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Online since: September 2011
Authors: Toshio Narita
In particular the SRZ can significantly degrade the mechanical properties of advanced Ni base single crystal superalloys (2, 4, 6).
However, properties and characters of the Al2O3 scale are not clarified yet.
Harada: Effect of Aluminide Coating on Creep Properties of Ni-Base Single Crystal Superalloys, J.
Arai: Stability and Mechanical Property of Sprayed EQ Coating, J.
Hayashi: Compositional factors affecting the establishment and maintenance of Al2O3 scales on Ni-Al-Pt systems, J.
Online since: October 2008
Authors: H.J. McQueen
Excessive size and quantity of GB particles can seriously reduce service properties.
Imbert, in: Thermomechanical Processing and Mechanical Properties of Hypereutectoid Steels and Cast Irons, edited by D.R.
Belling: Al Alloys, Physical and Mechanical Properties, edited by E.A.
Nes, in: Aluminum Alloys, Physical and Mechanical Properties, edited by E.A.
Sherby, in: Thermomechanical Processing and Mechanical Properties of Hypereutectoid Steels and Cast Irons, edited by D.R.
Online since: December 2012
Authors: Chia Chun Yu, Shih Cheng Wang, Cherng Shing Lin, Te Chi Chen
The temperature distribution for RC material is affected by heat specific and heat conduction coefficient.
A steel bar mechanics and thermal properties are simple due to it is homogeneous material.
Therefore, the physical and chemical properties in different heated history and intensity are complex development due to much small holes and some steam in the concrete material [2 - 8].
Therefore, the fire intensity sizes are major factor for beam strength decrease after a fire.
Hsu: Numerical Modeling of Mechanical Properties for Reinforced Concrete Beams Exposed to Fire, Doctoral thesis (2006)
Online since: November 2024
Authors: Mohd Hafiz Dzarfan Othman, Rhafiq Abdul Ghani, Aulia Rahma, Mahmud Mahmud, Muthia Elma, Rendy Muhamad Iqbal, Rahmat Subkhan
Meanwhile, FS membrane was added by pectin to increase the hydrophilic properties.
These two membranes are compared due to several factors that will determine which membrane is more suitable for use in the treatment of pome waste.
While inorganic membranes may offer certain advantages, such as good hydrophilicity, selectivity, permeability, mechanical strength, and thermal and chemical stability [33, 34], polymer-based membranes stand out for their inexpensiveness, ease of processing, and relatively better mechanical properties [35].
Pectin was added to the fabrication of the membranes to improve the hydrophilic properties [42].
PVDF has strong chemical and mechanical resistance properties, considered more suitable in this process due to POME characteristic that high in chemical matter [56].
Online since: January 2021
Authors: Alessia Campiche
Since the system under investigation is not covered by European building code [23], following the prescriptions of Italian building code [24] for the seismic design of non-dissipative systems, which suggests a behaviour factor in the range 1.0 through 1.5, a behaviour factor equal to 1.0 was used in the design, in order to have an assumption on the safe side.
Since the UHS steel diagonals are pre-tensioned in the system, it is important to evaluate the viscous properties of material, which is still unknown from this point of view.
Since the assembly between nut and UHS steel bar is not codified and the behaviour of the innovative wall system can be affected by nut failure, a series of eight tests on different configurations was carried-out.
Instead, for all the specimens with two nuts having property Class equal to 10 (D2_10_1, D2_10_2 and D2_10_3) and one nut having property Class equal to 12 (D1_12_1, D_1_12_2 and D1_12_3) the tension failure of bar happened.
Fiorino, Behaviour factor evaluation of CFS shear walls with gypsum board sheathing according to FEMA P695 for Eurocodes, Thin-Walled Structures, Elsevier Science, 141 (2019) 194-207
Online since: October 2016
Authors: Tetsuhide Shimizu, Ming Yang, Qiu Zheng
Strain gradient is known as an important factor that influences springback of bent components in microscale.
