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Online since: September 2016
Authors: Paul Jonathan Hazell, Mahmud Ashraf, M.G. Rashed
Numerical simulation of the built parts also becomes difficult due to irregular physical properties including geometry and anisotropic nature of mechanical properties.
The mechanical properties of metallic microlattices depend on various factors including mechanical properties of the parent material itself, unit cell geometry and their connectivity, relative density, and the manufacturing technique used.
The effect of build angle plays a crucial role on the final mechanical properties of the microlattices [11].
The presence of these micro-voids and their stochastic nature of distribution introduce anisotropy in mechanical properties.
Hazell, Metallic microlattice materials: A current state of the art on manufacturing, mechanical properties and applications, Mater.
Online since: November 2012
Authors: Ricardo Simões, Gustavo R. Dias, António M. Cunha, Julio Viana
The other morphological parameters also affect the mechanical response, but to a smaller degree.
Earlier we have studied the mechanical properties [5] and the crack formation and propagation phenomena in PLCs [6].
The morphology of the material was also shown to affect its properties [8].
Thus, this parameter seems to have only a minor effect on properties.
The employed methodology has demonstrated its potential for prediction of mechanical properties.
Online since: April 2004
Authors: Chang Sung Seok, Jeong Pyo Kim, Bong Kook Bae
Especially the mechanical properties of inservice facilities under a cruel environment are decreased by material degradation.
This degradation of mechanical properties is an important factor that affects the safety of operation of facilities.
A harmonic generation of the incident wave is the most typical non-linear response in the material with non-linear factors[5-7].
Then it was compared with mechanical properties from ultrasonic parameters such as attenuation and non-linear parameter.
(4) So it's possible to evaluate the material degradation and material properties using the relation between ultrasonic parameters and mechanical properties.
Online since: September 2011
Authors: Jin Qiu Zhang, Ling Cheng
Mechanical Properties of 2D Braided Polyester Ropes Jinqiu Zhang1, a, Ling Cheng1, b 1Key Lab of Advanced Textile Composites, School of Textiles, Tianjin Polytechnic University, Tianjin 300160, China azhangjinqiu1987@126.com, bchengling@tjpu.edu.cn Keywords: 2D Braided, Polyester, Ropes, Mechanical Properties.
The relationship between the structure parameters and the mechanical properties of two-dimensional braided polyester ropes were studied. 22 times of polyester ropes were braided with different pitch length and different yarns, and their tensile properties were tested, then the relationship between the mechanical properties of the rope and braiding pitch was obtained.
The property of rope is determined by its raw materials and the processing method.
The mechanical properties of ropes involved many factors, but the relevant research are seldom.
How the processing parameters on the internal structure affect the mechanical properties of the rope was discussed.
Online since: July 2013
Authors: Takehiro Konoike, Masahiko Kimura, Hirohisa Kimachi, Hiroshi Takagi, Chiharu Sakaki, Motonori Nakamura, Kaori Shirakihara, Kesisuke Tanaka
A piezoelectric actuator generates large displacements under a continual-driving condition; it is thus important to improve not only the piezoelectric properties but also the mechanical and fatigue properties of its piezoelectric ceramics.
Table 1 Piezoelectric and mechanical properties of PZT-A and PZT-B To estimate the domain contribution on the fatigue life, fatigue tests on BST ceramics (with Curie temperature of 60°C) in both ferroelectric phase and paraelectric phase were carried out.
The above-described results indicate that the coercive field of piezoelectric properties strongly affects the fatigue life of piezoelectric ceramics, because the strength of the coercive field shows as difficulty of non-180° domain switching.
The piezoelectric and mechanical properties of two PZT ceramics are listed in Table 1.
Ec of PZT-A is 1.5 times higher than that of PZT-B in spite of the similar grain size, piezoelectric properties (ε33T/ε0, k31, and d31), and mechanical properties (Young’s modulus and bending strength) of the ceramics.
Online since: September 2013
Authors: Salim Abdul Salim Zainathul Akhmar, Ahmad Mohd Muhiddin, Jamil Siti Sarah, Zainuddin Nor Hazwani, Mohd Zaini Nurul Aizan
Therefore, an alternative from natural source is needed to replace carbon black as the reinforcing agent in rubber industries without so much affecting the physical and mechanical properties of the final products.
