Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: February 2022
Authors: Sergey V. Orlov, Vasily E. Kostin, Sergey A. Mankovsky, Natalia A Sokolova, Vladimir G. Kochetkov
Such materials with low adhesive properties include fluoroplastics, which are the most chemically resistant of all currently known plastics.
It is also important to take into account, when choosing the place of installation and the location of the stand on it, such factors as the direction of currents, surge winds, surf, etc. [22].
The samples on the stand were installed in such a way as to ensure the same test conditions, taking into account the influence of external factors affecting fouling (insolation, waves, currents, etc.).
The tested PTFE coating and the WG-Weleforce LS control paint provide reliable protection against corrosion, but the PTFE coating has significantly better antifouling properties. 5.
The effectiveness of the anti-fouling properties of the fluoroplastic coating in the full immersion zone is 4.7 times higher than that of the WG-Weleforce LS paintwork. 6.
It is also important to take into account, when choosing the place of installation and the location of the stand on it, such factors as the direction of currents, surge winds, surf, etc. [22].
The samples on the stand were installed in such a way as to ensure the same test conditions, taking into account the influence of external factors affecting fouling (insolation, waves, currents, etc.).
The tested PTFE coating and the WG-Weleforce LS control paint provide reliable protection against corrosion, but the PTFE coating has significantly better antifouling properties. 5.
The effectiveness of the anti-fouling properties of the fluoroplastic coating in the full immersion zone is 4.7 times higher than that of the WG-Weleforce LS paintwork. 6.
Online since: September 2017
Authors: Murat Baydogan, Yakup Yürektürk
Owing to these unique properties, ADIs have been extensively preferred in many structural applications in automotive and agricultural industries [1,2].
Silicon is one of the most important elements in ADIs because its content affects the microstructure and the mechanical properties as well as it can prevent the formation of detrimental carbides in the ausferritic microstructures [3].
ADI has a dual phase microstructure which consist of ferrite (α) and retained austenite (γ) [4,5], and it is generally accepted that volume fraction of retained austenite is the most significant parameter affecting mechanical properties [6,7].
Kocha, Properties and structure of high-silicone austempered ductile iron, Arch.
Rajnović, Microstructure and mechanical properties of CuNiMo austempered ductile iron, J.
Silicon is one of the most important elements in ADIs because its content affects the microstructure and the mechanical properties as well as it can prevent the formation of detrimental carbides in the ausferritic microstructures [3].
ADI has a dual phase microstructure which consist of ferrite (α) and retained austenite (γ) [4,5], and it is generally accepted that volume fraction of retained austenite is the most significant parameter affecting mechanical properties [6,7].
Kocha, Properties and structure of high-silicone austempered ductile iron, Arch.
Rajnović, Microstructure and mechanical properties of CuNiMo austempered ductile iron, J.
Online since: August 2012
Authors: Guerold Sergueevitch Bobrovinitchii, Ana Lúcia Diegues Skury, Marcia G. de Azevedo, Sérgio Neves Monteiro
The present work investigates the properties of sintered ZrO2 nanopowder, stabilized with Yb2O3, as a tough enough pure ceramic with high thermal resistance for tooling compacts.
The final sintered material displays a well consolidated microstructure with properties that are adequate for tool bits application.
The remarkable properties of the ZrO2 result from its allotropic transformations.
Mechanical properties, both compression and flexural tests, were performed in a Instron machine.
· The density of the sintered compacts is relatively high and not affected by the La2O3 addition
The final sintered material displays a well consolidated microstructure with properties that are adequate for tool bits application.
The remarkable properties of the ZrO2 result from its allotropic transformations.
Mechanical properties, both compression and flexural tests, were performed in a Instron machine.
· The density of the sintered compacts is relatively high and not affected by the La2O3 addition
Online since: August 2013
Authors: Hamid Nikraz, Ainalem Nega, Behzad Ghadimi, Colin Leek
Unbound materials display stress dependent properties.
Unbound materials display stress dependent properties.
Other material properties may also affect the fatigue life such as PMB’s, source of bitumen, aggregate/bitumen affinity etc.
