Article
Polymer Science
Shuogeng Yan, Kun Wang, Zhengzhi Wang
Summary: This study investigates the effect of nano-silica particles on the mechanical properties of dental resin composites. It combines dynamic nanoindentation tests and macroscale tensile tests to analyze the reinforcing mechanism of the composites. The results show that the tensile modulus and strength of the composites increase with the increase in particle contents. Nanoindentation tests also reveal an increase in storage modulus and hardness with increasing testing frequency. The study further identifies a gradient boundary layer that helps alleviate shear stress concentration on the filler-matrix interface.
Article
Chemistry, Multidisciplinary
Yonghui Zhou, David Hui, Yuxuan Wang, Mizi Fan
Summary: This article presents the assessment of mechanical properties of rubber-wood-plastic composites (RubWPC) and their correlations. The results showed that the composites treated with multiple coupling agents exhibited superior interfacial bonding quality and nanomechanical property.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Emre Ozer, Mehmet Ayvaz, Mustafa Ubeyli, Ibrahim Sarpkaya
Summary: This research investigated the effects of heat treatment and hybrid reinforcement ratio on the microstructural and mechanical properties of Al-4Cu nanocomposites. The study found that the addition of nano reinforcements significantly increased the nanohardness and elastic modulus of the composites. Furthermore, the use of hybrid reinforcements improved the compressive yield strength of the composites.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Chuan Xu, Xinjian Yuan
Summary: In this study, ultrasonic vibration assistance (UVA) treatment was applied to improve the microstructure, corrosion resistance, and mechanical properties of Ti/Mg dissimilar metal joints. The UVA process successfully refined the coarse grains in the weld zone, resulting in the formation of a more tenacious and adherent protective layer and a reduced corrosion rate. Under the optimized ultrasonic parameters, the mechanical property of the Ti/Mg joint was improved by 11.4% compared to joints without ultrasonic treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Fevzi Kelen
Summary: Novel magnesium matrix hybrid composites were developed using the hot pressing technique with titanium and nickel micro particles as reinforcing materials. A clean interface was achieved without porosity, oxide, and unwanted secondary phases. The presence of the Mg2Ni phase was confirmed through XRD analyses, and its intensity increased with the amount of reinforcement. The addition of Ti and Ni resulted in significant improvements in yield strength and compressive strength without compromising ductility, making the hybrid composites a promising alternative to traditional materials for automobile components.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
K. Showkat Ali, R. Karunanithi, M. Prashanth, S. Sivasakaran, B. Subramanian, H. Siddhi Jailani
Summary: The main aim of this study was to produce in-situ alpha-Ti/TiO2/TiC hybrid composites from CP-Ti powders through mechanical milling and spark plasma sintering techniques. The results showed that longer milling time led to the formation of Ti, Ti3O5, TiO, TiO2 phases, and dissolved C atoms from the process control agent. These were then converted to alpha-Ti, TiO2, and TiC phases through spark plasma sintering. The micro-hardness results demonstrated that increasing milling time improved the hardness due to grain refinement and the formation of TiO2/TiC intermetallic particles.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zhongmeng Shi, Chao Zou, Feiyu Zhou, Jianping Zhao
Summary: The UV durability of carbon fiber composites was studied by exposing carbon fiber-reinforced polymer (CFRP) materials to UV radiation. It was found that UV aging caused a decline in mechanical properties, especially in longitudinal compressive strength, and resulted in embrittlement of the matrix at the microscopic level.