Natural fibres are more preferable and have many advantages to be used as fillers in rubber compounding due to the tremendous properties over other material such as light weight, low cost, renewable, good mechanical properties, ease of chemical and mechanical modification, water resistance, better dimensional stability, ease availability, recyclability and environmental friendliness [2].
The mechanical properties of rubber composite such as tensile strength, elongation at break and hardness are important to be measured.
One of the factors that contribute to the fracture was the uneven fibre distribution in the rubber matrix as can be seen from the Fig. 3.
Okieimen, Effect of coconut fibre filler on the cure characteristics, physio-mechanical and swelling properties of natural rubber vulcanisates, International Jurnal of Physical Sciences (2007) 039-046
Online since: March 2012
Authors: Chien Hung Kuo, Hsi Hsin Chien, Kung Jeng Ma
The Mechanical Properties of Platinum-Iridium Alloy Coating Hsi-Hsin Chien1,a, Kung-Jeng Ma1,b, Chien-Huang Kuo1,c 1College of Engineering, Chung Hua University, No. 707, Sec. 2, Wu Fu Rd., Hsin Chu, Taiwan 30067.
This study concentrated on the microstructure and mechanical properties of sputtered Pt-Ir alloy films.
There are several factors which affect the service life of the ceramic mold, such as the shape of the mold, glass materials, glass molding conditions, and protective coatings et al.
The mechanical properties of Pt-Ir alloy coating such as elastic modulus (Young’s modulus, E) and hardness were evaluated by nano-indentator.
Harada, Properties of the Ir85Nb15 Two-Phase Refractory Superalloys with Nickel Additions, Metallurgical and Material Transactions A, Vol. 30A (1999), p.2629-2639
Online since: August 2019
Authors: Gangi Srinivasu, Egala Rajesh, G.V. Jagadeesh, J. Satish
It is found that load is the highly influential factor affecting amount of wear, CoF and temperature followed by sliding distance and other factors.
Although thermoset polymers have low tribological properties, fibers, particles and whiskers can enhance the wear performance of composites.
It was found that castor oil fiber termed as ricinus communis, can be used for reinforcing in polymer matrix composites based on chemical, physical, thermal and mechanical properties.
· ANOVA shows that load is the highly influential factor affecting the amount of wear, coefficient of friction and temperature followed by sliding distance and other factors
Velten, Prediction on tribological properties of short fibre composites using artificial neural networks, Wear. 252 (2002) 668–675
Online since: January 2018
Authors: Lenka Bodnárová, František Girgle, Vojtěch Kostiha, Ondřej Januš
The alkaline environment of concrete with a pH higher than 12.0 affects the glass fibres degradative, whereas this degradation presents by reduction of their mechanical characteristics, resulting in a decrease in the tensile strength of the whole composite.
Properties of the FRP are now well known.
Composite reinforcements based on glass fibres (GFRP reinforcement) are presently being used the most often, due not only to their favourable physico-mechanical and chemical properties but also their good availability and lower initial cost [2].
The limiting factor is also the fact that the properties of the composite can be negatively affected by the alkaline environment of the concrete in the long term, which is of particular importance for the frequently used E and ECR glass fibres (for ex. [5], [8] or [1]).
It is therefore always necessary to take into account the limiting physical properties of the tested GFRP reinforcement.
Online since: November 2019
Authors: Patel G.C. Manjunath, M.J. Sandeep, Ganesh R. Chate, Mahesh B. Parappagoudar, Umesh M. Daivagna
Taguchi DEAR method is used to determine the single optimal levels of input factors that enhances the performances of all the sand mould properties.
Percent of clay and cow-dung found to be the most dominating factor towards all the sand mould properties.
The cow dung is having both binding as well as additive properties.
The amount of water and clay are the two important factors require proper control to attain best sand mould properties [16-17].
Mohamed Sokri, Mechanical properties and loss on ignition of phenolic and furan resin bonded sand casting.
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