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Online since: July 2024
Authors: Mohd Gulam Waris Khan, Sadaf Ahmad
In the Indian context, the use of plastics in food packaging has witnessed exponential growth, driven by factors such as urbanization, changing lifestyles, and an expanding consumer base.
The ideal packaging system for these goods should maintain their quality over time and have sufficient mechanical properties.
The most crucial factors for the packaging and storage of food grains were taken into consideration when choosing the parameters for the tests and trials.
" • The tensile strength and stretch ability of PP Woven Sacks are superior mechanical properties
Notably, plastics exhibit commendable strength with high thermo-mechanical properties and chemical resistance, providing an excellent barrier against moisture.
The ideal packaging system for these goods should maintain their quality over time and have sufficient mechanical properties.
The most crucial factors for the packaging and storage of food grains were taken into consideration when choosing the parameters for the tests and trials.
" • The tensile strength and stretch ability of PP Woven Sacks are superior mechanical properties
Notably, plastics exhibit commendable strength with high thermo-mechanical properties and chemical resistance, providing an excellent barrier against moisture.
Online since: October 2018
Authors: Hamid Nikraz, Korakod Nusit, Peerapong Jitsangiam
The improvement of moisture damange resistance of asphalt concrete as a asphalt pavement surface is the way to enhance essential properties of the asphalt concrete mixture components between mix aggregate and a binder (asphalt cement) to withstand adverse effects from moisture.
This method allows for a fundamental mechanism of moisture damage to be analysed from an inside out perspective, free of external influencing factors.
Properties of the materials involved directly affect the adhesive ability of the aggregate and binder within the asphalt mix [3].
These properties include the surface free energy (SFE) and the aggregate mineralogy.
Two aggregates, namely Boral and BGC aggregates, sourced from different quarries around Perth in WA were used to replicate the physical aggregate properties used in asphalt pavement throughout the metropolitan region.
This method allows for a fundamental mechanism of moisture damage to be analysed from an inside out perspective, free of external influencing factors.
Properties of the materials involved directly affect the adhesive ability of the aggregate and binder within the asphalt mix [3].
These properties include the surface free energy (SFE) and the aggregate mineralogy.
Two aggregates, namely Boral and BGC aggregates, sourced from different quarries around Perth in WA were used to replicate the physical aggregate properties used in asphalt pavement throughout the metropolitan region.
Online since: May 2014
Authors: Ke Huang, Ning Wang, Knut Marthinsen
Modelling Microstructure and Properties during Annealing of Cold-rolled Al-Mn-Fe-Si-alloys with different Microchemistries
Knut Marthinsen1,a, Ning Wang1,b, and Ke Huang1,c
12Norwegian University of Science and Technology, N-7491 Trondheim, Norway
aknut.marthinsen@ntnu.no, bning.wang@ntnu.no, cke.huang@ntnu.no
Keywords: Recovery, recrystallization, concurrent precipitation, Zener drag, modelling.
Introduction To control mechanical properties of a material subjected to an annealing treatment after cold rolling, an adequate quantitative description of the softening behavior is crucial.
Also for the second variant (C1-B, Fig. 1b), which is moderately affected by pre-existing dispersoids (cf.
In terms of modelling, a somewhat better agreement is obtained with a combination of a much lower mobility pre-factor M0 and a tripled PZ value (dashed line).
Wang, Microstructure, microchemistry and properties during annealing of cold-rolled Al-Mn-Fe-Si-alloys – Experiments and Modelling.
Introduction To control mechanical properties of a material subjected to an annealing treatment after cold rolling, an adequate quantitative description of the softening behavior is crucial.
Also for the second variant (C1-B, Fig. 1b), which is moderately affected by pre-existing dispersoids (cf.
In terms of modelling, a somewhat better agreement is obtained with a combination of a much lower mobility pre-factor M0 and a tripled PZ value (dashed line).
Wang, Microstructure, microchemistry and properties during annealing of cold-rolled Al-Mn-Fe-Si-alloys – Experiments and Modelling.