Article
Materials Science, Ceramics
Sijia Huo, Yujin Wang, Mianyi Yao, Zhikun Zhang, Lei Chen, Hui Gu, Jiahu Ouyang, Yu Zhou
Summary: Novel TiC-based composites were synthesized with ZrB2 addition as a sintering aid, exhibiting excellent mechanical properties surpassing most TiC-based composites using ceramics as sintering aids. The addition of ZrB2 led to enhanced hardness, flexural strength, and fracture toughness of the materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Congcong Wu, Jun Peng, Weiwen Pu, Shengnan Lu, Chao Zhang, Nan Wu, Zhaoru Sun, Hongti Zhang, Hung-Ta Wang
Summary: The study found that alpha-Sb2O3 nanoflakes exhibit unique bending properties, with a low Young's modulus and remarkable maximum tensile strain, which are attributed to the high-symmetry vdW bonding structure. The vdW nanomechanics have fundamental and technological relevance to nanoelectronics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Polymer Science
Mohammad Asif Alam, Ubair Abdus Samad, Arfat Anis, Manawwer Alam, Mohd Ubaidullah, Saeed M. Al-Zahrani
Summary: This study focuses on the development of synergistic formulations using nano-pigments to enhance the mechanical properties of epoxy coatings on steel substrates and structures. The incorporation of nano-silica and ZnO particles in the composite led to improved durability and predicted service life of the nanocomposite coatings. Nanoindentation, Fourier transform infrared spectroscopy, and X-ray diffraction were used to evaluate the mechanical properties and durability of the coatings before and after exposure to a NaCl solution.
Article
Chemistry, Physical
Furqan Ahmed, Muhammad Zain-ul-Abdein, Iftikhar Ahmed Channa, Muhammad Kamran Yaseen, Sadaf Jamal Gilani, Muhammad Atif Makhdoom, Muhammad Mansoor, Usman Shahzad, May Nasser bin Jumah
Summary: Ultrasonic surface mechanical attrition treatment (SMAT) can refine the grain size of titanium samples, leading to significantly improved mechanical properties such as hardness, tensile strength, surface energy, and biocompatibility.
Article
Materials Science, Multidisciplinary
Zhaoxin Zhong, Biao Zhang, Yuhan Ren, Jian Ye, Jiawei Zhang, Feng Ye
Summary: In this study, bioinspired web-liked multiphase composites were successfully constructed using boron-modified polysilazane polymer. The composites consisted of long TiB nanowires as 'web' and hybrid TiC and Ti3Si particles as 'nodes'. The enhanced strength of these composites was attributed to the synergistic load transfer of the hybrid reinforcements. This study provides a promising design approach for developing high-performance composites with high reinforcement content, utilizing polymer instead of traditional ceramic powder.
MATERIALS CHARACTERIZATION
(2024)
Review
Materials Science, Multidisciplinary
Zhanwei Yuan, Huan Liu, Zhe Ma, Xinkai Ma, Kai Wang, Xuemin Zhang
Summary: CoCrFeNiMo0.2 high entropy alloy (HEA) particle reinforced titanium matrix composites were prepared by hot pressing sintering in vacuum. The microstructure, composition, and mechanical properties of the composites were studied at different sintering temperatures. Results showed that the formation of an interface layer between the particles and the matrix contributed to the increase in mechanical properties. However, at higher sintering temperatures, the dissolution and diffusion of the HEA particles weakened the strengthening effect, leading to a decrease in mechanical properties.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Yingmei Tan, Hongze Fang, Yangli Liu, Xuan Wang, Ruirun Chen, Feng Cao, Yanqing Su, Jingjie Guo, Hengzhi Fu
Summary: In this study, ultrasonic treatment was used to improve the macro/microstructure and mechanical properties of Ti2AlN/Ti46Al4Nb1Mo composites. The results showed that ultrasonic treatment reduced the shrinkage area and gamma phase, changed the shape of Ti2AlN particles and shortened their length. These changes were due to the increase in nucleation supercooling and melt flow capacity. The improvement in compressive properties was mainly attributed to the reduced size of Ti2AlN and gamma phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Y. Zhou, A. Fillon, D. Laille, T. Gloriant
