Article
Chemistry, Multidisciplinary
Zhenyu Zhang, Yuefeng Du, Chunhua Zhu, Liangchao Guo, Yao Lu, Jinhong Yu, Ivan P. Parkin, Junhua Zhao, Dongming Guo
Summary: This study developed novel ER/graphene composites, showing that the wear resistance with 5 wt% graphene content was significantly higher than pure ER. The enhancement mechanisms of graphene reinforcement were determined by molecular dynamics simulations.
Article
Polymer Science
Jasem Ghanem Alotaibi, Ayedh Eid Alajmi, Gabrel A. Mehoub, Belal F. Yousif
Summary: The research found that GFRE composites with AP-O fibers had the highest wear rates, while GFRP composites with P-O fibers had the highest wear rates. Composites with P-O and N-O fibers had the lowest wear rates at longer sliding distances.
Article
Engineering, Chemical
Napisah Sapiai, Aidah Jumahat, Mohammad Jawaid, Carlo Santulli
Summary: Kenaf fibers have been studied as potential replacements for synthetic fibers in fiber-reinforced polymer composites. This research investigated the effect of filling kenaf-epoxy fiber composites with different types of multiwall carbon nanotubes (MWCNT) on wear behavior. It was found that untreated MWCNT provided a modest reduction in wear rate, while acid-treated MWCNT increased wear rate and silane-treated MWCNT improved interfacial bonding but caused rougher worn debris, leading to a three-body abrasive wear effect.
Article
Materials Science, Composites
Mingkun Xu, Qihua Wang, Tingmei Wang, Liming Tao, Song Li
Summary: The tribological models of PI reinforced by CNTs with different orientations were constructed via molecular dynamic simulation. The results showed that the PI composites reinforced by X- and Z-oriented CNTs exhibited higher atomic concentration, interfacial temperature, and shear strength compared to those reinforced by Y-oriented CNTs.
POLYMER COMPOSITES
(2022)
Review
Polymer Science
M. M. A. Baig, M. Abdul Samad
Summary: Epoxy composite coating systems are commonly used in applications to protect components from corrosive media, but their use in demanding tribological applications is limited. Researchers have attempted to enhance the tribological properties of these coatings by utilizing different types of micro/nano-sized fillers.
Article
Polymer Science
Ayedh Eid Alajmi, Jasem Gh Alotaibi, B. F. Yousif, Umar Nirmal
Summary: Research on tribological behavior of bamboo fiber reinforced epoxy composites showed that specific wear rate reduced and different wear mechanisms were observed, indicating the potential benefits of using natural fibers in polymer composites for reducing harmful material emissions into the ecosystem.
Article
Engineering, Mechanical
Urszula Szeluga, Karolina Olszowska, Slawomira Pusz, Jerzy Myalski, Marcin Godzierz, Anastasiia Kobyliukh, Boyko Tsyntsarski
Summary: The study investigates the effect of carbon foam grain size on the properties of epoxy composites, showing that different sizes of carbon foam grains can enhance thermomechanical and tribological properties with relatively low density. Microscopic analysis reveals good dispersion of carbon foam filler in epoxy matrix and excellent adhesion at interfacial areas.
Article
Materials Science, Composites
Jingwei Tian, Chenggao Li, Guijun Xian
Summary: Nanometer-sized TiO2 particles have been found to enhance the mechanical and tribological properties of epoxy composite coatings. The optimal mixture ratio of TiO2 is 4 wt%, with treated nanoparticles and a three-roll mill grinding technique significantly improving the tensile strength, modulus, elongation at break, wear resistance, and frictional coefficient of the composites. The uniform dispersion of TiO2 particles plays a key role in enhancing the wear resistance of the composites.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Multidisciplinary
Lokesh Vaddar, Basava Thatti, Bijjam Ramgopal Reddy, Suneetha Chittineni, Nandipati Govind, Miditana Vijay, Chandrashekar Anjinappa, Abdul Razak, ChanduVeetil Ahamed Saleel
Summary: The impact of carbon nanopowder filler on the wear and thermal performance of the chopped strand mat E-glass fiber-reinforced epoxy composite (GFREC) was analyzed in this investigation. The addition of carbon nanopowder has a substantial impact on the wear behavior of composites, mainly due to the homogeneity created by the carbon nanofillers in uniformly dispersing the reinforcements in the matrix phase. The optimal parameters for efficient reduction of specific wear rate were found to be a load of 1.005 kg, a sliding velocity of 1.499 m/s, a sliding distance of 150 m, and 15 wt% of filler.