Online since: December 2011
Authors: Zhong Min Liu, Guo Jin Chen, Ting Ting Liu, Shao Hui Su, Guang Jie Yuan, Yi Jiang Cao
Therefore the independent intellectual property rights on the key parts’ assembly technology, the overall engine assembly technology and the bench test system design technology of the high-power low-speed marine diesel engine are formed to improve the technical level of the China's marine main engine industry.
Assembly of Intake and Exhaust System and Timing Adjustment of Valve The valve timing is one of the key factors that affect the intake process of the low-speed marine diesel engine, and directly affects the whole power, economy and emission performance.
That brings about the significant differences in the cylinders’ performance and affects the overall performance.
The disadvantage is that the actual working conditions have the cylinder pressure to affect the valve opening process, and the valve timing in turning the camshaft at a low-speed differs from the one in the actual working condition.
After analyzing the diesel engine vibration, the shock-absorbing structure is applied to avoid the test platform’s resonance caused by the mechanical vibration of the diesel engine.
Assembly of Intake and Exhaust System and Timing Adjustment of Valve The valve timing is one of the key factors that affect the intake process of the low-speed marine diesel engine, and directly affects the whole power, economy and emission performance.
That brings about the significant differences in the cylinders’ performance and affects the overall performance.
The disadvantage is that the actual working conditions have the cylinder pressure to affect the valve opening process, and the valve timing in turning the camshaft at a low-speed differs from the one in the actual working condition.
After analyzing the diesel engine vibration, the shock-absorbing structure is applied to avoid the test platform’s resonance caused by the mechanical vibration of the diesel engine.
Online since: September 2010
Authors: J. Oseguera-Peña, J. González-Sánchez, J. Solis-Romero, J. Verduzco-Martínez
There are various treatments
used to improve fatigue properties: thermal, chemical and mechanical methods, all have
applications in this area.
Improved mechanical strength and fatigue properties are desirable in all engineering components, allowing lighter, more efficient operation in these circumstances.
This process alters the microstructure and properties of the peened layer, and therefore, fatigue damage needs to be assessed in terms of microstructural fracture mechanics [6].
The chemical composition and mechanical properties of the alloy are depicted in table 1.
Materials: Mechanical properties and chemical composition [13].
Improved mechanical strength and fatigue properties are desirable in all engineering components, allowing lighter, more efficient operation in these circumstances.
This process alters the microstructure and properties of the peened layer, and therefore, fatigue damage needs to be assessed in terms of microstructural fracture mechanics [6].
The chemical composition and mechanical properties of the alloy are depicted in table 1.
Materials: Mechanical properties and chemical composition [13].
Online since: September 2014
Authors: Xiang Dong Kong, Li Juan Wang, Chun Qing Liu, Jing Chang Feng, Jin Zhang
The flow equation of the valve port is:
(17)
Affected by the compression and external leakage factor, the input and output flow of the hydraulic cylinder is not equal.
The design of robust controller 3.1 Introduction to the robust controller Robustness of control system is designed as the capability to keep stability and optimality constantly with the uncertainty factors, such as interference and modelling errors.
The low-pass filter link is to guarantee the realization of the zero factor link.
A simulation of traditional PID controller has also been done to compare the property of the electro-hydraulic proportional control system with that of adding robust compensator.
It can affect the positioning precision of the position closed-loop servo system.
The design of robust controller 3.1 Introduction to the robust controller Robustness of control system is designed as the capability to keep stability and optimality constantly with the uncertainty factors, such as interference and modelling errors.
The low-pass filter link is to guarantee the realization of the zero factor link.
A simulation of traditional PID controller has also been done to compare the property of the electro-hydraulic proportional control system with that of adding robust compensator.
It can affect the positioning precision of the position closed-loop servo system.
Online since: September 2008
Authors: Byung Geun Ko, Hyok Chon Kwon, Song Jun Lee
The fundamental properties of IPMC as an actuator
and sensor are explained as follows.
