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Online since: April 2023
Authors: Ruben Cuamatzi-Melendez, Melchor Salazar Martinez, Sergio Dionicio Bravo, Adán Ruiz Mendoza
It was reported that one of the suspected factors that caused the cracks was inadequate toughness properties of the steel for low temperature service [1].
The scatter in the upper shelf is in most cases related to a combination of material flow properties, microstructure and strain rate.
Croydon, Investigation of toughness properties of grade A ship plate, CR0 2DS Materials laboratory (1997) 97-3353
Sterjovski, Metallurgical factors affecting the dynamic fracture of naval shipbuilding steels, Defense research and development Canada, Scientific report, DRDC-RDDC-2017-R160 (2019)
Druce, Effect of heat treatment on the fracture toughness transition properties of an A508 Class 3 steel, Fundamentals and applications, Mechanical engineering publications (1991) 587-611
The scatter in the upper shelf is in most cases related to a combination of material flow properties, microstructure and strain rate.
Croydon, Investigation of toughness properties of grade A ship plate, CR0 2DS Materials laboratory (1997) 97-3353
Sterjovski, Metallurgical factors affecting the dynamic fracture of naval shipbuilding steels, Defense research and development Canada, Scientific report, DRDC-RDDC-2017-R160 (2019)
Druce, Effect of heat treatment on the fracture toughness transition properties of an A508 Class 3 steel, Fundamentals and applications, Mechanical engineering publications (1991) 587-611
Online since: October 2023
Authors: David Cajamarca-Zuniga, Oleg Kabantsev
The numerical investigations of masonry under different types of stress are carried out using mathematical models which consider the different properties of masonry as a structural material.
Materials and Methods An experimental study of the mechanical properties of bricks, mortars and their contact interaction as well as diagonally loaded masonry wallets was carried out.
However, making this statement in a generalised way is not correct since the properties of the brick (R1) influence the adhesive behaviour of the samples.
Their use simplifies the process of defining materials and contact properties for FE microstructural analysis of masonry.
Trufanov, Numerical analysis of the effective elastic properties of masonry material (in Russian), Mech.
Materials and Methods An experimental study of the mechanical properties of bricks, mortars and their contact interaction as well as diagonally loaded masonry wallets was carried out.
However, making this statement in a generalised way is not correct since the properties of the brick (R1) influence the adhesive behaviour of the samples.
Their use simplifies the process of defining materials and contact properties for FE microstructural analysis of masonry.
Trufanov, Numerical analysis of the effective elastic properties of masonry material (in Russian), Mech.
Development of Mucoadhesive Film-Forming Systems Containing Black Ginger Extract for Aphthous Ulcers
Online since: October 2021
Authors: Worawut Kriangkrai, Siriporn Taokaew, Somkamol Manchun, Nattanich Wattanaphraya
The mucoadhesive property of FFSs was verified with the wash-off method.
Furthermore, the pain of aphthous stomatitis can affect emotional stability as well as decrease the quality of life [4, 5].
FFS containing Kaempferia parviflora extract for aphthous ulcers was developed and investigated the properties of FFS.
The polymer (PVP, HPMC or HPC) was incorporated into the FFSs for improvement of the mucoadhesive property.
Summary A novel mucoadhesive film-forming system consisting of Eudragit® E100, which has film-forming properties, with additional mucoadhesive properties of additive polymers, that allowed prolonged contact with the mucosal surface.
Furthermore, the pain of aphthous stomatitis can affect emotional stability as well as decrease the quality of life [4, 5].
FFS containing Kaempferia parviflora extract for aphthous ulcers was developed and investigated the properties of FFS.
The polymer (PVP, HPMC or HPC) was incorporated into the FFSs for improvement of the mucoadhesive property.
Summary A novel mucoadhesive film-forming system consisting of Eudragit® E100, which has film-forming properties, with additional mucoadhesive properties of additive polymers, that allowed prolonged contact with the mucosal surface.
Online since: July 2016
Authors: Ramadhansyah Putra Jaya, Siti Nur Amiera Jeffry, Norhafizah Manap, Nurfatin Aqeela Miron, Norhidayah Abdul Hassan
The engineering properties investigated include the volumetric, dynamic creep, indirect tensile strength, and resilient modulus.
