Article
Materials Science, Composites
K. Chellamuthu, A. Vasanthanathan
Summary: The potential benefits of using zinc borate powder as filler material in glass fiber-reinforced composites were explored in this study. The results showed that the addition of zinc borate particles significantly improved the mechanical and thermal properties of the hybrid composites.
POLYMER COMPOSITES
(2023)
Article
Construction & Building Technology
Dilshad Ali, Rachit Agarwal, Mohd Hanifa, Pradeep Rawat, Rakesh Paswan, Devendra Rai, Inderjeet Tyagi, B. Srinivasarao Naik, Ashish Pippal
Summary: Biochar made from different percentages of sawdust was used to replace cement in cementitious materials, resulting in reduced environmental pollutants and landfill waste. Through various tests, it was found that the addition of biochar improved the hydration products, compressive strength, and thermal properties of the cementitious compounds. The 3 wt% replacement showed the best performance among the three different replacements.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Jinshuang Wang, Mengdi Chen, Yinghui Wang, Bing Li, Yongsheng Yu, Yongshang Tian, Bing Liu, Qiangshan Jing
Summary: The study found that LAT ceramic has a lower thermal conductivity and excellent thermal stability, but premature failure occurred during the thermal cycling test.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Saipad Bhakta Bhagabati Prasanna J. Sahu, Subhakanta Nayak, Sibakanta Sahu, Manmatha Kumar Roul
Summary: This study reports the mechanical, thermo-physical, and water absorption properties of Cascabela thevetia (CT)-Calotropis gigantean (CG)/epoxy natural fiber hybrid composites. The results show that composites with a weight ratio of CT and CG fibers of 3:1 exhibit the highest mechanical properties.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Kyung-Min Kim, Hoon Kim, Hyun-Joong Kim
Summary: The thermal and mechanical properties of epoxy/fumed silica composite can be improved by different surface treatments of fumed silica. The addition of silica nanoparticles enhances the thermal stability and flexural strength of the composite, making it commercially promising.
Article
Chemistry, Physical
Xunda Liu, Hiroaki Tatsumi, Zhi Jin, Zhong Chen, Hiroshi Nishikawa
Summary: To ensure optimal working conditions for next-generation power modules, it is crucial to have a comprehensive understanding of the thermo-mechanical properties of the joint layer between the chip and substrate. This study proposes a straightforward method to fabricate densified and pure Ag9In4 bulk samples, which can be a promising candidate for the joint layer. The properties of Ag9In4, including Young's modulus, hardness, creep behavior, and coefficient of thermal expansion, were measured over a temperature range of 30°C to 250°C.
Article
Metallurgy & Metallurgical Engineering
Jun Fang, Yong-hui Zhong, Ming-kuang Xia, Feng-wei Zhang
Summary: Adding 1 wt.% Cu or 1 wt.% Mg to Al-Si alloys significantly improves tensile strength by 27.2% and 24.5% respectively, while only reducing thermal conductivity by 7.3% and 6.8% respectively. This enhances the strength of the alloys while maintaining excellent thermo-physical properties.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Polymer Science
C. N. Aiza Jaafar, I. Zainol, M. I. Izyan Khairani, T. T. Dele-Afolabi
Summary: The effects of filler loading and silane coupling agent on the properties of hydroxyapatite-filled high density polyethylene composites were investigated. The developed composites exhibited enhanced mechanical performance and low cytotoxicity, suggesting great potential for biomedical applications.
Article
Materials Science, Composites
Patcharapon Somdee, Manauwar Ali Ansari, Kalman Marossy
Summary: In this study, flexible and rigid polyurethane/copper composites were prepared via a simple solution casting process. The dispersion and chemical bonding of the filler were investigated, and the thermal properties and mechanical properties of the composites were analyzed. The results showed that the thermal conductivity of the composites was significantly improved compared to the pure polyurethane, and the mechanical properties were also enhanced. The study suggests that copper microparticles can serve as an active filler in both flexible and rigid polyurethane matrices.