Article
Materials Science, Textiles
P. Venkateshwar Reddy, R. V. Saikumar Reddy, P. Rajendra Prasad, D. Mohana Krishnudu, R. Meenakshi Reddy, H. Raghavendra Rao
Summary: The present study explored the potential usage of natural fiber reinforced composites (NFC) for industrial applications and analyzed the mechanical and wear behavior of three different NFCs. The results showed that prosopis juliflora fiber exhibited improved mechanical and wear behaviors compared to the other two NFCs.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Manufacturing
Verena Wulf, Ada Pui-yan Hung, Adi Hendler-Neumark, Weibai Li, Olga Shamis, Michael Gozin, Xiaodong Huang, Alan Kin Tak Lau, Gili Bisker
Summary: Noise pollution poses a threat to health and well-being, and its prevalence has been increasing. Incorporating fluorescent single-walled carbon nanotubes (SWCNTs) into epoxy resins can improve their sound-dampening capabilities. The DNA-SWCNT/epoxy composites showed the highest transmission loss, with an 18% improvement compared to epoxy alone, and the optimal concentration of DNA-SWCNT was found to be 2 mg L-1. Additionally, the near-infrared fluorescence of SWCNTs was utilized to characterize their distribution within the epoxy resin.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Polymer Science
Tatiana P. Dyachkova, Yulian A. Khan, Elena A. Burakova, Evgeny V. Galunin, Gulnara N. Shigabaeva, Dmitry N. Stolbov, Georgy A. Titov, Nikolay A. Chapaksov, Alexey G. Tkachev
Summary: This paper discusses the development of fillers made from mixtures of carbon nanotubes and graphene materials to modify epoxy resin. The effects of different types and contents of graphene on the particle sizes of the dispersed phase in aqueous suspensions and the resin were analyzed. The optimal dispersions were achieved at a mass ratio of 1:4 between carbon nanotubes and graphene oxide, with particle sizes of 75-100 nm. The composites showed increased tensile strength and modulus when containing 0.15-0.20 wt.% of carbon nanotubes/graphene oxide at a ratio of 1:1.
Article
Mechanics
Zhiqiang Yao, Chengguo Wang, Yanxiang Wang, Jianjie Qin, Ziming Ma, Xuanhao Cui, Qifen Wang, Huazhen Wei
Summary: Depositing a thin layer of carbon nanotubes on the surface of carbon fibers through chemical vapor deposition and subsequently aminating them can significantly enhance the interfacial properties and bonding strength of carbon fiber/epoxy composites.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Ceramics
Sourav Goswami, Kunal Ghosh, Ranajit Ghosh, Nilrudra Mandal
Summary: Research shows that the addition of 0.1 wt% multi-walled carbon nanotubes (MWNTs) significantly improves the antifriction and anti-wear performance of zirconia-toughened alumina. Dry sliding tests reveal a load-dependent transition in the lubrication mechanism, where low loads result in reduced friction through sliding-rolling response of CNTs, and high loads lead to the formation of a uniform lubricating film through the crushing and smearing of nanotubes. This work opens new possibilities for the application of CNT-alumina tribo-ceramics in industries such as manufacturing and mining.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Karthik Srinivas Venkataraman, Albert E. Segall, Koki Urita, Cira Feeney, Ron Sherant, Chiharu Urita, Ben Madden, Matthew Krohn, Fernando Vallejos-Burgos
Summary: This study aimed to gain a fundamental understanding of the friction and wear mechanics of epoxy reinforced by graphene-based fillers. The results showed that epoxy +5 wt% iGO demonstrated a lower wear rate among other fillers, with 1 wt% being the best for a range of iGO content. The addition of iGO improved the friction and wear resistance due to functional groups on the surface and the resulting enhanced adhesion.
TRIBOLOGY TRANSACTIONS
(2022)
Article
Materials Science, Composites
Rihem Chaaben, Rym Taktak, Basma Mnif, Noamen Guermazi, Khaled Elleuch
Summary: In this study, a novel biocomposite with poly(methyl methacrylate) as resin containing Salvadora persica powders was developed to enhance the bioactive performance of dental restoration materials. Material characterization showed the presence of organic and mineral chemicals compounds of S. persica in the dental material, which are responsible for biological activities and dental applications. The study also proved the absence of toxic residual monomers and demonstrated the antioxidant and antibacterial activities of the composite.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
Article
Mechanics
Rachida Barkallah, Rym Taktak, Noamen Guermazi, Khaled Elleuch, Jamel Bouaziz
Summary: This research work investigates the impact of adding synthesized Tricalcium Phosphate and commercial Titania powder to Alumina on its properties, with a focus on creating a bioactive coating for orthopedic implants. The best wear resistance and lowest friction coefficient were observed for the Al2O3-10 wt % TCP-5 wt% TiO2 formulation under dry conditions. This composition also exhibited the best mechanical and fracture properties in terms of micro-hardness and fracture toughness.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Ceramics
Mouna Kallel, Zied Antar, Mouna Masseoud, Silvia Vesco, Massimiliano Barletta, Khaled Elleuch
Summary: In this study, Ni-B-TiO2 composite coatings were compared in terms of microstructure, adhesion strength, and wear resistance. It was found that the novel method produced coatings with superior scratch response and wear resistance due to a compact structure, while the traditional method resulted in porous coatings with mediocre mechanical properties.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Abdelwaheb Zeidi, Fatma Ben Saada, Khaled Elleuch, Hakan Atapek