Thus, by considering the engineering, environmental, and economic factors, further research should be conducted on the use of agricultural waste as coarse aggregate replacement in asphalt concrete.
Hence, asphalt concrete incorporating CS insignificantly affects the performance of a mixture because the void is too high.
The application of CS as the coarse portion of aggregates in asphalt conrete mixtures leads to lower rut depth because of the superior interlocking properties and aggregate-binder adhesion exhibited by CS aggregates; these properties increase the ability of asphalt mixes.
Kalurkar: IOSR Journal of Mechanical and Civil Engineering (2014), p. 61-64
Thus, by considering the engineering, environmental, and economic factors, further research should be conducted on the use of agricultural waste as coarse aggregate replacement in asphalt concrete.
Hence, asphalt concrete incorporating CS insignificantly affects the performance of a mixture because the void is too high.
The application of CS as the coarse portion of aggregates in asphalt conrete mixtures leads to lower rut depth because of the superior interlocking properties and aggregate-binder adhesion exhibited by CS aggregates; these properties increase the ability of asphalt mixes.
Kalurkar: IOSR Journal of Mechanical and Civil Engineering (2014), p. 61-64
Online since: November 2022
Authors: Ali Shokuhfar, Keyvan Homayouni, Zeinab Heidary, Fatemeh Rezaei, Soroush Javadipour
Additionally, physical properties of the Al2O3-ZnO hybrid nanofluid, such as thermal and electrical conductivity are investigated.
The most significant factor impacting the thermal conductivity and other thermophysical properties of nanofluids is the solid volume fraction of nanoparticles, which is brought on by an increase in particle number at higher concentrations [16].
Addali, A Review on Nanofluids: Fabrication, Stability, and Thermophysical Properties, J.
Geng, Investigation and prediction of optical properties of alumina nanofluids with different aggregation properties, Int.
Metselaar, A review of nanofluid stability properties and characterization in stationary conditions, Int.
The most significant factor impacting the thermal conductivity and other thermophysical properties of nanofluids is the solid volume fraction of nanoparticles, which is brought on by an increase in particle number at higher concentrations [16].
Addali, A Review on Nanofluids: Fabrication, Stability, and Thermophysical Properties, J.
Geng, Investigation and prediction of optical properties of alumina nanofluids with different aggregation properties, Int.
Metselaar, A review of nanofluid stability properties and characterization in stationary conditions, Int.
Online since: April 2015
Authors: Li Li Zhang, Hui Yan, Dan Song, Ai Bin Ma, Jing Hua Jiang, Guang Hui Guo
Introduction
As the lightest structural metallic material of engineering, Mg and its alloys were widely used in aeronautical engineering,automobile industry and 3C product fields due to their outstanding physical and mechanical properties, such as low densities, high strength, good machinability and potentially high strength/weight ratios, etc.[1-3].
Thus, the significant issue to maintain the mechanical integrity of magnesium-based implants at the period of tissue healing is to reduce the biodegradation rate.
Conclusions The anti-corrosion behaviors of biomedical coating on Mg alloys produced by hydrothermal method were influenced by many factors.The increasing of the hydrothermal time and temperature will lead to the thicker coating, which will enhance the efficiency of preventing the penetration of aggressive medium.
Magnesium: Properties—applications—potential.
Layered double hydroxide films: synthesis, properties and applications[J].
Thus, the significant issue to maintain the mechanical integrity of magnesium-based implants at the period of tissue healing is to reduce the biodegradation rate.
Conclusions The anti-corrosion behaviors of biomedical coating on Mg alloys produced by hydrothermal method were influenced by many factors.The increasing of the hydrothermal time and temperature will lead to the thicker coating, which will enhance the efficiency of preventing the penetration of aggressive medium.
Magnesium: Properties—applications—potential.
Layered double hydroxide films: synthesis, properties and applications[J].
Online since: October 2015
Authors: Gunther Reinhart, Max Lutter-Günther, Christian Seidel, Tobias Kamps
As of today, AM applications affect industries such as aerospace, medical, automotive, jewellery and tooling.
Metal parts produced by powder bed fusion show good mechanical properties and high geometric complexity can be realised.
Furthermore, post processing technologies can be applied in order to improve the component’s surface, dimensional accuracy and material properties [9].
This list summarizes the influencing factors on AM implementation.