POLYMER COMPOSITES
(2023)
Article
Engineering, Multidisciplinary
M. Alosaimi, D. Lesnic, J. Niesen
Summary: This study numerically investigates the simultaneous estimation of various thermo-physical properties of multi-layered tissues based on internal temperature measurements, achieving accurate and stable reconstruction of these properties for treatment decision-making.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Materials Science, Textiles
Macaulay M. Owen, Emmanuel O. Achukwu, Hazizan Md Akil, Ahmad Z. Romli, Mohd Shukur Zainol Abidin, Innocent O. Arukalam, Umaru S. Ishiaku
Summary: The effect of different concentrations of epoxy surface coating treatment on the thermal and mechanical properties of kenaf fiber reinforced recycled poly (ethylene terephthalate) (RPET) composites was studied. The results showed that the epoxy-coated composites exhibited improved thermal and mechanical properties, as well as enhanced fiber/matrix bonding.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Polymer Science
Hafsa Jamshaid, Rajesh Kumar Mishra, Vijay Chandan, Shabnam Nazari, Muhammad Shoaib, Laurent Bizet, Tatiana Alexiou Ivanova, Miroslav Muller, Petr Valasek
Summary: This paper presents a study on novel prepregs for thermoplastic matrix impregnation. Different composite prepregs based on polypropylene and natural fiber reinforcement (basalt and jute fibers) were developed and their mechanical and dynamic mechanical properties were investigated. Basalt fiber composites exhibited superior mechanical properties compared to jute fiber composites, with improved thermal stability shown in thermo-gravimetric analysis (TG/DTG) results. Microscopic images of the fractured samples demonstrated better fiber-matrix interaction due to the novel prepreg technology. Single-ply and 2-ply prepregs showed significantly improved mechanical, thermal, and thermo-dynamical performance compared to pure polypropylene control samples.
Article
Materials Science, Textiles
Helanka J. Perera, Anjali Goyal, Saeed M. Alhassan
Summary: This investigation successfully functionalizes raw date palm fibers (DPFs) using fluoro and non-fluorosilane coupling agents through liquid-phase silanization method. The modified DPFs show improved thermal properties and higher fraction of crystalline cellulose, making them promising reinforcing materials in hydrophobic polymer composites.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Textiles
M. Najeeb, M. T. H. Sultan, A. U. M. Shah, S. N. A. Safri, M. Jawaid, A. R. Abu Talib, A. A. Basri
Summary: This study tested the properties of pineapple leaf fiber composites derived from an underutilized variant of the Yankee pineapple plant. The treated samples showed improved bending strength and dynamic properties compared to the untreated samples, but had a lower cross-linked network.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Textiles
Kandula Ramanaiah, Srinivas Prasad Sanaka, A. V. Ratna Prasad, K. Hemachandra Reddy
Summary: Bio-composites were prepared using broom grass, fishtail palm, sansevieria fibers as reinforcement in unsaturated polyester resin. The effects of fiber content (0 to 39 wt. %) and temperature (30-120 degrees C) on the thermal and fire properties of the composites were investigated. The results showed that increasing fiber content enhanced the insulation capability of the composites, while the insulation capability decreased with temperature. The bio-composites exhibited lower heat transfer rates compared to glass fiber composites and showed better fire resistance properties.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Materials Science, Composites
Farah Hanan, Tabrej Khan, Mohammad Jawaid, Mohamed Thariq Hameed Sultan, Tamer Sebaey, Balbir Singh, Siti Noorbaini Sarmin
Summary: Natural fiber-based materials are widely used as substitutes for synthetic fibers in the composite sector. Experimental study showed that pure kenaf composite has the best complex modulus and thermal stability, making kenaf fibers suitable for aerospace, automotive, and civil engineering applications requiring high dimensional stability and excellent mechanical properties.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Paper & Wood
Lobna A. Elseify, Mohamad Midani, Ayman A. El-Badawy, Said Awad, Mohammad Jawaid
Summary: This study compares date palm fibers with other leaf fibers and finds that date palm fibers have finer diameter, higher cellulose purity, enhanced thermal stability, and high tensile strength. This research helps to identify the potential valorization of date palm fibers.