Introduction Microparts are widely used in electronics, micro electro mechanical system (MEMS) and biomedical devices due to the tendency of miniaturization in the industry.
As we know, the springback in bending process affects the accuracy of deformed parts significantly.
Tensile properties and constitutive model of ultrathin pure titanium foils at elevated temperatures in microforming assisted by resistance heating method, Mater.
Effect of Heat on Tensile Properties of Thin Pure Titanium Foils, Manufacturing Review, 2 (2015) Article No. 3
Online since: May 2010
Authors: Susanne Eva Cordes, Klaus Gerschwiler, Fritz Klocke
These materials were chosen because their physical and mechanical properties place great demands on the wear resistance of the tool.
The uncoated cemented carbide tools were affected by the high thermomechanical load.
Notwithstanding of the better properties of ester oils in comparison to mineral oils, such as a low volatility, a high flash point, better lubricating properties, skin tolerance and biodegradability, in the majority of cases (approx. 90%), where the lubricant is an oil, mineral oils are chosen.
The different cooling and lubricating properties of the machining fluids have an effect on the tool wear mechanisms in the machining process.
Aluminium oxide has a range of properties which predestine it for a use as coating material in machining of difficult-to-cut materials.
Online since: April 2022
Authors: Gabriele Guerrini, Andrea Bruggi, Santi Urso, Marco Quaini, Andrea Penna
All strengthening solutions proved effective at increasing this mechanical parameter, with magnification factors ranging between 1.9 and 4.7.
Mechanical properties of stones, reinforcing textiles and meshes, and connectors were taken from technical sheets or official testing certificates; their derivation is not discussed in this paper.
Material Properties Mean values of the compressive and tensile strengths of masonry and jacketing mortars are shown in Table 1, together with their coefficients of variation.
Table 1: Mortar mechanical properties.
Masonry PVA PBO NHL15 NHL10 CEM15 RW fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] Mean 1.25 0.47 68.5 9.3 31.2 7.0 22.4 6.4 9.3 2.7 17.3 5.6 68.2 9.7 C.o.v. 27% 36% 13% 11% 18% 17% 9.4% 7.2% 7.0% 5.4% 4.3% 7.5% 4.8% 9.4% Table 2: Bare masonry mechanical properties.
Online since: January 2021
Authors: S. Sudhaparimala, R. Usha
The adsorption and photo catalytic properties of the asprepared samples were screened for the degradation process and it was found that sulphur doped graphene oxide showed more positive results for the degradation of chlorophenols than graphene oxide.
In the list of wonder materials, graphene has attracted much of researcher’s attention due to its excellent chemical, electronic, mechanical, and physical properties that can be modified or tuned by introducing hetero atoms of N, O or S thus making it multi functional.
These factors influence their catalytic activity especially when the mechanism is more of adsorption.
These factors are influenced by the pH of the adsorbent and adsorbate.
The screening process clearly indicates that the above factors can be tuned to make the GO and S-GO as efficient catalysts for the degradation of chlorophenols in particular.
Online since: February 2013
Authors: Yuan Ping Ma, Yong Li Liu, Tao Qin, Chang Ji Dong
Introduction Gas disaster is one of the most serious disasters in China’s coal mines, gas disasters not only cause huge losses of state property and citizens' lives , but also greatly restrict the mine production capacity.
Therefore, with the improvement of the level of mine production that is mechanical and intensive, many mines have been into the deep mining, and there are more and more serious coal mine gas disaster.
In this paper, based on the data from the analysis of the geological structure in the Shingling Mine, Analyzing geological structure of the No.56 coal seam in the Shengli Mine, roof and floor lithology of coal seam make on mine gas occurrence; Analysis influencing factors, including gas emission, gas content and gas pressure, by collecting and finishing the absolute gas emission data since the mine construction and measuring gas content.
The permeability of the coal bed surrounding rock is good or bad, which directly affects the occurrence of coal seam gas, migration or enrichment.
This explain that seam floor elevation is the main factor of No.56 coal seam gas content and it’s gas content gradients up to 1.66m3/t/100m.
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