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Online since: June 2023
Authors: Faisal Mahmuddin, Farid Triawan, Muslimin Muslimin, Muhammad Iqbal, Sidiq Ruswanto
Austenitic stainless steel has nonmagnetic properties and is resistant to low and high temperatures.
Thus, the properties of this material are very suitable for marine construction, such as ships, buildings, and other construction.
This yield shows that pulse on time and pulse off time are the most influential factors for changes in MRR values [11].
Carbon (C) and Copper (Cu) are factors that add up in this recast layer.
In this Research, Cr23C6 can not be directly seen because of several factors, such as the most influential variables.
Thus, the properties of this material are very suitable for marine construction, such as ships, buildings, and other construction.
This yield shows that pulse on time and pulse off time are the most influential factors for changes in MRR values [11].
Carbon (C) and Copper (Cu) are factors that add up in this recast layer.
In this Research, Cr23C6 can not be directly seen because of several factors, such as the most influential variables.
Online since: March 2019
Authors: Fu Zhen Xuan, Yu Hui Huang, Shan Tung Tu, Shu Xian Lin
As we know, stress corrosion cracking is related to three factors: materials, corrosion environment and load.
In terms of materials, it mainly refers to chemical composition, heat treatment process, mechanical properties and microstructure of the steel and so on [4].
The stress-strain curves are shown in Fig. 4 and the mechanical properties are presented in Table 2.
Fig. 4 Stress-strain curves of rotor steels in air and corrosion condition Table 2 Mechanical properties of rotor steels in air and corrosion condition Materials 25°C,air 180°C,3.5wt.
(2) The SCC sensitivities of CrNiMoV steam turbine rotor steels are affected by microstructure and mechanical properties of materials.
In terms of materials, it mainly refers to chemical composition, heat treatment process, mechanical properties and microstructure of the steel and so on [4].
The stress-strain curves are shown in Fig. 4 and the mechanical properties are presented in Table 2.
Fig. 4 Stress-strain curves of rotor steels in air and corrosion condition Table 2 Mechanical properties of rotor steels in air and corrosion condition Materials 25°C,air 180°C,3.5wt.
(2) The SCC sensitivities of CrNiMoV steam turbine rotor steels are affected by microstructure and mechanical properties of materials.
Online since: September 2016
Authors: A. Pericles Savva, G. Demetris Nicolaides, F. Michael Petrou
It was observed that the HANWA mixtures had improved mechanical and durability properties, a fact that was attributed to IC.
The amount of cement and the water to cement ratio was decided to be similar to the standard practice of the local construction sector; thus the mechanical and durability properties were the factors under investigation.
On the contrary, the exposed IC mixtures exhibited improved behavior in terms of mechanical and durability properties.
Riad, “Effect of moisture and temperature on the mechanical properties of concrete,” Constr.
Jensen, “Mechanical properties of Concrete with SAP Part II: Modulus of Elasticity,” no.
The amount of cement and the water to cement ratio was decided to be similar to the standard practice of the local construction sector; thus the mechanical and durability properties were the factors under investigation.
On the contrary, the exposed IC mixtures exhibited improved behavior in terms of mechanical and durability properties.
Riad, “Effect of moisture and temperature on the mechanical properties of concrete,” Constr.
Jensen, “Mechanical properties of Concrete with SAP Part II: Modulus of Elasticity,” no.
Online since: September 2013
Authors: Shi Bin Tang, Zheng Zhao Liang, Hong Li, Chu Nan Tang
The pre-existing fractures in rock can close, open and growth as it subjected to mechanical or environment loading, which can in turn change the structure of the rock and alter its fluid flow properties.
And then Irwin [2] further introduced the concept of critical energy release rate and the stress intensity factor at the crack tip.
Nakashima [12] studied the effects of hydro- static, dynamic and chemistry damages on stress intensity factor at the tip of cracks.
Therefore, the coupling of seepage flow, water pressure and the mechanical response can be modeled for the rock material as it subjected to hydraulic and mechanical loading.
Furthermore, the permeability of rock is affected by the stress state and the damage evolution which can be modeled by Eq. (5).
And then Irwin [2] further introduced the concept of critical energy release rate and the stress intensity factor at the crack tip.
Nakashima [12] studied the effects of hydro- static, dynamic and chemistry damages on stress intensity factor at the tip of cracks.
