, support locations and structural topology can be determined effectively to achieve efficient and innovative structural designs.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2021)
Article
Mechanics
Luigi Solazzi, Andrea Buffoli
Summary: The study demonstrates that hydraulic cylinders made of composite materials perform similarly to those made of structural steel in terms of safety factor, with a weight reduction of about 87%.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Bing Zhang, Qihang Wang, Xuelei Liu, Lei Zu, Haiwei Yuan
Summary: A reduced order model was established to replace CFD solver in blade design, achieving high accuracy and acceptable computational efficiency through Principal Component Analysis and neural networks.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Hongfang An, Lingling Wang, Fangtao Lv, Rusong Fu, Yuexian Lu, Dewen Kong
Summary: Epoxy resin, calcium carbonate whisker, and polyester fiber were mixed into desulfurized gypsum-based composite cementitious material to prepare polymer fiber-reinforced desulfurization gypsum-based composite cementitious material (PFRDGCM). The study discussed the reliability of polynomial regression models, investigated the effects of factor interaction on the properties and microscopic morphology of specimens, and determined the optimum mixture ratio of PFRDGCM using numerical function and experimental results. The results showed that the quadratic polynomial models accurately predicted the properties of PFRDGCM and reflected the effects of single factor and multi-factor interaction on its compressive strength, water resistance, and durability.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Gang Zhao, Kun Li
Summary: A multi-objective robust design method is proposed in this paper to improve the product safety and robustness of vehicle parts. By establishing a response surface model and applying an uncertain analysis method and optimization algorithm, robust optimization design is achieved.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Ahmad A. Alluhaybi, Ahmed M. Hameed, Mohammed T. Alotaibi, Ahmed Alharbi, Ahmed Shahat
Summary: Adsorption using carbon nanospheres (CNS) was found to be highly efficient in removing ibuprofen (IBP) from aqueous solutions. The synthesized CNS was characterized using various analysis techniques, and the effects of pH, temperature, adsorption time, initial IBP concentration, and amount of adsorbent were evaluated. Results showed a high adsorption efficiency (356.899 mg/g) and confirmed the chemical adsorption mechanism between IBP and CNS. The reaction was determined to be both endothermic and exothermic based on Langmuir model fitting and pseudo-second-order kinetic models. Finally, all possible interaction mechanisms were identified.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Analytical
Taofeek Ayotunde Yusuf, Seonghun Pyo, Yongrae Roh
Summary: This study introduces a novel approach to designing a conformal volumetric array for underwater acoustic imaging for mine detection. The design targets specific requirements for beamwidths and transmitting voltage response. The theoretical design was validated through finite element method modeling and analysis, showing excellent compliance between analysis and computation results.
Article
Multidisciplinary Sciences
Pingjun Wang, Gangyan Li, Sirui Liu, Xiaoxu Wei
Summary: This paper proposes a design and optimization method of gear structure based on Design of Experiments (DOE) and proxy models. The new design method can effectively reduce the structure improvement cycle and improve the vibration characteristics of gears.
Article
Polymer Science
Sondre Ostli Rokvam, Nils Petter Vedvik, Luca Savio, Andreas Echtermeyer
Summary: Four plausible design concepts are applied to investigate composite bend-twist propeller-blade designs with high twisting per bending deflection. The concepts are first explained on a simplified blade structure to determine generalized principles. They are then applied to another propeller-blade geometry to obtain a bend-twist design with a specific pitch change under operational loading conditions. The final composite propeller design shows significantly higher bend-twist efficiency and desirable pitch change during load variations, suggesting it can mitigate undesirable blade effects during operation.
Article
Multidisciplinary Sciences
WesamEldin I. A. Saber, Noura El-Ahmady El-Naggar, Mohammed S. El-Hersh, Ayman Y. El-khateeb, Ashraf Elsayed, Noha M. Eldadamony, Abeer Abdulkhalek Ghoniem
Summary: The study focused on optimizing the biosorption process using immobilized cells to remove Cr6+ ions, comparing the effectiveness of RCCD and ANN models. Experimental results confirmed the significant parameters influencing biosorption and highlighted the role of immobilized bacteria in removing Cr6+ ions, as shown through SEM and EDX analysis.
SCIENTIFIC REPORTS
(2021)