Article
Nanoscience & Nanotechnology
Boyou Hou, Kunpeng Song, Zeeshan Ur Rehman, Tinglu Song, Tao Lin, Wenchao Zhang, Ye-Tang Pan, Rongjie Yang
Summary: Nanomaterials derived from metal-organic frameworks (MOFs) show great potential as flame retardants for polymeric materials. In this study, a novel nanostructure (ZIF-67@layered double hydroxides@polyphophazenes, ZIF@LDH@PZS) was designed and introduced into epoxy resin (EP) as a flame retardant. The interface of the polymer nanocomposites can be accurately tailored by the outermost layer of the nanofillers. The results showed that the EP blended with ZIF@LDH@PZS exhibited outstanding comprehensive performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Boyou Hou, Wenyuan Zhang, Hongyu Lu, Kunpeng Song, Zhishuai Geng, Xinming Ye, Ye-Tang Pan, Wenchao Zhang, Rongjie Yang
Summary: The hybridization of ZIF-67 with octacarboxyl POSS forms novel metal POSS-organic frameworks, improving the flame retardancy and mechanical properties of epoxy resin.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Fouad Laoutid, Maryam Jouyandeh, Oltea Murariu, Henri Vahabi, Mohammad Reza Saeb, Loic Brison, Marius Murariu, Philippe Dubois
Summary: This study investigated the flame-retardant effect of transparent epoxy coating with aluminum hypophosphite nanoparticles on polylactic acid sheets. The addition of these nanoparticles into the epoxy resin accelerated the degradation of the coating, resulting in increased char residue. The presence of the nanoparticles reduced the peak heat release rate significantly, leading to the formation of a homogeneous char layer with a 15 wt.% nanoparticle content. However, further increase in content did not enhance the flame-retardant properties due to the formation of structural cracks in the coating.
Article
Materials Science, Multidisciplinary
Rui Lin, Bo Liu, Junjie Zhang, Shengen Zhang
Summary: In this work, scrap aircraft aluminum alloys were recycled into 7075 aluminum alloy to maximize its recovery value. The mechanical properties of the recycled profiles were superior to requirements, and their corrosion resistance met aviation aluminum alloy standards. The recycling process provides guidance for the industrial application of scrap aircraft aluminum alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Youcef Amine Medjaouri, Achour Ales, Oussama Mehelli, Redouane Tahmi, Karim Benzaoui, Abdelmalek Habes, Mehdi Derradji
Summary: This study focuses on the development of microwave nanocomposites with enhanced electromagnetic properties and shielding effectiveness through the surface treatment of aluminum oxide nanoparticles. The results demonstrate that the treated samples exhibit improved absorption and electrical characteristics.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Engineering, Multidisciplinary
Ke-xin Wang, Li-xiao Shen, Bin Yuan, Yan Li, Shun-guan Zhu, Lin Zhang, Zhen-xin Yi, Chen-guang Zhu
Summary: In this study, a spray crystallization method was used to prepare novel energetic nanocomposites by compositing a high-energy metal-organic complex [Ni(CHZ)3](ClO4)2 with nano-aluminum (n-Al). The results showed that the n-Al/[Ni(CHZ)3](ClO4)2 nanocomposites prepared by the spray crystallization method had higher heat release, peak pressure, and pressurization rate, as well as lower sensitivity thresholds to electrostatic discharge (ESD), compared to [Ni(CHZ)3](ClO4)2 alone and physically mixed (PM) n-Al/[Ni(CHZ)3](ClO4)2. These findings demonstrate the significance of introducing energetic metal-organic complexes with high energy into nano-aluminum/energetic metal-organic complexes nanocomposites through the spray crystallization method for improved performance and application.
DEFENCE TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Wenhao Yang, Jing Liang, Shuilai Qiu, Yifan Zhou, Bin Zou, Jingwen Wang, Lei Song, Yuan Hu
Summary: This study prepares functional BP nanosheets by combining the smoke suppression mechanism and oxidation resistance mechanism, which effectively enhances the fire safety. It provides a new approach for the preparation of high-performance epoxy composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Crystallography
Ana Isabel Fernandez-Calvo, Clara Delgado, Philippe Dufour, Egoitz Aldanondo, Mario Diaz, Maria Belen Garcia-Blanco
Summary: The end-of-life (EoL) of new aircraft panels made of Al-Li alloys joined by laser beam welding (LBW) or friction stir welding (FSW) was investigated. Various cutting strategies were defined to maximize recycling of panel scrap back into high-quality aircraft Al-Li alloys. Two novel Cr-free coating systems were applied to the welded aerostructures, and their effect on panel recyclability and the need for primer and topcoat elimination were studied. The chemical compatibility of the recycled alloys with commercial Al-Li alloys was examined. The optimal EoL process for closed-loop recycling and conservation of valuable alloying elements was identified.
