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Online since: September 2022
Authors: Ch. Lakshmi Srinivas, Ravuri Gowtham, Gamineni Suresh, Ragala Siddu, Bandi Ravi Teja, Thambi Babu Remalli, D. Vijay Praveen
H.P.Raturi et al.[3] was experimented on HMMCs of aluminum to study the mechanical properties like abrasive wear rate and hardness.
The mechanical properties of obtained cast composite were compared with the extruded composite.
The density is one of the influenced mechanical properties of wear rate.
The machining factors and their respective levels adopted for the present experimental study were depicted in Table 3.
Mechanical and tribological properties of AA7075–TiC metal matrix composites under heat treated (T6) and cast conditions. 
Online since: April 2014
Authors: Luiz Antonio Coelho Lopes, LUIZ ANTONIO Salles
Economic and political interests affect how deal with its use.
Physicochemical Properties of Asbestos Asbestos is the generic name for a range of six natural minerals, which have simple and low cost mining, rocks found open pit and wide use in industry.
However, should not be disregarded some of the motivating factors in favor of banishment, beyond the fight for good occupational conditions, public health and environmental sustainability, are related to compensation and monopolization in the synthetic fiber market. [6] [7] In countries where there is predominance of one of the groups, it is possible to establish a public policy.
The PP fiber, although has satisfactory properties, presented many variations in the results, because it affects the water absorption and porosity. [10] The research until then carried out only within the university, began to have support from a textile company (Radicifibras).
Given some properties of PVA fiber, a new study was conducted in order to optimize the spinning and stretching steps and to select resins to achieve mechanical strength properties and proper viscosity under fusion conditions.
Online since: March 2015
Authors: Florin Baciu, Claudia Bratosin, Aurelia Rusu-Casandra
Special attention in contemporary dentistry is given to the oral health problems affecting children.
Carries lesions can affect the teeth in the primary dentition if good oral hygiene and nutrition are not established.
The decision to use 2D or 3D for analysis with FEM depends on many factors: complexity of dental structure, biological materials, properties etc [5].
The details of the mechanical properties of all materials included in the FE models are listed in Table 1.
Table 1 Mechanical properties of the materials involved in the FEM calculations Material E [MPa] u Bone 1,2x104 0,33 Tooth 2,686x104 0,33 Composite resin 1,83x104 0,35 Gic Fuji IX 0,4x104 0,3 Von Mises stress, which is always positive in sign and depends on the whole stress field, is widely used in dental literature as an indicator of the stress level in a restored structure [9].
Online since: June 2022
Authors: Sujan Debnath, Dominick Wong, Izman Sudin, Abdul Hamid, A.K. Basak, Alokesh Pramani, Mahmood Anwar
Abstract: Numerous literatures have suggested that the use of natural fiber as filler can improve the mechanical properties of a polymer composite.
Introduction Composite material provides greater mechanical performances, physical properties and chemical properties than of its constituent materials separately and are define as combination of matrix and reinforcement phases on a macroscopic level [1].
From literature, factors such as fiber aspect ratio, dispersion, compatibility between the filler and matrix, and the molecular weight of the polymer matrix are all important aspects in defining the tensile performance of the composites [12], the loading of the filler also plays a crucial factor.
Chetan, “Development and investigation of the mechanical properties of natural fiber reinforced polymer composite,” Materials Today: Proceedings, 2021
Ibrahim, “Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties,” 2016, vol. 11, no. 3, pp. 16, 2016
Online since: April 2016
Authors: Wei Min Sun, Ling He, Wen Sheng Li, Qi Zheng Dong
The effects of some factors on the product preparation were investigated, such as the pH value of precursors; the proportion of citric acid; calcination temperatures, and then the optimal synthetic conditions was obtained.
X-ray diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence spectroscopy were adopted to detect the structure, grain size, morphology and optical properties of the nanofibers, respectively.
The product is easy to form impurity phase during the calcination process, which is not conducive to luminescent properties.