Summary: Nanoindentation combined with electron backscatter diffraction (EBSD) was used to investigate the crystallographic anisotropy of indentation responses of individual grains in superelastic Ti2033 alloy. The results showed that the pronounced anisotropy behaviors of indentation modulus, depth, and work recovery ratios were due to the anisotropy in Young's modulus and compressive lattice distortion between the bcc structure of beta phase and the orthorhombic structure of the stress-induced alpha martensite phase. Nevertheless, orientation dependence disappeared when plastic deformations occurred, and the orientation-independency in indentation hardness was attributed to the various slip systems activated within bcc crystals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Thermodynamics
A. James, M. Mohanraj, M. Srinivas, S. Jayaraj
Summary: This article reviews the thermal analyses of heat pump systems using photovoltaic-thermal collectors, including energy balance equations, thermodynamic performance evaluation equations, and reported investigations. Various configurations of photovoltaic-thermal collectors show potential for drying, water heating, and space heating applications, but there are limitations that need further research to address.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Review
Thermodynamics
M. Mohanraj, J. D. Andrew Pon Abraham
Summary: This paper reviews the environmentally friendly refrigerant options for automobile air conditioners. It presents the characteristics of these options and summarizes the research investigations conducted on them. The paper concludes that hydrocarbon refrigerants will dominate the automobile air conditioning sector, while carbon dioxide is a good option for electric vehicles operating at low ambient conditions. However, hydrofluoroolefins are identified as an interim option due to their decomposition and harmful effects on the aquatic environment.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Ramasamy Dhivagar, Murugesan Mohanraj
Summary: In this study, the performance of a single slope solar still was improved by utilizing graphite plate fins and magnets, which resulted in increased productivity, energy, and exergy efficiency compared to conventional solar stills under the same climate conditions. The economic and environmental benefits were evaluated over a 10-year period, showing reduced CO2 emissions and carbon credits earned with the improved solar still design. Distillate quality from both systems met the standards set by the Bureau of Indian Standards.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Mechanical
T. Ramkumar, M. Selvakumar, M. Mohanraj, A. P. Senthilkumar, P. Narayanasamy
Summary: In this research, the detailed morphology and thermal behavior of AISI 4140 steel coated with ZnO-Mg were studied. The results showed that the 30 µm coating thickness exhibited enhanced thermal properties compared to other coated samples, making it a potential candidate material for automotive applications.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2021)
Article
Environmental Sciences
Ramasamy Dhivagar, Murugesan Mohanraj, Balakrishnan Deepanraj, Vaiyapuri Senthil Murugan
Summary: The use of magnets in solar stills significantly improved daily productivity and economic benefits, with block magnets showing more pronounced effects than disc magnets. The magnetization of saline water was found to significantly enhance the performance of solar stills compared to traditional systems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
M. Sivakumar, S. Mahalingam, M. Mohanraj
Summary: This research focuses on enhancing the volumetric efficiency of a compressor in solar thermal heat pump systems. By utilizing a direct expansion packed bed evaporator-collector, the system effectively harvests solar energy and maintains superheat at a desirable level. The results show improvements in both coefficient of performance and heating capacity when compared to a direct expansion flat bed evaporator collector. Moreover, the proposed heat pump configuration demonstrates a short payback duration and significant reduction in CO2 emissions.