Article
Mechanics
A. A. Megahed, F. Abd El-Wadoud, A. Wagih, A. M. Kabeel
Summary: The study focused on using aluminum wire meshes to enhance the mechanical properties of epoxy composite materials, replacing glass fibers with aluminum meshes can adjust the strength, ductility, and toughness of laminates. The addition of aluminum mesh layers significantly improved energy absorption and fracture toughness in tensile and flexural tests.
COMPOSITE STRUCTURES
(2021)
Article
Chemistry, Physical
Mingtan Wang, Guoqing Xiao, Chunlin Chen, Chunyan Chen, Zhengwei Yang, Fei Zhong, Yuanzhi Liu, Rui Zou
Summary: This study combined ZrO2 and LDH with PDA to enhance the function of intumescent fire retardant coatings. The modified coatings showed superior fire protection performance and expansion characteristics, as demonstrated in experimental results.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Nanoscience & Nanotechnology
Hamid Ghorbani, Roohollah Jamaati
Summary: In this study, a high-strength and high-toughness Al-Zn-Mg-Cu/pure Al laminated composite with a heterogeneous microstructure was manufactured using the compression bonding process. The four-layer sample showed strong bonding between layers and exhibited significantly increased strength and toughness compared to the as-received alloy. On the other hand, the three-layer sample had weak bonding between layers and showed a large extent of delamination. Both samples displayed a heterogeneous fracture behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Applied
Yixiang Xu, Junjie Wang, Wenbin Zhang, Siqi Huo, Zhengping Fang, Pingan Song, Dong Wang, Hao Wang
Summary: This work focuses on the synthesis of a P/N-derived flame retardant (DOPO-BNM) using DOPO, 2-aminobenzimidazole, and 3-nitrobenzaldehyde. The effects of DOPO-BNM on the flame retardancy and thermal and mechanical properties of epoxy resin (EP) were comprehensively studied. The results showed that the addition of 8% DOPO-BNM significantly improved the fire safety of EP, with enhanced flame retardancy and increased char residue. DOPO-BNM also slightly affected the glass-transition temperature (Tg) of the EP thermoset, while maintaining its mechanical properties.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Engineering, Civil
Hamid Ghorbani, Roohollah Jamaati
Summary: This research successfully introduced a gradient microstructure in the AA7075 aluminum alloy through compression bonding at different temperatures. The bonding quality between pure aluminum layers was improved with increasing temperature. The texture transition from recrystallization texture to deformation texture occurred by increasing the compression temperature. The hardness and strength of the samples were reduced but the toughness was enhanced with increasing compression bonding temperature.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Materials Science, Textiles
M. Megahed, A. Fathy, D. Morsy, F. Shehata
Summary: The effects of incorporating nanometer and micrometer-sized aluminum particles in glass fiber reinforcement epoxy composites were studied, resulting in significant improvements in mechanical properties such as tensile, flexural, hardness, wear, and impact behavior. The addition of aluminum particles showed enhancements in different properties, with a reversal of improvement trend observed at higher nanometer-sized aluminum particle loading levels. Microscopy results indicated good dispersion of aluminum particles in the epoxy matrix, with some agglomeration at higher nano-aluminum weight fractions.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)
Article
Chemistry, Physical
Dongshuai Hou, Qingrui Yang, Zuquan Jin, Pan Wang, Muhan Wang, Xinpeng Wang, Yue Zhang
Summary: The bonding properties of the epoxy-concrete interface can be significantly improved by GO modification, as demonstrated in molecular dynamics simulations. Epoxy adhered to the GO sheet exhibits higher resistance to pulling forces, indicating improved bonding performance.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Composites
Kalkidan Gossaye, Kiran Shahapurkar, Venkatesh Chenrayan, Ibrahim M. Alarifi, Vineet Tirth, Manzoore Elahi M. Soudagar, Ali Algahtani, Abdulaziz H. Alghtani
Summary: Environmental pollution is a major challenge that needs to be addressed, and utilizing or recycling wastes can bring positive environmental and economic benefits. In this study, epoxy based composites were prepared using Habesha eggshells from Ethiopia, and their physical and mechanical properties were characterized. The results showed that increasing the eggshell content led to higher density of the composites, and the modulus and strength were sensitive to variations in the strain rate.