Article
Chemistry, Multidisciplinary
Mahmoud B. Elsheniti, Saad Zaheer, Obida Zeitoun, Hassan Alshehri, Abdulrahman AlRabiah, Zeyad Almutairi
Summary: This study evaluates the performance of different PV cooling systems under harsh weather conditions. The results show that the PV/T-PCM system has the highest overall energy conversion efficiency and performs well in hot weather.
APPLIED SCIENCES-BASEL
(2023)
Review
Engineering, Environmental
Aatikah Meraj, Surendra Pratap Singh, M. Jawaid, Mohamed Mahmoud Nasef, Taghrid S. Alomar, Najla AlMasoud
Summary: Agricultural residues have gained attention as a widely available waste source for creating value-added products. Lignin, a natural biopolymer, holds potential for developing eco-friendly and low-cost products. This review article discusses the use of natural deep eutectic solvents (NADES) as a sustainable method for extracting and isolating lignin, and also covers pre-treatment methods, advantages and disadvantages, synthesis of NADES, processing of lignin, applications, challenges, and future perspectives. The conclusion highlights the effectiveness of NADES in the purification and isolation of lignin from agro wastes, enhancing the economic value of lignocellulosic biomass.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Polymer Science
Muhamad Hasfanizaam Mat Yazik, Mohamed Thariq Hameed Sultan, Mohammad Jawaid, Norkhairunnisa Mazlan, Abd Rahim Abu Talib, Ain Umaira Md Shah, Syafiqah Nur Azrie Safri
Summary: This study investigates the shape memory properties of a shape memory epoxy polymer (SMEP) nanocomposite incorporated with a hybrid of multi-walled carbon nanotube (MWCNT) and montmorillonite nanoclay (MMT). The nanocomposites were characterized through cyclic thermomechanical tests and fold-deploy tests. The inclusion of the hybrid nanofiller resulted in a decrease in shape recovery, except for the SMEP nanocomposite. The recovery through thermal and electrically activated methods showed similar profiles, with electrically activated recovery reacting faster. The effect of nanofiller inclusion was more prominent in the thermal activation method. The hybrid filler SMEP nanocomposite with 3 wt.% MMT and 1.0 wt.% MWCNT exhibited better shape memory properties. These findings provide guidance for selecting nanofiller loadings based on performance for specific applications in industries such as aerospace, medical, and automotive.
Article
Materials Science, Composites
K. Senthilkumar, M. Chandrasekar, Mohammad Jawaid, Mohamed H. Mahmoud, Hassan Fouad, Carlo Santulli, Sheikh Ahmad Zaki
Summary: The effect of different proportions of pineapple leaf fiber on composites reinforced with olive trunk leaves powder was evaluated. The study measured the tensile properties, moisture absorption, and thermal stability. The results showed that increasing the proportion of pineapple leaf fiber improved the tensile strength, but the hybrid composites were inferior to the parent composites in terms of tensile strength and Young's modulus.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Othman Y. Alothman, Sameer Awad, Ramengmawii Siakeng, Eman M. Khalaf, Hassan Fouad, Nasser Abd M. El-salam, Faraz Ahmed, M. Jawaid
Summary: In this study, PLA/NF biocomposites were prepared by melt extrusion method using locally grown natural fibers as fillers. PEG was added as a plasticizer to improve the processability of the PLA. Mechanical and thermal characterization were conducted to assess the processing effects of PLA/NF biocomposites. The results showed that the mechanical properties of PLA/NF biocomposites were improved compared to PLA. The DMA and TMA analysis revealed slight reduction in storage modulus and loss modulus, while the T-g values from DSC analysis remained unchanged. TMA analysis also showed a significant decrease in coefficient of thermal expansion values for PLA/NF biocomposites. Overall, PLA/NF biocomposites have the potential for novel biocomposite applications, especially in biomedical field, due to their good stiffness, tensile strength, and dimensional stability.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Syed Noman Danish, Zeyad Almutairi, Malik Alshareef
Summary: This study presents a computational fluid dynamics approach to analyze the performance of duct augmented wind turbines. Various duct angles and axial holes in the diffuser are considered and a new formulation for the far-wake velocity is proposed. The results show that increasing the duct angle enhances the performance of the wind turbine, with an average increase in power output by 96% at a duct angle of 20 degrees.