Article
Engineering, Mechanical
T. Ramkumar, A. Haiter Lenin, M. Selva Kumar, M. Mohanraj, S. Christopher Ezhil Singh, M. Muruganandam
Summary: This study investigated the joining process of AA2014 and AA6061 aluminum alloys using the Friction Stir Welding (FSW) process. The rotational speed of the tool was varied, and the mechanical properties of the weldments were evaluated. The results showed that rotational speed significantly affected the hardness, tensile strength, and flexural strength of the welded joints.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
R. Dhivagar, B. Deepanraj, M. Mohanraj, A. Prakash
Summary: This research assessed the thermal analysis of a heat pump assisted regenerative solar still (HPARSS) using slack wax heat storage material and compared it with a conventional solar still (CSS). The results showed that HPARSS had higher cumulative productivity, energy efficiency, and coefficient of performance compared to CSS. It can significantly reduce the demand for potable water.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
R. Dhivagar, B. Deepanraj, M. Mohanraj, Hwai Chyuan Ong
Summary: This study explores the thermodynamic analysis of crushed gravel sand and biomass evaporator assisted solar still (CBSS) using the second law, and compares the results to conventional solar still (CSS) under the same climatic conditions. The CBSS shows significant improvements in air vapour temperature, saline water temperature, cumulative productivity, and exergy efficiency compared to the CSS. Furthermore, the CBSS greatly reduces the demand for potable water.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Environmental Sciences
M. Lenin Sundar, S. Ragunath, J. Hemalatha, S. Vivek, M. Mohanraj, V. Sampathkumar, A. Mohammed Siraj Ansari, V. Parthiban, S. Manoj
Summary: In recent years, groundwater modelling has become an important part of projects dealing with groundwater exploitation, protection, and remediation. This study focuses on the groundwater quality along the Noyyal River in Coimbatore city, Tamilnadu. The results show that the center portion of the study area is highly affected and pollutants easily move downstream. Therefore, measures are necessary to control groundwater contamination.
Article
Energy & Fuels
A. Tamilvanan, P. Jeyalakshmi, M. Mohanraj, B. Deepanraj
Summary: This study investigates the influence of raw Simarouba glauca Seed Oil (SSO) and its biodiesel (SSOB) on the performance, combustion, and emissions of a diesel engine. The results show a slight loss in performance and inferior combustion on higher blends. SSOB blends exhibit better performance and combustion compared to SSO blends.
Article
Engineering, Mechanical
P. Muthusamy, M. Mohanraj, T. Ramkumar, M. Selvakumar
Summary: In this study, Ti-3Al-2.5 V-xWC composites were fabricated using microwave sintering technique, and their properties were characterized. The results showed that higher density and shorter sintering time improved the mechanical properties and wear behavior of the composites.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Sadasivam Sivakumar, Kathirvelsamy Siva, Murugesan Mohanraj
Summary: This article evaluates the energy performance and economic feasibility of a solar air collector and compression heat pump integrated solar humidifier desalination system. The effects of solar heat flux, ambient wind speed, and ambient temperature on system performance are investigated. The system achieves a maximum distillate output of 22.3 liters per day and delivers 100 liters of hot water at 46 +/- 2 degrees C. The proposed system has a payback duration of 27.62 months and releases 32.35 tons of carbon dioxide emissions during its 15-year lifespan. The quality of the water obtained is suitable for drinking and enriched with minerals.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Alosh James, Smruti Ranjan Sahoo, Arun K. Raj, Murugesan Mohanraj, Mokkalla Srinivas, Simon Jayaraj
Summary: Photovoltaic-thermal (PV-T) systems offer a solution to prevent overheating and improve performance by converting waste heat into useful energy. This study analyzes different materials and flow configurations using COMSOL Multiphysics software. The results show that with an absorber plate, there is a significant decrease in PV panel temperature (4-5 K) and an increase in outlet fluid temperature (2-8 K), resulting in improved performance. The performance difference between copper and aluminum plates is minimal (2%).
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Chandrasekaran Senthilkumar, Annur Srinivasan Krishnan, Arulanantham Brusly Solomon, Murugesan Mohanraj
Summary: This study investigates the enhancement of heat pipe thermal performance by applying a thin layer of copper coating on the inner surface of a wickless heat pipe (WHP). The coated WHP is compared with an uncoated WHP using R134a, R290, and R600a as working fluids. The effects of fluid fill ratio, angle, and heat input on the thermal performance of both coated and uncoated WHPs are examined. The results show that the coated WHP, particularly at a 45-degree inclination, has improved thermal performance compared to the uncoated WHP. R600a is identified as a favorable working fluid due to its thermophysical properties that result in low thermal resistance and improved heat transfer coefficients.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