POLYMER COMPOSITES
(2023)
Article
Nanoscience & Nanotechnology
J. Prakash Arul Jose, Anurag Shrivastava, Prem Kumar Soni, N. Hemalatha, Saad Alshahrani, C. Ahamed Saleel, Abhishek Sharma, Saboor Shaik, Ibrahim M. Alarifi
Summary: In this study, the impact of nanofluids on 100W solar photovoltaic thermal collectors was analyzed through experimental and numerical analysis. The results showed that using nanofluids as the cooling fluid can improve the thermal efficiency and temperature increase of the system.
JOURNAL OF NANOMATERIALS
(2023)
Review
Materials Science, Textiles
Ibrahim M. Alarifi
Summary: Natural, glass, and carbon fiber reinforced polymer composites are replacing conventional materials due to their lower weight and superior strength properties. However, machining FRP composites is difficult due to their inhomogeneity, ease of deformation, and anisotropic nature. This review provides insights into recent developments and challenges in the field, and highlights the need for further studies to improve machining of these composites.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Chemistry, Analytical
Long Zhang, Farzana Bibi, Imtiyaz Hussain, Muhammad Sultan, Adeel Arshad, Saqib Hasnain, Ibrahim M. Alarifi, Mohammed A. Alamir, Uzair Sajjad
Summary: This study develops an optimized deep learning model based on more than 4000 data points to accurately predict the strain of AM lattice structures with different topologies. Stress and relative density were found to have the most significant impact on strain.
Article
Materials Science, Composites
Ibrahim M. Alarifi
Summary: In this study, artificial bones made of HA/PAN and PLA were developed as potential replacements for natural bone. Composite filaments were fabricated using HA/PAN and PLA and applied to produce reentrant artificial bone materials. Scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to analyze the scaffold morphology and elemental composition. Compressive tests were conducted to determine the optimal scaffolding prototype and assess the mechanical behavior of the cellular structure. The results showed that the auxetic cells influenced the bone macrostructure and PLA/HA scaffoldings exhibited excellent potential for bone deficiency restoration.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Mohamed Yassin, Kiran Shahapurkar, Venkatesh Chenrayan, Ibrahim M. Alarifi, Mohammed A. Alamir, Tarek M. A. A. El-Bagory
Summary: This study investigates the mechanical properties of moringa oleifera and bamboo fibers extracted from Ethiopia. Three types of woven composites, moringa/epoxy, bamboo/epoxy and moringa/bamboo/epoxy (hybrid), are fabricated with a fiber content of 60%. Tensile and flexural properties are analyzed, showing that all composites exhibit brittle failure. The woven composites have increased fracture strain and higher tensile modulus and strength compared to neat epoxy. Additionally, bamboo/epoxy and moringa/bamboo/epoxy composites demonstrate non-linear stress-strain profiles and superior flexural properties due to good bonding and compatibility. The flexural modulus and strength of the woven composites are higher than neat epoxy, with an increase of 31%-96% and 5.79%-51.12%, respectively. Scanning electron microscope analysis of fractured surfaces reveals the structure-property correlations.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Keyredin Selman, Kiran Shahapurkar, Venkatesh Chenrayan, Mohammed A. Alamir, Ibrahim M. Alarifi, Vineet Tirth, Abdulaziz H. Alghtani, Ali Algahtani, Tawfiq Al-Mughanam
Summary: This study investigates a novel composite consisting of Kulkual fibers and Titanium diboride (TiB2) filler reinforced epoxy composites. Kulkual, also known as Opuntia ficus-indica, is a plant plentifully found in Ethiopia and is utilized in the form of fibers along with TiB2 as reinforcement for synthesizing epoxy matrix composites. Six types of composites with varying content of Kulkual fibers and fixed TiB2 content are fabricated and their mechanical properties are evaluated. The results show that the addition of Kulkual fibers improves the tensile and flexural properties of the composites, with the EK-10 composite exhibiting the greatest improvement. Fractured surfaces are also analyzed to identify the structure-property relationships.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Vijayakumar Nimbagal, N. R. Banapurmath, M. A. Umarfarooq, Suraj Revankar, Ashok M. Sajjan, Manzoore Elahi M. Soudagar, Kiran Shahapurkar, Mohammed A. Alamir, Ibrahim M. Alarifi, Ashraf Elfasakhany
Summary: This study investigated the effects of carbon nanofibers (CNFs) and a combination of CNFs and micro-sized short carbon fibers (SCFs) on the mechanical, thermal, and fracture properties of epoxy-PLA composite. The incorporation of both CNFs and SCFs into the composite resulted in improved tensile, flexural, impact strength, and fracture toughness. The combined fillers showed a synergetic effect on enhancing the mechanical properties of the composite.
