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Online since: July 2015
Authors: Erniati Erniati, Victor Sampebulu, M.W. Tjaronge, Rudy Djamaluddin
Knowledge about the microstructure and properties of the individual components of concrete have a relationship that is useful for controlling the behavior of concrete.
Sea water or water quality is not a factor affecting corrosion in concrete but corrosion is a factor that affects the permeability of concrete and the lack concrete cover [1].
Thus the sea water does not affect the formation of CSH.
Mechanical, Microstructure and Rheological Characteristics of High Performance Self-Compacting Cement Pastes and Concrete Containing Ground Clay Bricks.
Concrete: Microstructure, Properties and Materials, 3rd Ed, McGraw-hill_Professional
Online since: December 2024
Authors: Fatwa Khoirrun Nadhor, Yeshaya Armani Ramadhan, Muhammad Awwaluddin, Farid Triawan, Sri Hastuty, Faisal Mahmuddin
Among these materials, brass, primarily composed of copper and zinc (CuZn), stands out for its advantageous properties.
This degradation leads to diminished mechanical properties thus making it unsafe [3].
Mechanical Properties of Brass.
The presence of chloride ions in the solution has a more significant impact on the corrosion of brass compared to other factors like bending angle and temperature.
In conclusion, increasing the chloride ion concentration has the most potent effect on brass corrosion compared to other factors.
Online since: September 2014
Authors: Marcelo dos Santos Pereira, Érika Aparecida da Silva
Therefore, in order to seek solutions to eliminate or reduce such an effect, it is essential to provide for the occurrence of this effect during the design of microstructure and mechanical properties by correlating the material.
The BH steel is essentially a result of a static strain aging process caused by the diffusion of carbon present in the ink applied in oven at 170° C, which affects the mechanical properties through three mechanisms: the migration of carbon atoms between the possible sets of interstitial sites, this tension-induced migration, the carbon segregation by disagreements, and carbides precipitation.
Tests of mechanical conformation.
Results and discussion With respect to mechanical properties, their values, shown in Table I, were obtained by tensile tests, extracting the specimens in a transverse direction at 45 degrees to the lamination direction of the material.
Mechanical properties of the bake hardening (BH) and interstitial free (IF) steels.
Online since: July 2014
Authors: Fang Shao, Yu Ting Wang, Li Jing Zou, Xian Ming Zhang, Bin Ji
Aero-engine alloys (also as known as superalloys)are known as difficult-to-machine materials, especially at higher cutting speeds, due to their several inherent properties such as low thermal conductivity and their high reactivity with cutting tool materials.
The machinability index can be significantly affected by the propertiesof the material being machined, properties and geometry of the cutting tool, cutting conditions employed and other miscellaneous factors such as rigidity of the machine tool, cutting environment, etc.
The wide spread use of jet engine has increased demand for materials that have excellent high temperature mechanical and chemical properties relative to steels and stainless steel alloys originally employed in jet engine applications.
The mechanical and physical properties of workpiece material and tool material are also presented in Table 2 and Table 3, respectively.
In the machining processes, chip deformation, material constitutive relationships, and tool-chip friction are coupled together and affected each other.
Online since: October 2012
Authors: Adekunle Akanni Adeleke, Jamiu Kolawole Odusote
ANALYSIS OF PROPERTIES OF REINFORCING STEEL BARS: CASE STUDY OFCOLLAPSED BUILDING IN LAGOS, NIGERIA Odusote Jamiu Kolawole1, a Adeleke Adekunle Akanni2, b 1, 2Department of Mechanical Engineering, University of Ilorin, Ilorin, Nigeria.
For all these demands, safeguiding of lives and properties is very pertinent, and thus building collapses during and after construction must be avoided [2].
These and many other unreported cases resulted in lost of many lives and properties worth millions of Naira [8, 11, 12].
In a previous study, reinforcing steel bars from most of the Nigerian steel industries have been found to be suitable for construction work due to their higher mechanical properties than the standards, Alabi and Onyeyi [13].
Lawal, Technological and non-Technological Factors Responsible for the Occurrence of Collapse Building in South-Western Nigeria, JETEAS, 2 (3) (2011) 462-467 [3] A.N.
Online since: September 2013
Authors: Jozef Bárta, Tatiana Vrtochová, Peter Krampoťák
The main factor examined in the process of welding duplex steel is the shielding gas and his effect on weld joint properties.
Duplex stainless steels are valued mainly due for their combination of mechanical properties and excellent corrosion resistance.
Welding speed and focus height (distance of laser beam focus from material surface, positive if over the surface) were selected as factors, while the laser power was kept constant at 4 kW.
It can be assumed that these results could lead to desired mechanical properties as well as corrosion resistance.
WESTIN.: Microstructure and properties of welds in the lean duplex stainless steel LDX 2101.
Online since: March 2014
Authors: Petros Koidis, Maria Bousnaki
The increasing hydration level has an effect on various physical properties of hydrated biomolecules.
The zeta potential of an implanted material is an index of the electric properties of its surface [67].
Surface roughness, surface features characteristics (size, geometry, distribution) and surface energy are three factors that depend on each other, and they all interact and affect the reaction of the surrounding environment.
Unfortunately, it is not possible to alter one surface property without affecting the others and it is also difficult to distinguish which modification is responsible for each tissue reactions.
It can be concluded surface modifications can alter more than one of surface properties and those changes affect the subsequent reactions of the surface with the surrounding environment.
Online since: October 2022
Authors: Balasubramani Veerappan, Sudharshan Vasudevan, B. Karthikeyan
The fibre orientation angles were considered to be control factors.
Desired mechanical properties can be achieved with the help of hybrid composite materials.
Table 1 Mechanical properties of Fibres S.No.
Carbon fibre 1800 230 17.0 0.28 Table 2 Mechanical properties of Matrix S.No.
The various mechanical properties of the composite plate assumed for validating the numerical analysis [21].
Online since: September 2016
Authors: Jean Michel Torrenti
Li [10] proposed that the temporal variable can be explicitly introduced in the mechanical damage evolution law (in terms of damage rate).
Mazzotti [12] proposed to model non-linear creep strain by introducing a stress rate reduction factor as a function of the damage variable in the solidification model [13].
In this model, a scalar mechanical damage variable is associated to the mechanical degradation process of concrete induced by the development of microcracks.
In the case of a severe accident in a nuclear power plant, basic creep will be affected by elevated temperatures and damage.
Vogel, « Concrete: treatment of types and properties in fib Model Code 2010 », Structural Concrete 14 (2013), No. 4 [2] J.M.
Online since: March 2006
Authors: Indera Sadikin, Djoko Suharto
Stress intensity factors at the crack tip are calculated by crack closure technique.
These material properties are contained implicitly in the equation.
There are many uncertainties laid under its important input parameters such as material properties and environmental loading.
[2] Legowo, D: FEM Technique for Calculating Stress Intensity Factors (in Indonesian), Master Thesis, Mech.
Raju: Evaluation of Stress Intensity Factors Using General Finite Element Models, Fatigue and Fracture Mechanics, Vol. 29 (1998)
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