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Limit Pressure of Rupture Discs Found on Tensile Instability Condition Guangfan Gao1,a, Guodong Wang1,b, Xinwei Ding2,c and Jiangjun Chen1,d 1 College of Mechanical & Energy Engineering, Jiangsu Polytechnic University, Changzhou, 213016, China 2 Institute of Special Chemical Equipments, Dalian University of Technology, Dalian, 116012, China a g.gf@163.com, bwangguodong1982@163.com, cxwding2003@hotmail.com, dskyouchen@163.com Keywords: Instability, Limit pressure, Bulge, Strength coefficient, Rupture disc.
This has potential value for the tests of mechanical properties of sheet metals.
This may be affected by many factors such as loading, material, structure and the like.
Considering that measurement of limit pressure is the simplest one among that of all parameters, the formula will benefit the test method of mechanical properties of sheet metals, especially the tensile tests at elevated temperature or low temperature.

However, due to their the hexagonal close-packed structure and low stacking fault energy[3-4], ZK series magnesium alloys also exhibit many drawbacks such as poor plastic deformation ability at low temperature, elevated temperature mechanical strength and creep property, and yield asymmetry in uniaxial tension and compression.
It is well known that the strength of alloy is mainly due to very fine precipitates, containing both Zn and Zr, for its solid-solution strengthening effects to optimizing the mechanical properties of magnesium alloys [7].
These different studies covered the various microstructural evolutions, mechanical properties and corrosion protection [9-10], correspondingly, and there is less study on the constitutive relation of the alloys with during deformation.
Constitutive equations The deformation behavior is mainly affected by compression condition.
The flow stress is significantly affected by deformation temperature and strain rate, the flow stress decreases with the deformation temperature increasing and strain rate decreasing

Since the last two structures are not predominant, they do not represent a major factor in the resulting material properties after the PDA.
On the whole, if we neglect these additional factors, the maximum value and the degree of the realization of the theoretical limit of the recovery strain is affected by two main factors. 1) The first, i.e.
Static functional properties.
Note that similar evolution of mechanical properties as a function of CR-PDA processing can be observed for Ti-50.6%Ni alloy.
Two main factors affect the value and realization theoretical limit of recovery strain in Ti-Ni SMA.

BASHEER1, d, Muhammad Hanafi MD SAH1, e and Sheikh Hussain SHAIKH SALLEH2, f 1 UTM Centre for Low Carbon Transport, Faculty of Mechanical Engineering, Malaysia 2Centre for Biomedical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Malaysia aalias@mail.fkm.utm.my, bizam3369@yahoo.com, csrithar@fkm.utm.my, dummb2008@gmail.com, em.hanafi@utm.my, fhussain@fke.utm.my Keywords: Turbo-Compounding; Exhaust Thermal Energy; Waste Heat Recovery; Engine Downsizing and Turbocharger.
It also looked into the potential for energy recovery, performances of each technology and factors affecting its implementation.
Introduction Various methods of TER for ICE are available, Electrical Turbo Compounding (ETC), Thermoelectric Generator, Bottoming Cycles and Mechanical Turbo Compounding (MTC), each producing electrical energy except the MTC.
In addition to the physical properties of the engine, a combustion model must be entered.
Results and Discussions When a power-turbine is installed downstream the turbocharger, the performance of the engine will be affected.

Detecting DNA Using a Single Graphene Pore by Molecular Dynamics Simulations Wei Si1, Jingjie Sha2, Lei Liu , Jiapeng Li , Xiaolong Wei ,Yunfei Chen3 Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 210096, People’s Republic of China 1southeast_siwei@sina.com, 2major212@seu.edu.cn, 3yunfeichen@seu.edu.cn Keywords: dsDNA; graphene; MD simulation; gromacs; block current; translocating time Abstract：DNA charged negatively could be transported through a solid nanopore by the force of an electrical field.
Recently, the nice properties of graphene attract a lot of researchers.
For multiple graphene membranes, the factors affect DNA translocating time may occur, so we can’t just use the Van der Waals force as the dominating reason.
The main factors affecting DNA transport were the electrical field and diameter of pore, which can control the velocity of DNA.