Especially one-dimensional (1D) nanostructures including nanowires, nanofibers, nanotubes, and nanorods have attracted more attention because of their unique properties, such as high luminescence efficiency, superior mechanical toughness, metal insulator transition, and lowered threshold [1].
Some synthesis factors, that is, pH value of precursors, the proportion of citric acid and the calcination temperatures, were discussed and then the optimal synthetic condition was obtained.
Online since: October 2013
Authors: Xiao Hui Zhao, Yu Liu
Ultrasonic surface rolling processing (USRP) is a surface nanocrystallization method developed recently, which can bring metal surface with superior properties.
Majzoobi et al. and Shivpuri Rajiv et al. have simulated the multi-shots case and discussed the influencing factors on peening residual stress [1, 2].
Since the direct loading input on the processing tip is static force and mechanical vibration.
Surface nanocrystallization by surface mechanical attrition treatment and its effect on structure and properties of plasma nitrided AISI 321 stainless steel.
Effects of combined plasma-carburizing and shot-peening on fatigue and wear properties of Ti-6Al-4V alloy.
Online since: October 2014
Authors: Kung Rong Chen, Yi Da Ho, Cheng Liang Huang
From the experiment results, although defects (especially Nb4+) can strongly affect the dielectric properties of the MNO films under various annealing temperatures, tuning the properties by varying annealing temperatures was not a viable solution.
Parameters of the chemical states, as well as electrical and memory properties are summarized in Table I.
Electrical properties and the Nb4+/Nb5+ ratio of the MNO films at various annealing conditions.
Sebastian, Tailoring the microwave dielectric properties of MgNb2O6 and Mg4Nb2O9 ceramics, Int.
Pullar, The synthesis, properties, and applications of columbite niobates (M2+Nb2O6): a critical review, J.
Online since: July 2010
Authors: Soo Wohn Lee, Sung Hun Cho, Gobinda Gyawali, Dong Jin Woo
The properties of the nano composite were investigated using SEM and Vicker's microhardness tester.
The properties of the composite system depend upon many variables, particularly on the nature and content of SiC particles dispersed in the Ni-matrix.
affect the codeposition of Ni-SiC system [11].
Microhardness properties of the composite were measured by using Vickers microhardness tester.
Microhardness of the metal nano composites is mainly affected by three factors; particles hardening, dispersion hardening, and grain refining.
Online since: January 2012
Authors: Romulus Pascu, Radu Alexandru Roşu, Sorin Drăgoi
The bending test showed that all the samples were bent to 180° without cracks which assure good mechanical resistance to deformation.
The values of the main mechanical characteristics of deposited metal are ​​showed in Table 3.
Mechanical characteristics of the filler material Filler material Hardness Mechanical resistance Elongation HB HV CuSi3 80-90 85-95 330-370 Min. 40 The establishing mode to achieve heterogeneous brazed joints of austenitic stainless steel is shown schematically in Figure 3.
Base metal, 100x · In the heat affected zones (HAZ), it is observed austenitic structure with delta ferrite and fine particles of intermetallic compounds of silicon (Figures 13 and 14).
Gould: Dissimilar friction welding of 6061-T6 aluminum and AISI 1018 steel: Properties and microstructural characterization, Mater.
Online since: March 2012
Authors: Xue Yan, Pei Pei Zhang, Zi Dong Yin
The chemical compositions and mechanical properties of titanium alloy (TC18) [2] are shown in Table 1 and Table 2 respectively.
However, other properties have conspired to present difficulties when machining titanium alloy (TC18).
Because titanium alloy (TC18) is a new type of alloy (α+β), a lot of researches work on titanium alloy (TC18) focuses on its microstructure and the properties in China.
The paper explains various factors and parameters involved in milling titanium alloy (TC18) with these three kinds of inserts.
The properties of the machine tool are shown in Table 3.
Showing 11251 to 11260 of 25935 items