POLYMER COMPOSITES
(2023)
Review
Materials Science, Characterization & Testing
Alaa M. Almushaikeh, Saleh O. Alaswad, Mohammed S. Alsuhybani, Bandar M. AlOtaibi, Ibrahim M. Alarifi, Naif B. Alqahtani, Salem M. Aldosari, Sami S. Alsaleh, Ahmed S. Haidyrah, Alanood A. Alolyan, Basheer A. Alshammari
Summary: Polymer matrix composites are superior materials with excellent mechanical, thermal, and electrical properties compared to traditional metals. Carbon fiber reinforced thermoplastic (CFRTP) is gaining popularity in industries due to its recyclability, simplicity of processing, good characteristics, flexibility, and shorter production time. This study reviews the manufacturing techniques and applications of CFRTP, as well as the recovery and recycling methods of carbon fiber materials in polymer composites.
Article
Materials Science, Characterization & Testing
Ibrahim M. Alarifi
Summary: This research proposes a new method to simulate the failure of a 3D-printed engineering design. Fused deposition modeling (FDM) of PETG/CF material was used to develop and build the structure's topology, and the mechanical characteristics of the material were quantitatively linked to experimental results. The study demonstrates the use of FEA in 3D printing to evaluate the performance of a helmet chinstrap design under different production conditions, potentially reducing product design and development time.
Article
Materials Science, Multidisciplinary
Ibrahim M. Alarifi
Summary: Carbon fibers (CFs) were used as reinforcement to develop a PETG-based polymer composite using FDM 3D printing. The study investigated the influence of CF and process factors on the mechanical properties of the composite. Enhanced flexural and tensile strength were observed in PETG-reinforced polymer at specific layer thickness and infill percentage, while compressive strength improved in reinforced PETG hexagonal and circle structures. The research aimed to validate numerical modeling and compare experimental and computational data.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Muhammad Hamid, Zafar Hayat Khan, Waqar Ahmad Khan, Zhenfu Tian
Summary: This study numerically investigates the natural convection inside curvilinear geometries with electrically conductive fluids and multidirectional magnetic fields. The results show that the presence of a magnetic field and heated or cold obstacles significantly affect the flow and heat transfer characteristics. This research is of great importance for optimizing the design of trapezoidal cavities and various industrial applications.
Article
Materials Science, Composites
H. Mohit, M. R. Sanjay, Suchart Siengchin, Belal Kanaan, Vakkar Ali, Ibrahim M. Alarifi, Tarek M. A. A. El-Bagory
Summary: Dried leaves-cobalt fillers showed higher mechanical and thermal stability in epoxy, vinyl-ester, and polyester polymers. Fourier-transform infrared spectra and scanning electron microscope analysis revealed the production of novel hydroxyl functional groups and strong interfacial bonding between the fillers and the matrix. Additionally, dried leaves-ferrous filler-reinforced polymer hybrid composites exhibited higher thermal stability. The statistical analysis showed significant outcomes under a confidence level of 95%.
POLYMER COMPOSITES
(2023)
Article
Engineering, Mechanical
Venkatesh Chenrayan, V. Vaishnav, Kiran Shahapurkar, Chandru Manivannan, Vineet Tirth, Ibrahim M. Alarifi, Mohammed A. Alamir, Catalin I. Pruncu, Luciano Lamberti
Summary: This research focuses on developing an improved tribological performance material made of Al7075 alloy reinforced with TiB2 and graphene. The wear rate decreases as graphene content becomes higher. At room temperature, the wear mechanism is driven by adhesion, while abrasion governs the wear process at high temperatures.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Usman, Waqar A. Khan, Naseem Uddin, Taseer Muhammad
Summary: Nanofluids are widely used in engineering equipment in medicine, chemical and power engineering, electronics, and other fields. The low concentration of nanoparticles in nanofluids allows for improved mass and heat transport. This study re-examines famous flow problems, such as viscous, incompressible, Newtonian, and 2-D laminar flow, to investigate mass and heat transmission rates for carbon nanotubes in water-based nanofluids with varying magnetic fields and external pressure gradients. The study finds that the rates of shear stress, mass, and heat transport decrease with increasing magnetic field, while the pressure gradient parameter facilitates faster heat and shear stress transmission rates.