Summary: The research focused on premature AISI D2 punch damage in thick S500 MC plettac, with results showing that various factors such as corrosion, wear, fatigue, cracking, scaling, mating, and inflation contribute to a short service life.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Chemistry, Physical
Anas Ben Romdhane, Delphine Veys-Renaux, Mouhamadou Moustapha NDiaye, Stephanie Bruyere, Khaled Elleuch, Emmanuel Rocca
Summary: This study investigates the anodizing of AS12 alloys in various alkaline media, providing insights into the role of silicon in the aluminum matrix on the duplex nanostructure formation and micro-arc anodizing initiation. Addition of fluorides or silicates enhances the resistive properties of the internal anodic layer, improving the efficiency of the anodizing process. The corrosion resistance of AS12 in NaCl 0.1 M is increased by the presence of the oxide coating and the nature of the additive incorporated compounds.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Mechanical
Abdelwaheb Zeidi, Fatma Ben Saada, Khaled Elleuch, Hakan Atapek
Summary: This study aimed to analyze the damage of AISI D2 punch head, identifying main causes such as back up plate wear and fatigue, low toughness, poor heat treatment, and non-optimized punch-gun drill clearance. Various methods including SEM, EDS, XRD, and micro hardness were used to investigate different types of damaged punches and compare them. Improving punch design, optimizing clearance, and implementing new punch guiding solutions are essential in enhancing punching conditions and preventing premature tool damage.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Chemistry, Analytical
Marah Trabelsi, Al Mamun, Michaela Kloecker, Imane Moulefera, Anton Pljonkin, Khaled Elleuch, Lilia Sabantina
Summary: Electrospinning allows for the production of magnetic nanofibers, with the carbonization process being crucial for enhancing electrical conductivity. The addition of nanoparticles can improve the morphological properties and thermal stability of the nanofibers. These carbonized nanofibers exhibit high conductivity, magnetization, and electromagnetic interference shielding properties, making them suitable for applications such as single photon avalanche diodes (SPAD).
Article
Green & Sustainable Science & Technology
Sofiene B. M. Hammami, Sami Chaari, Narjes Baazaoui, Riadh Drira, Noureddine Drira, Karim Aounallah, Asma Maazoun, Zied Antar, Jesus V. Jorrin Novo, Taoufik Bettaieb, Hava F. Rapoport, Besma Sghaier-Hammami
Summary: The date palm, a tolerant fruit species to salt stress, shows the ability to exclude chloride ions and adjust biomass allocation according to stress levels. Both leaves and roots play important roles in this tolerance strategy.
Article
Materials Science, Multidisciplinary
F. Zouch, A. Bahri, K. Elleuch
Summary: This study examines the impact of barite rocks on hammers made from HCWCI using a three-dimensional finite element model. The main findings show that mass loss is strongly influenced by impact conditions.
JOURNAL OF DYNAMIC BEHAVIOR OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
B. Dridi Rezgui, I. Touhami, F. Khan, K. Ben Messaoud, C. Ben Alaya, Z. Antar, M. Bouaicha
Summary: An intermediate complex approach and a preheating strategy are used to successfully grow mixed-cation FA1xCsxPbI3 perovskite films in ambient air. This is achieved through effective PbI2 conversion and eliminating the detrimental moisture effect, ensuring the formation of an intermediate complex and rapid solvent evaporation induced by preheating. Moreover, controlling the [CsI]/[FAI] ratio influences the crystallization of the alpha-perovskite phase and effectively inhibits the growth of non-perovskite crystallites, stabilizing the photoactive alpha-phase. X-ray diffraction analysis reveals a change in crystal orientation and a decrease in band gap energy with 35% CsI added in the perovskite precursor, and improved stability in the (111) direction.
Article
Engineering, Mechanical
Fatma Ben Saada, Mariem Ben Saada, Khaled Elleuch, Pierre Ponthiaux
Summary: Nanopeening treatment enhances the mechanical and corrosion properties of AISI 420 steel, reducing its sensitivity to tribocorrosion damage.
Article
Multidisciplinary Sciences
F. Zouch, A. Bahri, Z. Antar, K. Elleuch
Summary: Barite sulfate (BaSO4) is an important mineral used in drilling fluids. The wear performance of high chromium white cast iron (HCWCI) and heat-treated steel AISI P20 was compared, with AISI P20 showing better wear resistance. The wear mechanism for HCWCI was abrasive wear, characterized by crack network throughout the carbide phase, while for AISI P20 it was characterized by grooves and ploughing phenomena. The wear depth and worn area increased with increasing load for both materials.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Mechanical
Amir Bahri, Manel Ellouz, Michaela Kloecker, Khaled Elleuch, Thomas Kordisch
Summary: TiN coatings were deposited on stainless steel X2CrNi18-9 and Vickers and Brinell indentation tests were performed. The results showed that the increase of applied load influenced the coating and coating/substrate damage evolution. SEM examination revealed various damage modes such as inclined cracks, radial cracks, lateral cracks, edge cracks, and shear steps. Numerical simulations of Brinell indentation indicated that the coating started to fail at a stress range above 5735 MPa, with cracks observed at a load of 613 N.
INTERNATIONAL JOURNAL OF MECHANICS AND MATERIALS IN DESIGN
(2023)