Article
Green & Sustainable Science & Technology
Salah Ud-Din Khan, Irfan Wazeer, Zeyad Almutairi
Summary: In this study, the recent studies on PV systems worldwide and specifically in the GCC region were discussed. The characteristics and classification of PV cells were focused on, along with their efficiency, importance, and negative impacts. The adoption of PV technologies in GCC countries, as well as the technical and economic evaluations for a commercial PV solar project in Riyadh, were examined. The study suggests the development of a low-cost PV system in the Riyadh region.
Article
Green & Sustainable Science & Technology
Mahmoud Badawy Elsheniti, Abdulrahman AlRabiah, Hany Al-Ansary, Zeyad Almutairi, Jamel Orfi, Abdelrahman El-Leathy
Summary: Numerical dynamic simulation models were developed for a hybrid solar concentration photovoltaic/thermal (CPV/T) system and an adsorption refrigeration system (ARS). The proposed solar hybrid system can produce 494.4 kg of ice per day with a higher coefficient of performance (COP) and share 84.5% of the vapor compression refrigeration system (VCS).
Article
Environmental Sciences
Mabrook S. Amer, Prabhakarn Arunachalam, Abdullah M. Al-Mayouf, Ahmad A. Alsaleh, Zeyad A. Almutairi
Summary: A low-cost electrode material is developed for electrocatalytic water and urea oxidation reactions, which are crucial for generating hydrogen. This material exhibits high efficiency and durability in oxygen evolution reaction (OER) and urea oxidation reaction (UOR).
ENVIRONMENTAL RESEARCH
(2023)
Review
Energy & Fuels
Ahmed S. Al-Fatesh, Najib Y. A. AL-Garadi, Ahmed I. Osman, Fahad S. Al-Mubaddel, Ahmed A. Ibrahim, Wasim U. Khan, Yousef M. Alanazi, Maher M. Alrashed, Othman Y. Alothman
Summary: Hydrogen, as an energy carrier, has the potential to replace fossil fuels and reduce environmental pollution. The accumulation of plastic waste materials poses a severe burden on the environment due to the increasing demand for plastics. Thermo-catalytic conversion of plastic waste materials to hydrogen and other fuels is a promising long-term solution to this environmental challenge, but the development of durable and high-efficiency catalysts is a potential challenge for researchers.
Article
Engineering, Biomedical
Majed M. Alsarani, Omar Alsadon, Omar Alageel, Najm Alfrisany, Zeyad Almutairi, Mahmoud A. Al-Gawati, Mayyadah Almozainy
Summary: This laboratory study evaluated the effects of different surface patterns created by femtosecond laser treatment on the shear bond strength between resin composite and zirconia surfaces. The study compared it with the commonly used tribochemical silica coating method. The results showed that the femtosecond laser treated groups had higher surface roughness and water contact angle, and the group with cross lines spaced 30 μm apart exhibited the highest shear bond strength.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Materials Science, Textiles
Alhassan Yakubu Abare, Mohammad Jawaid, Norul Hisham Hamid, Balkis Fatomer A. Bakar, Ahmad Safwan Ismail, Siti Noorbaini Sarmin, Hassan Fouad, Mohamad Midani
Summary: This study investigated the physical, mechanical, morphological, and thermal properties of woven kenaf fibre reinforced bio-epoxy composites. The results showed that increasing fibre loading percentage led to higher density, water absorption, tensile strength, modulus, and impact strength. The optimal properties were achieved with 40% fibre loading in the kenaf/bio-epoxy composites.
JOURNAL OF INDUSTRIAL TEXTILES
(2023)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