Particle Size Dependent Structural and Magnetic Properties of Cocrfeo4 Nanoparticles DHANRAJ R.
In order to get insight into the type of deviations in the structural and magnetic properties of the nanoparticles from that of the bulk, in this study the properties of CoCrFeO4 nanoparticles has been studied.
All of these factors can lead to a break in the exchange bonds at the surface, which in turn leads to frustration and spin disorder [11].
Conclusions The influence of the annealing temperature, on the particle size and magnetic properties of the CoCrFeO4 ferrite samples synthesized by the sol-gel auto combustion method was investigated with the aim of tuning the magnetic properties.
Coercivity affects the shapes of the ZFC curves of the CoCrFeO4.

Therefore, most Al alloys require aging process to further improve their mechanical properties.
σ/[MPa] Si Mg Mn Ti Zr Cr Fe Li Cu Ni Binary Si 128 70.5 63.2 181 67.3 59.9 72.8 65.1 79.8 115 Mg 128 201 86.6 213 77.6 86 162 90.8 78.4 155 Mn 70.5 201 73.6 226 67.9 66.1 75.9 64.8 67 79.9 Ti 63.2 86.6 73.6 244 88.4 88.6 81.1 70.2 63.8 67 Zr 181 213 226 244 222 218 245 215 194 254 Cr 67.3 77.6 67.9 88.4 222 54.7 70.2 60.2 55.4 66.3 Fe 59.9 86 66.1 88.6 218 54.7 72.2 60.4 62.4 55.4 Li 72.8 162 75.9 81.1 245 70.2 72.2 75.3 66.2 86.5 Cu 65.1 90.8 64.8 70.2 215 60.2 60.4 75.3 65.9 57.7 Ni 79.8 78.4 67 63.8 194 55.4 62.4 66.2 65.9 62.7 Table 1 The yield strength of ternary system and binary system 3.2 Ternary Al alloy Fig.2 The result of the interaction energy between atoms (a)X-X atoms (b)X-Zr (c)X-Mg First of all, compared with binary alloys, the composition of ternary alloys is more complicated, so the factors affecting the yield strength have also increased.
It has been reported[20] that the introduction of Zr and Mg into aluminum alloys refines the grain structure and enhances mechanical properties.
To further advance this research, future studies could focus on experimentally validating the simulation results and exploring the effects of additional alloying elements on the mechanical properties of Al alloys.
This work could also be extended to explore the impact of temperature and environmental factors on the stability and performance of these alloys.

In fact, it has considerable effect on some properties such as wear resistance and fatigue strength; thus, the quality of the surface is of significant importance for evaluating the produced mechanical parts.
In order to understand how cutting conditions affect surface quality and properties in advance, it is necessary to employ theoretical models to do predictions in function of machining conditions.
As a consequence, a proper choice of these factors allows to enhance process performance and surface quality.
Furthermore, the ANOVA (Tab. 4) underlined the higher role played by the first order factors, the quadratic factors f2 and, as a consequence, by the first order interaction V*f.
In particular, apart of the linear influence from the single factors, a first order interaction V*f was also found.

This will directly affect the fatigue life.
Process like decarburization affects the hardness of the surface and fatigue life changes.
Machining parameters of AFM and the rheological properties of the abrasive medium are the two factors that will affect the efficiency of the process.
Removing the stress raisers at sharp corners by producing controlled radii on edges can substantially improve thermal and mechanical fatigue strength.
Design of experiments A statistically design of experiments (DOE) technique, two-levels three variable full factorial design of experiments is used here [14].The three design factors considered in the design of the experiments are extrusion pressure (A), grain size(B) (or mesh number) and abrasive concentration (C).

Static indentation and penetration properties of metal foams have been studied by Olurin et al
Model Validation Properties of CYMAT Aluminium Foam.
Table 1 Material properties for CYMAT foam with 20% relative density.
Energy absorption performance of the aluminium foams is one of the most important factors in their applications.
Ashby: Cellular Solids: Structure and Properties (2nd edn.