The modeled pavement system has the same geometrical and mechanical properties in both programs.
Geometrical and Mechanical Properties of Pavement Model.
Unbound materials display stress dependent properties.
Other material properties may also affect the fatigue life such as PMB’s, source of bitumen, aggregate/bitumen affinity etc.
The modeled pavement system has the same geometrical and mechanical properties in both programs.
Geometrical and Mechanical Properties of Pavement Model.
Online since: January 2018
Authors: Magdaléna Doleželová, Alena Vimmrová, Jitka Krejsová
Introduction
Surface roughness is an important property of aggregate and most of mortar properties are influenced by it.
The grain surface roughness and grain shape have impact on mortar properties.
Properties of the mortars.
SRa of gypsum plaster is primarily affected by the porosity.
Lin, Influence of aggregate surface roughness on mechanical properties of interface and concrete, Construction and Building Materials 65, 338-349 (2014)
The grain surface roughness and grain shape have impact on mortar properties.
Properties of the mortars.
SRa of gypsum plaster is primarily affected by the porosity.
Lin, Influence of aggregate surface roughness on mechanical properties of interface and concrete, Construction and Building Materials 65, 338-349 (2014)
Online since: June 2011
Authors: Luigi Tricarico, Marco Brandizzi, Annunziata Anna Satriano
In the present research microstructure and mechanical properties were studied using optical microscopy, morphological analysis of the cross-sections and mechanical tests (hardness).
The system consisted of a tilted nozzle for plasma suppression and a correctly dimensioned shielding trailer to protect the weld bead and heat affected region whilst hot, that avoided the use of any kind of “skirt”.
Also the undercut at the root are wider with the increase in the distance between laser and MIG, however this factor is the index of an insufficient energy in the root zone.
The realized experimental plan is the two factors (laser beam power and peak current of the arc pulse) and three levels (then 32 tests) ones.
The weld obtained using hybrid welding process underlines values of hardness slightly lower at the centre of the weld, in comparison to those of the heat affected zone.
The system consisted of a tilted nozzle for plasma suppression and a correctly dimensioned shielding trailer to protect the weld bead and heat affected region whilst hot, that avoided the use of any kind of “skirt”.
Also the undercut at the root are wider with the increase in the distance between laser and MIG, however this factor is the index of an insufficient energy in the root zone.
The realized experimental plan is the two factors (laser beam power and peak current of the arc pulse) and three levels (then 32 tests) ones.
The weld obtained using hybrid welding process underlines values of hardness slightly lower at the centre of the weld, in comparison to those of the heat affected zone.
Online since: March 2020
Authors: Haslan Fadli Ahmad Marzuki, Mariatti Jaafar, Engku Ahmadhilmi Engku Ubaidillah, Sivakumar A/l Sivarasa, Mohd Syamsul
Composite laminate design is an important procedure in defining the mechanical properties of laminated composite structure to be used in multi-directional service loading application.
Illustration on sampling for flexural testing Results and Discussions Flexural Properties Flexural properties are consisting of flexural modulus, Eflex, maximum flexural stress, σflex and flexural strain, εflex.
Experimental values are differ than simulated values due to few factors which includes experimental fiber volume and weight fraction and voids, as resulted from types of fiber textile forms and fabrication parameters [13, 14].
Moreover the presence of voids in laminates affects the mechanical properties of the experimental samples [13-16].
Vinogradov, “The effect of matrix cracking on mechanical properties in FRP laminates,” Mech.
Illustration on sampling for flexural testing Results and Discussions Flexural Properties Flexural properties are consisting of flexural modulus, Eflex, maximum flexural stress, σflex and flexural strain, εflex.
Experimental values are differ than simulated values due to few factors which includes experimental fiber volume and weight fraction and voids, as resulted from types of fiber textile forms and fabrication parameters [13, 14].
Moreover the presence of voids in laminates affects the mechanical properties of the experimental samples [13-16].
Vinogradov, “The effect of matrix cracking on mechanical properties in FRP laminates,” Mech.