Therefore, the coupling of seepage flow, water pressure and the mechanical response can be modeled for the rock material as it subjected to hydraulic and mechanical loading.
Furthermore, the permeability of rock is affected by the stress state and the damage evolution which can be modeled by Eq. (5).
Online since: October 2007
Authors: Antonio Squillace, Pasquale Cavaliere, Gian Luca Rossi, Raffaella Di Sante
Stress intensity factors were
determined based on the TSA data and compared to those calculated using an ABAQUS FE model.
In recent years, a new type of welding, named Friction Stir Welding (FSW), has demonstrated to produce very good sound joints especially in the applications to light alloys welds [5] and present, in particular, superior fatigue properties with respect to joints obtained by traditional techniques (see for example [6]).
Samples are single-edge notched in the welded area to infer stress intensity factors from the experimental data on the stress distribution.
Theoretical stress intensity factors, SIF (left) and comparison of theoretical, corrected and experimental SIF(right).
In Fig.°3 theoretical and experimental stress intensity factors are reported.
In recent years, a new type of welding, named Friction Stir Welding (FSW), has demonstrated to produce very good sound joints especially in the applications to light alloys welds [5] and present, in particular, superior fatigue properties with respect to joints obtained by traditional techniques (see for example [6]).
Samples are single-edge notched in the welded area to infer stress intensity factors from the experimental data on the stress distribution.
Theoretical stress intensity factors, SIF (left) and comparison of theoretical, corrected and experimental SIF(right).
In Fig.°3 theoretical and experimental stress intensity factors are reported.
Online since: October 2007
Authors: Tetsuya Nemoto, Yasumi Ito, Akira Shimamoto, Kazuharu Koide, Akira Inamori, Shyuichi Yanai, Hiroyuki Matsuura
In this research, fatigue crack propagation tests of
magnesium alloy AZ31B and pure titanium TP340C were conducted under conditions of biaxial and
uniaxial loading by using a cruciform specimen in a bi-axial fatigue machine, in order to investigate
the effect of non-singular stress cycling on the fatigue crack growth properties ⊿K-da/dN.
For example, Tanaka et al. and Miller reported that the action of a stress parallel to a crack affects crack progress velocity [3, 4].
As a result, it was suggested that existence of a stress parallel to a crack affects crack progress velocity in AZ31B [5-7].
The mechanical property of AZ31B and TP340C are shown in Table 3, and the dimension and form of a specimen are shown in Fig. 1.
Table 3 Mechanical properties of magnesium alloy and pure titanium.
For example, Tanaka et al. and Miller reported that the action of a stress parallel to a crack affects crack progress velocity [3, 4].
As a result, it was suggested that existence of a stress parallel to a crack affects crack progress velocity in AZ31B [5-7].
The mechanical property of AZ31B and TP340C are shown in Table 3, and the dimension and form of a specimen are shown in Fig. 1.
Table 3 Mechanical properties of magnesium alloy and pure titanium.
Online since: January 2012
Authors: Es Ghadiri Zahrani, Amir Heidari Shahmaleki, D. Zamani, H. Soleimanimehr
The surface quality of machined work piece and its properties are important in estimation of the work piece life under dynamic forces.
Although many factors affect surface roughness of work piece, but cutting speed, feed rate and depth of cut have significant effect.
Definition of factors and interactions among them. 2.
Part 2: Mechanical properties and cutting performances, Surface & Coatings Technology Vol. 201 (2006), p. 1045 [8] J.
Part 2: Mechanical properties and cutting performances, Surface & Coatings Technology Vol. 201 (2006), p. 1045 [10] E.O.
Although many factors affect surface roughness of work piece, but cutting speed, feed rate and depth of cut have significant effect.
Definition of factors and interactions among them. 2.
Part 2: Mechanical properties and cutting performances, Surface & Coatings Technology Vol. 201 (2006), p. 1045 [8] J.
Part 2: Mechanical properties and cutting performances, Surface & Coatings Technology Vol. 201 (2006), p. 1045 [10] E.O.
Online since: February 2012
Authors: Jian Yong Yu, Long Di Cheng, Xiao Jiang, Elena Stojanovska, Qin Wang, Shan Wen Xu
The akund fiber has great potential to be used in the textile industry benefiting from its excellent properties.