Leveraging mobilisation and fragmentation of production due to the lack of required tools and the limited amount of production factors, decentralised production can be realised.
Metal parts produced by powder bed fusion show good mechanical properties and high geometric complexity can be realised.
Furthermore, post processing technologies can be applied in order to improve the component’s surface, dimensional accuracy and material properties [9].
This list summarizes the influencing factors on AM implementation.
Leveraging mobilisation and fragmentation of production due to the lack of required tools and the limited amount of production factors, decentralised production can be realised.
Online since: January 2009
Authors: B.K. Singh, Ho Jin Ryu, Iwan V. Kityk, K.S. Bartwal
They exhibit
unique electrical properties, efficient heat conductivity and excellent mechanical strength.
Due to their outstanding physical properties carbon nanotubes are one of nanotech's most promising molecular building blocks.
It is well known that the excellent chemical and physical properties of SWNTs strongly depend on their structural details and therefore on the synthesis process they are grown.
Dreesselhaus, Physical Properties of Carbon Nanotubes, (1998) Imperial College press, London. 10.
Avouris (Eds.), Carbon Nanotubes: Synthesis, Structure, Properties, and Applications, Springer-Verlag, Berlin, (2001) p. 33. 19.
Due to their outstanding physical properties carbon nanotubes are one of nanotech's most promising molecular building blocks.
It is well known that the excellent chemical and physical properties of SWNTs strongly depend on their structural details and therefore on the synthesis process they are grown.
Dreesselhaus, Physical Properties of Carbon Nanotubes, (1998) Imperial College press, London. 10.
Avouris (Eds.), Carbon Nanotubes: Synthesis, Structure, Properties, and Applications, Springer-Verlag, Berlin, (2001) p. 33. 19.
Online since: December 2023
Authors: Abd Elouahab Noua, Khedidja Chehhat, Dogan Kaya, Imed Eddine Zerrouk, Ahmet Ekicibil, Dhikra Bouras, Lazhar Foughali, Abla Mecif
Zinc oxide (ZnO) is a well-known photocatalyst due to its good optical and morphological properties, and it is non-toxicity.
The photocatalytic behavior of thin films is influenced by various factors, such as the preparation method [23] or by the synthesis conditions of the films, such as annealing temperatures, withdrawal speed, doping nature, and film properties such as thickness, structure, morphology, crystallographic plane orientation, and optical bandgap [16, 24-29].
The substrate importance type has been experimentally demonstrated, as it has a significant effect on all the properties, structural, morphological, and optical properties, and thus on the photocatalytic properties [33, 34].
Chemistry, Effect of glass substrate and deposition technique on the properties of sol gel TiO2 thin films, J.
Sorrell, Properties and performance of photocatalytic CeO2, TiO2, and CeO2-TiO2 layered thin films, Ceram.
The photocatalytic behavior of thin films is influenced by various factors, such as the preparation method [23] or by the synthesis conditions of the films, such as annealing temperatures, withdrawal speed, doping nature, and film properties such as thickness, structure, morphology, crystallographic plane orientation, and optical bandgap [16, 24-29].
The substrate importance type has been experimentally demonstrated, as it has a significant effect on all the properties, structural, morphological, and optical properties, and thus on the photocatalytic properties [33, 34].
Chemistry, Effect of glass substrate and deposition technique on the properties of sol gel TiO2 thin films, J.
Sorrell, Properties and performance of photocatalytic CeO2, TiO2, and CeO2-TiO2 layered thin films, Ceram.
Online since: October 2008
Authors: Suman K. Mishra, Lokesh C. Pathak
The combustion wave depends on
thermophysical properties and heat transfer criteria of product.
Also grainboundary phases and grain size influences the properties to a large extent.
Excellent properties make these borides ideal candidates for high temperature applications requiring wear, oxidation and corrosion resistance.
The sintered pellets were having high electrical conductivity and had good mechanical properties.
Though high densities were achieved by sintering in a furnace, the large grain-growth degraded the mechanical properties of the composite.
Also grainboundary phases and grain size influences the properties to a large extent.
Excellent properties make these borides ideal candidates for high temperature applications requiring wear, oxidation and corrosion resistance.
The sintered pellets were having high electrical conductivity and had good mechanical properties.
Though high densities were achieved by sintering in a furnace, the large grain-growth degraded the mechanical properties of the composite.