Online since: July 2015
Authors: Md Abdul Maleque, Yeakub Ali Mohammad, Adebisi Adetayo Abdulmumin
Recent studies [1-4] have shown that metal matrix composite possesses better properties when compared to monolithic materials and its properties can be tailored according to the desired engineering application.
The particle size, volume/weight fraction and matrix alloy properties have a major influence on the wear characteristics of composites.
However, Purohit and Sagar [5] observed that reinforcement of more than 20 wt% have no significant improvement on the properties of the composites.
Results and Discussion Wear characteristics of MPS SiC aluminium matrix composite: The pin on disc tribo-system is widely used to study the wear properties of materials.
(a) Load: 24.5N Effect of variable speed and load on wear rate: The influence of varying speed and applied load are both considered as a major factor affecting wear rate.
The particle size, volume/weight fraction and matrix alloy properties have a major influence on the wear characteristics of composites.
However, Purohit and Sagar [5] observed that reinforcement of more than 20 wt% have no significant improvement on the properties of the composites.
Results and Discussion Wear characteristics of MPS SiC aluminium matrix composite: The pin on disc tribo-system is widely used to study the wear properties of materials.
(a) Load: 24.5N Effect of variable speed and load on wear rate: The influence of varying speed and applied load are both considered as a major factor affecting wear rate.
Online since: June 2021
Authors: Jun Jie Yang, Ya Lei Wu, Si Chen Li, Man Wang
Alkali activator activity has significant effects on the mechanical properties, microstructure, and durability of solidified sandy soil[5],[16]-[17][18].
Materials and Methods Soil properties.
Influence of Pozzolanic Material Reactivity on Mechanical Properties of Solidified Soil Stress-strain relationship of solidified soil.
The pozzolanic reaction activity of FA is lower than that of GBFS, resulting in the slower alkali-activation process, indicating that the content of silico-aluminum in the pozzolanic material is not a decisive factor in the mechanical properties of the solidified soil.
Haddad, Mechanical and Durability Properties of Poorly Graded Sandy Soil Stabilized with Activated Slag, J.
Materials and Methods Soil properties.
Influence of Pozzolanic Material Reactivity on Mechanical Properties of Solidified Soil Stress-strain relationship of solidified soil.
The pozzolanic reaction activity of FA is lower than that of GBFS, resulting in the slower alkali-activation process, indicating that the content of silico-aluminum in the pozzolanic material is not a decisive factor in the mechanical properties of the solidified soil.
Haddad, Mechanical and Durability Properties of Poorly Graded Sandy Soil Stabilized with Activated Slag, J.
Online since: February 2012
Authors: Qing Li
Coal and gas outburst is ground stress, gas, coal of the physical and mechanical properties of three aspects such as the result of the combined action of.
Among them were the dominant factors of in-situ stress is taking place of coal and gas outburst in the necessary condition.
Large area ground stress, gas pressure also big; In tectonic stress that the effect of the physical and mechanical properties of coal has obvious change.
According to the influence of coal and gas outburst in the analysis of the factors and the forecasting coal seam outburst dangerous the possibility of access data, on the basis of the three coal seam coal mine qidong well for coal and gas outburst prediction area consider factors include: the now stress field distribution in layer status, geological power division results classification, gas content and its change, thickness of coal seam and the change, magmatic rocks distribution, coal change six factors.
In addition to the fall in the two regions outside the area, the occurrence of gas and the gas pressure may be smaller factors, this area index value of 10.
Among them were the dominant factors of in-situ stress is taking place of coal and gas outburst in the necessary condition.
Large area ground stress, gas pressure also big; In tectonic stress that the effect of the physical and mechanical properties of coal has obvious change.
According to the influence of coal and gas outburst in the analysis of the factors and the forecasting coal seam outburst dangerous the possibility of access data, on the basis of the three coal seam coal mine qidong well for coal and gas outburst prediction area consider factors include: the now stress field distribution in layer status, geological power division results classification, gas content and its change, thickness of coal seam and the change, magmatic rocks distribution, coal change six factors.
In addition to the fall in the two regions outside the area, the occurrence of gas and the gas pressure may be smaller factors, this area index value of 10.