The level of generated voltage depends on the amount of mechanical variation.
Since IPMC materials have both sensor and actuation properties, one IPMC is enough for the sensing while it is actuating.
Although both of actuator, and sensor phenomena are known for a long time, there are only very few attempts to make use of the sensor and actuator properties of an IPMC simultaneously.
Without that consideration, the output voltage for sensor is affected by the input voltage for actuation.
The level of generated voltage depends on the amount of mechanical variation.
Since IPMC materials have both sensor and actuation properties, one IPMC is enough for the sensing while it is actuating.
Although both of actuator, and sensor phenomena are known for a long time, there are only very few attempts to make use of the sensor and actuator properties of an IPMC simultaneously.
Without that consideration, the output voltage for sensor is affected by the input voltage for actuation.
Online since: April 2013
Authors: Waluyo Adi Siswanto, Perowansa Paruka
Many factors that have direct affect to the impact testing of cylindrical tube structures have been investigated.
The mechanical properties used are the following: Young’s modulus E=69GPa; Poisson’s ratio ν=0.34; Mass density ρ=2.72 × 10-6 Mkg/L; Yield stress σy=0.260GPa; Ultimate stress σu=0.290GPa; Plastic hardening factor=0.1; and the strain failure 0.3.
Paruka, High Speed Impact Performance of Metal Tube Structure, B.Eng Thesis, Faculty of Mechanical and Manufacturing Engineering, UTHM, December 2011.
The mechanical properties used are the following: Young’s modulus E=69GPa; Poisson’s ratio ν=0.34; Mass density ρ=2.72 × 10-6 Mkg/L; Yield stress σy=0.260GPa; Ultimate stress σu=0.290GPa; Plastic hardening factor=0.1; and the strain failure 0.3.
Paruka, High Speed Impact Performance of Metal Tube Structure, B.Eng Thesis, Faculty of Mechanical and Manufacturing Engineering, UTHM, December 2011.
Online since: September 2014
Authors: E Chuan Yang, Feng Kang, Qiang Chen, Chuan Kai Hu
Consequently, the crankshaft requires not only good comprehensive mechanical properties such as high strength, rigidity, wear-resisting and anti-fatigue, but also favorable microstructure.
Among them, flash thickness and the fillet size of rod journal and main journal are structurally the main factors which affect the forming effect.
Initial forging temperature was set at 1150℃, the friction factor is 0.3, and coefficient of thermal expansion of the die was set at 1.4%, without warm-up.
MECHANICAL ENGINEERING & AUTOMATION, 2008,6(151):198-200
Among them, flash thickness and the fillet size of rod journal and main journal are structurally the main factors which affect the forming effect.
Initial forging temperature was set at 1150℃, the friction factor is 0.3, and coefficient of thermal expansion of the die was set at 1.4%, without warm-up.
MECHANICAL ENGINEERING & AUTOMATION, 2008,6(151):198-200
Online since: November 2019
Authors: Karuppasamy Prem Ananth
Also, the mechanical properties of the bilayer coating showed higher adhesion strength than HAp and F-HAp coatings on 316L SS.
PCL is a semi-crystalline aliphatic polymer with good biocompatibility and amazing mechanical properties [10, 11].
The relationship between the mechanical properties and cell behaviour on PLGA and PCL scaffolds for bladder tissue engineering.
Part II: mechanical properties of solid solutions determined by microindentation.
The effect of fluorine content on the mechanical properties of poly (ɛ-caprolactone)/nano-Fluoridated hydroxyapatite scaffold for bone-tissue engineering.
PCL is a semi-crystalline aliphatic polymer with good biocompatibility and amazing mechanical properties [10, 11].
The relationship between the mechanical properties and cell behaviour on PLGA and PCL scaffolds for bladder tissue engineering.
Part II: mechanical properties of solid solutions determined by microindentation.
The effect of fluorine content on the mechanical properties of poly (ɛ-caprolactone)/nano-Fluoridated hydroxyapatite scaffold for bone-tissue engineering.