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Online since: April 2014
Authors: Di Wu, Xiao Chun Fan, Hu Chen
Basalt fiber reinforced concrete has excellent basic mechanical properties.
Current researches of basalt fiber reinforced concrete focus more on its basic mechanical properties.
Table 1 Physical and mechanical properties of basalt fiber Filament Diameter /μm Length /mm Density /kg·m-3 Tensile strength /MPa Tensile modulus /GPa Ratio of ultimate elongation /% 15 12 2650 4150~4800 93~110 3.1 Mix Proportions.
The main factors affecting the freeze-thaw resistance of concrete had two aspects.
One aspect was some external factors, such as temperature, humidity and freeze-thaw cycles times.
Online since: June 2020
Authors: Vladimír Hrbek, Václav Nežerka, Petr Bily, Josef Fladr
The mechanical properties of a cementitious composite are strongly affected by interfacial transition zone (ITZ) between the matrix and the aggregates, mainly by its strength and thickness.
For each mixture, macroscopic mechanical properties (mainly compressive strength, elastic modulus and total porosity of concrete) were measured.
Rivard: Influence of supplementary cementitious materials on engineering properties of high strength concrete.
Hrbek: The effect of cement replacement and homogenization procedure on mechanical properties of high-performance concrete Magazine of Civil Engineering 8/84 (2018)
Schutter: Microstructural characterization of ITZ in blended cement concretes and its relation to transport properties.
Online since: August 2021
Authors: Svetlana E. Krylova, Ivan A. Kurnoskin, Alexey Yu. Plesovskikh
Plesovskikh1,c 1Orenburg State University, Orenburg, Russia aivan.kurnosckin@yandex.ru, bkrilova27@yandex.ru, cjokkerpokker56@mail.ru Keywords: laser thermal treatment, light-absorbing coating, absorption coefficient, tribomechanical properties, thermal hardening.
To annihilate this factor, a light-absorbing coating was developed and applied to the surface of the element before laser hardening.
The metal substrate of 5CrNiM steel preserves the required mechanical properties (σv = 63.5 kgf/mm2; KCU = 6.4 kgf/mm2), providing for rigidity and durability of the product under static loading and tearing.
Skhirtladze, Processes of mechanical and physical-chemical processing of materials: University Class Book, TNT, Moscow, 2012
Proskurin, Hardening and Surface Treatment in Mechanical Engineering: University Students Book, OSU, Orenburg, 2004
Online since: February 2015
Authors: Rudolf Martonka, Vítězslav Fliegel
Experimental testing of its properties investigates the correlation between its characteristic and comfort.
Main factors that affect the quality of sitting are: the quality of a seat squab and a back-rest, the presence of a static and a dynamic load.
These are factors that are harmful to human organism [1].
Evidently, stabilization of mechanical properties of PU foam under loading happens.
Martonka, Measuring properties of car seats and its innovation, Doctoral thesis, Technical University of Liberec, Liberec, 2009
Online since: June 2020
Authors: Yasser Kamal Hefni
They have been demonstrated to improve the physicochemical and mechanical properties of polymers.
The previous deterioration aspects resulted from the physicochemical and mechanical deterioration factors, which related to the open environment in which the statue is displayed.
They have been demonstrated to improve the physicochemical and mechanical properties of polymers.
Mechanical properties To assess the consolidating effect of the used nanocomposites, the treated and untreated quartzite samples were undergone to a compressive strength test.
[16] El-Gohary, M., Effective Roles of some deterioration agents affecting Edfu royal birth house "Mammisi", International Journal of Conservation Science, 6 (3), (2015), 349-368
Online since: July 2015
Authors: Junaidah Jai, Istikamah Subuki, Rafeqah Raslan, Fitrah Rabani Abdul Aziz
Essential oils (EOs) widely known to possess various beneficial properties which are vital in numerous fields such as fragrance, flavour and medical.
Although microencapsulation technology can trap oily components stably to fibers, a lots of affecting factor needs to be considered in order to have high performance microcapsules which can serve specific application.
This kind of textile are being developed with the aim of providing new properties of fabrics with added value.
Hence, current study focuses on the investigation of mosquito repellency properties of EOs that are more safe and effective [28].
Pei: Preparation and Properties of Olive Oil Microcapsules, Journal of Fiber Bioengineering & Informatics, Vol.5(1) (2012), p. 67-76 [28] R.
Online since: May 2012
Authors: Ming Li, Yong Liu, Yong Fang Liu, Jing Feng Du, Zhe Zhe Sun
Outer strengthening ring type has large rigidity and is convenient in construction, but it affects the service function of building.
In the same year, Y.M.Alostaz et al. analyzed how the different factors affect the node behavior with finite element software named Abacus, including the ratio of tube radius to thickness, axial load ratio, beam moment-shear ratio, which lay theoretical foundation for experimental research.
In 2001, D.X.Zhang et al. carried out quasi static test with 4 normally designed CFST SBCJS in order to study their dynamic properties and Shear bearing capacity [13].
Therefore, the fowling problem is necessary to be further studied: (1) More work should be done on analyzing how the different factors affect the mechanical performance of CFST SBCJS under low reversed cyclic loading through finite element simulation, and affection of the coupling action of different main factors should also be studied
And further study is also should be done on the mechanical properties of these joints to establish convenient design method.
Online since: April 2018
Authors: Takeshi Shiono, Jiraprabha Khajornboon, Kouichiro Washijima
Samples were fired from 1400-1500°C for 5 h and characterized for physical and mechanical properties.
In order to improve the mechanical properties as KIC and γeff, in the present study, monolithic refractory with in-situ CA6 was prepared and the effect of CA6 on the mechanical properties was investigated.
Mechanical properties.
Generally, there are many parameters that affect to mechanical properties of monolithic refractory.
Mechanical properties.
Online since: May 2016
Authors: Chuan Zhen Huang, Han Lian Liu, Jun Wang, Hong Tao Zhu, Bin Zou, Xian Feng Sui
China Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, P.
In case-based reasoning system, the weight distribution of cases properties must be considered when the similarity needs to be calculated between a new machining case and cases in the case-base.
The weight determination of cases properties plays an important role in the process of case retrieving, case revising and case retaining.
The fuzzy comprehensive evaluation is one of the widely used tools under the condition that the object is affected by various uncertain factors[7].The comprehensive weights of different cases properties can be obtained by using two-level fuzzy comprehensive evaluation after analyzing factors affecting high-speed machining.
It’s used to save the information such as the material of the workpiece, the material components and parameters associated with workpiece material properties such as hardness and elastic modulus.
Online since: September 2018
Authors: Vladimir I. Andreev, I.I. Frolova
The development of methods for calculation of underground structures that would fully consider the conditions of their creation and operation as well as actual properties of materials is one of crucial areas in structural mechanics.
The action of the temperature also changes physical and mechanical properties of the material (modulus of elasticity, thermal conductivity coefficient, etc.).
Further calculations take into account the impact of such factors as the rock fracturing and the temperature impact on the primary mechanical characteristic – modulus of elasticity – with the following function [2 – 5]: (1) Both problems were solved for a fixed time point t0, which is why such an elastic curve as E(r) as well as coefficients l(r), m(r), and k(r) related to it depend only on one coordinate - radius r.
Meschyan, Grounds mechanical properties and laboratory methods of their identification, Nedra, Moscow, 1974
Agakhanov, Choosing the function of mechanical properties of grounds and rock formations due to their heterogeneity, E3S Web of Conferences. 33 (2018) 194-199
Showing 7531 to 7540 of 26166 items