Table 9 The moisture regain of the mixtures of each carding plan Properties No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 No.9 No.10 Moisture regain (%) 15.5 15.2 16.2 13.1 11.5 11.3 12.8 12.8 14.8 14.8 Table 9 shows the moisture regain of the mixtures which contain akund and cotton range from 11.3 to 16.2.
Factors that affect the nep content.
The doffer speed affects the output directly.
Factors that affect the SFC(%).
Table 9 The moisture regain of the mixtures of each carding plan Properties No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 No.9 No.10 Moisture regain (%) 15.5 15.2 16.2 13.1 11.5 11.3 12.8 12.8 14.8 14.8 Table 9 shows the moisture regain of the mixtures which contain akund and cotton range from 11.3 to 16.2.
Factors that affect the nep content.
The doffer speed affects the output directly.
Factors that affect the SFC(%).
Online since: September 2016
Authors: Koichi Kobayashi, Keitetsu Rokugo, Yuto Hara, Yuta Kojima
It was found that maximum chloride penetration depth was affected by the cover depth and the deformation applied to the test specimen.
Table 1 Mechanical and geometrical properties of PE fiber Diameter (mm) Length (mm) Density (g/cm3) Tensile strength (GPa) Young’s modulus (GPa) 0.012 12 0.97 2.6 88 Table 2 Mix proportions of SHCC Mixture W/C (%) Unit mass (kg/m3) W C Lpa S SPb Vis.c PE fiber PE-0 30 378 1260 0 395d 28.2 0.89 9.7 PE-25 40 378 945 315 365 d 25.9 0.67 9.7 NM 55 273 496 0 1229 e 0 0 0 a: Limestone powder, b: High range water reducing agent, c: Viscosity-enhancing agent d: Quartz sand, e: River sand The test specimens are shown in Fig. 1.
The chloride penetrated into the specimens through the cracks at a comparatively early stage of the test, so the chloride penetration depth is not affected by the tightness of mortar matrix structure but by the crack properties.
Summarizing the above, it is considered that the factors that affect the maximum depth of chloride penetration are the cover and the deformation.
Rokugo, Mechanical performance of corroded RC member repaired by HPFRCC patching, Construction and Building Materials. 39 (2013) 139-147
Table 1 Mechanical and geometrical properties of PE fiber Diameter (mm) Length (mm) Density (g/cm3) Tensile strength (GPa) Young’s modulus (GPa) 0.012 12 0.97 2.6 88 Table 2 Mix proportions of SHCC Mixture W/C (%) Unit mass (kg/m3) W C Lpa S SPb Vis.c PE fiber PE-0 30 378 1260 0 395d 28.2 0.89 9.7 PE-25 40 378 945 315 365 d 25.9 0.67 9.7 NM 55 273 496 0 1229 e 0 0 0 a: Limestone powder, b: High range water reducing agent, c: Viscosity-enhancing agent d: Quartz sand, e: River sand The test specimens are shown in Fig. 1.
The chloride penetrated into the specimens through the cracks at a comparatively early stage of the test, so the chloride penetration depth is not affected by the tightness of mortar matrix structure but by the crack properties.
Summarizing the above, it is considered that the factors that affect the maximum depth of chloride penetration are the cover and the deformation.
Rokugo, Mechanical performance of corroded RC member repaired by HPFRCC patching, Construction and Building Materials. 39 (2013) 139-147
Online since: September 2007
Authors: Lei Gang Wang, Xian Ping Sun, Yao Huang
Die wear is regarded as a crucial factor which affects die life and quality of products.
Lange and co-workers [5] reported that die lives in high temperature forming processes were affected by wear in over 70% of cases.
Results and Analyses Under the same initial conditions and material properties, the two kinds of die cavities are simulated with the finite element software MARC/Autoforge.
Kim: International Journal of Mechanical Sciences Vol. 43(2001), p. 1507 [2] S.K.
Ma: China Mechanical Engineering Vol. 16(2005), p. 368 [5] J.H.
Lange and co-workers [5] reported that die lives in high temperature forming processes were affected by wear in over 70% of cases.
Results and Analyses Under the same initial conditions and material properties, the two kinds of die cavities are simulated with the finite element software MARC/Autoforge.
Kim: International Journal of Mechanical Sciences Vol. 43(2001), p. 1507 [2] S.K.
Ma: China Mechanical Engineering Vol. 16(2005), p. 368 [5] J.H.