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Online since: October 2014
Authors: A.A. Ruktuev, V.V. Samoylenko, M.G. Golkovski
The results of structural investigations, mechanical properties and corrosion resistance testing of materials produced by the electron beam cladding of tantalum and niobium powders on cp-titanium substrates are presented in this paper.
Nb decreased the corrosion rate by factor of 96.
The aim of the research was to study structure and properties of “Ti-Ta-Nb” coatings cladded using the electron beam treatment.
Estimation of mechanical properties of cladded layers were carried out by means of microhardness testing.
These films have the better protective properties in relation to TiO2 ordinary forming on titanium surfaces.
Online since: December 2024
Authors: Roman Purdenko, Roman Maiboroda, Yurii Otrosh, Nina Rashkevich
Its size, shape and material are chosen depending on a number of factors, including the characteristics of the soil and the load of the building [12].
These factors can be taken into account in our research.
In [18], a structural model was developed that allows for a comprehensive assessment of the factors affecting the depth of embedment.
Particular attention should be paid to soil properties when designing the soil-foundation-structure system.
Despite the fact that all calculation software systems are based on the finite element method, the regulatory framework has virtually no recommendations for the development of the numerical model of soils and buildings, and there are no uniform recommendations for the selection of types of finite elements that can ensure the required accuracy of the numerical model calculation, taking into account all the main factors affecting the strength and stability of the building [32], and, accordingly, of the soils.
Online since: October 2014
Authors: Yan Yin, Jin Guo Ta, Rui Hua Zhang, Zhan Chong Wang
In this article, the weld bead morphology, arc images, microstructures and mechanical properties of laser aided activating TIG welding joint were analyzed.
LA-TIG weld exhibits better mechanical properties than the conventional TIG welding.
The arc constriction and the reversed Maranon convection are considered to be two main factors for increasing the penetration of an A-TIG welding pool [9].
(a) (b) (c) (d) Fig. 4 Optical microstructure of the weld joint Mechanical Properties of the Weld Joint Table 4 presents the tension test results for mechanical properties of the weld joint formed by TIG welding and LA-TIG welding respectively.
(3) LA-TIG weld exhibits better mechanical properties (including strength, ductility, and hardness) than that formed by the conventional TIG welding
Online since: January 2010
Authors: Serge Tcherniaeff, Franck Girot, Ivan Iordanoff
The challenge is to relate the main and relevant parameters of the process (geometry of the tool, topologies of the assembly, others parameters such as axial force, torque, tool positioning, the nature of materials to be assembled,..) to the mechanical properties expected for that weld The study proposes an analogical simulation in a modeling clay (plasticine) workpieces environment.
Thus we will be able to deduce the mechanical characteristics of the weld"s behaviour
These zones are the stir zone, the thermo-mechanically affected zone (TMAZ) and the heated affected zone (HAZ)
However to facilitate the observation of mechanical phenomena on the physical simulation during the weld, a geometrical scale factor has to be chosen.
The final result will be the creation of a model of FSW for different materials with different kind of joining 5_References [1] NANDAN (R)-DEBROY (T)-BHADESHIA (H K D H) - Recent advances in Friction Stir Welding-Process,Weldment, Structure and properties - Progress in Materials Science 53 PP 980-1023 (2008) [2] BASTIER (A), Modélisation du soudage d'alliages d'aluminium par friction et malaxage, Thèse de doctorat de l'Ecole Polytechnique, décembre (2006) [3] GLUKHMAN (A.A.). - Introduction to the theory of similarity.
Online since: January 2022
Authors: Zhi Guo Gao
The metallurgical factors avoid stray grain formation and improve crack-resistant microstructure development.
Effect of solidification parameters on the microstructures and properties of CMSX-10.
Mechanical properties of Inconel 718 welds performed by gas tungsten arc welding.
Effect of laser power and welding speed on microstructure and mechanical properties of fiber laser-welded Inconel 617 thin sheet.
Influence of shielding gas composition on structure and mechanical properties of wire and arc additive manufactured Inconel 625.
Online since: January 2015
Authors: Vera Murgul, Nikolay Vatin, Radmila Sinđić Grebović, Željka Radovanović, Sretena Dimovska, Nina Serdar
Clay brick blocks, which have very different mechanical properties, are commonly used as masonry units for building masonry walls.
Data on the mechanical properties of masonry walls from the materials used in Montenegro are scarce.
According to previous experimental studies, the most significant contributions to the mechanical properties of the masonry wall are given by mechanical properties of masonry units.
The mechanical properties of unreinforced masonry (2000) Građevinar 52, pp. 67-78
Testing of mechanical properties of masonry walls of brick block (2014) International scientific conference GNP, Zabljak, pp. 315-322
Online since: December 2013
Authors: Raed Hashaikeh, Lin Li, Hassan A. Arafat
The shape factors calculated by LEP, contact angle, and bubble point pore size are also shown in Figure 8.
Yang, Mechanical properties and biocompatibility of electrospun polylactide/poly (vinylidene fluoride) mats.
[28] Ran, X., et al., Thermal and mechanical properties of blends of polylactide and poly (ethylene glycol‐co‐propylene glycol): Influence of annealing.
Lim, Effects of annealing on the structural and mechanical properties of electrospun polymeric nanofibres.
Pai, Morphology and mechanical properties of electrospun polymeric fibers and their nonwoven fabrics, 2011, Massachusetts Institute of Technology
Online since: April 2015
Authors: Chia Chi Lo, Chien Wei Liu, Ching Sung Wang, Po Ching Wu, Chiang Lu Fang, Tiew Guan Kwok
Furthermore, bone cement characteristics can be affected by material and non-material factors.
Non-material factors include: (1) Stir environment, temperature, humidity and container composition.
External environmental temperature during testing will influence mechanical properties of bone cement, thus conducting tests under different temperature environments will obtain different experimental values.
When combining and mixing the bone cement powder with the hardening reagent, air goes into the mixture and forms cavities, resulting in structural changes and thus affects the mechanical properties of the bone cement. (3) Others, such as the influences of additives.
Furthermore, between the four criteria in the regulation, the maximal exothermic temperature is the most significant affecting factor responsible for surgery failure.
Online since: March 2023
Authors: Roziah Zailan, Khairul Anuar Shahid, Norhaiza Ghazali, Mohd Faizal Md Jaafar, Fadzil Mat Yahaya, Khairunisa Muthusamy
The use of NDT methods is crucial in estimating the properties of concrete.
Researchers discovered that concrete made from fly ash improves the properties of concrete due to pozzolanic activity, resulting in the sealing of small cracks in the concrete being healed as well as better results in terms of self-healing properties [9,11,15].
Factors influencing ultrasonic pulse velocity in concrete, Ibracon Struc.
In Measuring, monitoring and modeling concrete properties, Springer. (2006) 273-284, Dordrecht
Li, Factors affecting crack repairing capacity if bacteria-based self-healing concrete, Constr.
Online since: June 2012
Authors: S.M. Darwish, Basem M.A. Abdo, A.M. El-Tamimi
However, these properties also make them difficult to machine into a precise size and shape.
The materials properties are shown in Table 1.
The Range (“Delta”) shown in Table 4, represents the difference between the maximum and minimum values of S/N ratio at each level, describes the significance of each factor affecting the responses.
The “Delta” value is higher for most significant factors and its value decreases for less significant factors.
It means that all the factors affecting the surface roughness have been considered in the predictive model.
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