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Some physical properties of acrylic sheet those considered for the CNC based milling process are: - Hardness: 16-22 KHN, which means acrylic is an easily crushed/ etched, mechanically.
- Acrylic has cold flow (creep) properties, (ie. if the acrylic loaded or at a constant pressure and then removed, it will change shape permanently)
Pretty good aesthetic properties, can be colored as required.
Chip formation is a reference to look at the effectiveness of machining processes, including heat generation process affecting the cutting tool life and the size of the work force in the process of cutting, etc [4].
Perform cutting simulation using CAD/ CAM software The factors to be considered are the design of the piece that will be used in the simulation.

The occurrence of efflorescence on the surfaces of AAMs does not compromise their durability or mechanical properties, although considerable amounts may impact their cured characteristics [6].
Factors affecting efflorescence formation include the type of alkali, the selection of raw materials, and the conditions prevailing in the reaction environment [7;8].
Specifically, investigations have highlighted those materials like silica fume, nano-silica, and waste foundry sand exhibit inhibitory properties against efflorescence while concurrently enhancing mechanical strength [6,9, 10].
Effects of type and dosage of alkaline activator and temperature on the properties of alkali-activated slag mixtures. 
Factors affecting the strength of alkali-activated slag. 

Introduction The temperature of hot strip coiling is a key factor affecting the hot-rolling strip’s performance and mechanical properties.
As extreme temperatures will affect the microstructure and properties of the strip, strip cooling system must be controlled precisely to ensure the coiling temperature [1].
So the relationship between the thermal properties and temperature must be considered.
Formula 8 contains some actual physical parameters such as nozzle diameter, nozzle arrangement, and water's velocity in the laminar cooling zone, also contains the speed of the strip, current density, temperature and other factors of dynamic changes.
Application and conclusions 3.1 Application To improve the uniformity of the mechanical properties and microstructure of the strip, accurate mathematical models and control strategies have very important theoretical and practical significance.

The clearance between the punch and die of a fine blanking tool is an important design factor that affects the sheared surface of a product.
Especially, researches on weight reduction of automobiles wherein strength of components and functional factors are satisfied while weight is decreased are very active.
Table 1 shows its mechanical properties.
Fig. 1 Structure of Al 5052 (ⅹ500) Table.1 Mechanical properties of Al 5052 Yield Strength [MPa] Tensile Strength [MPa] Elongation [%] 90 195 25 Fig. 2 shows the special part designed for fine blanking experiments.
Singer, in: Cold forming and Fineblanking - A handbook on cold processing, material properties, component design, EdelstahlwerkeBuderus AG, Feintool AG Lyss, HoeschHohenlimburg GmbH, KaltwaltzwerkBrockhaus GmbH (1997)

Influence of Initial Defects on the Mechanical Properties of Single Crystal Copper: Discrete Dislocation Dynamics Study Mingyi Zhanga, Min Zhongb, Shuai Yuanc, Jingsong Baid and Ping Lie Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China azmy1688@163.coml, bzm000@caep.cn, cyscaep_01@sina.com, dbjsong@foxmail.com, eLp0703@263.net Keywords: Discrete dislocation dynamics, single crystal copper, interstitial loops, irradiation defects, initial defect density.
Studies rarely pay attention to the influence of initial defects on the mechanical response of metals, though it is a key factor to determine the mechanical properties of crystalline metals [17].
In this paper, the DDD simulation is used to quantitatively study the influence of initial defects on the mechanical properties of single crystal coppers, and the underlying reasons for irradiation hardening and strain hardening are investigated and analyzed from the aspect of initial defects in crystalline metals.
Influence of Initial Defect Density on Mechanical Properties.
Interactions between dislocations and interstitial loops affect the evolution of dislocation microstructure.

Size effect, referring to mechanical properties of materials change with the geometry changes, is the basic characteristic of brittle and quasi-brittle materials.
Introduction Size effect[1-2] means the mechanical properties of the material is no longer a constant, changing with the geometry changes, For concrete materials, compressive strength and tensile strength decrease with the sections size increases, on the contrary, the fracture energy increases.
The mechanical performance of RC members, composed mainly by steels and concrete, depends on mechanical properties of concrete and steel.
Size effect of concrete will inevitably affect the mechanical properties of RC members.
The depth factor βd is given in order to consider the size effect.

Steel is the most versatile material and can be made into various forms, types or grades and possesses diverse mechanical properties that made it suitable for different uses.
Thus, in understanding the use of steel, the engineer will need to know how these processes affect the properties of steel.
There are many design factors and these can be found in design books but in the use of steel as design material, the following factors will receive much consideration.
An Introduction to the Properties of Engineering Materials.
Correlating Microstructural Features of Mechanical Properties with Abrasion Resistance of High Strength Low Alloy Steel.

Mechanical properties and fire resistance of geopolymer paste increase as the ratio of silica to alumina.
It is well known that geopolymer concrete possesses excellent mechanical properties, fire resistance, and acid resistance than OPC concrete.
This research only focuses on 3 main factors such as Si/Al ratio, water/solid ratio, and SiO2/Na2O ratio.
Her research shows that the mechanical properties of geopolymer increases by using SiO2/Na2O ratio up to 0.8.
"Alkali Activation of Metakaolins: Parameter Affecting Mecanical, Structural and Microstructural Properties."

The strength of a carbon nanotube (CNT) is predominantly influenced by factors such as the distribution of defects and various geometric aspects [4].
Furthermore, an investigation was carried out to explore how chirality affects the torsional properties.
In contrast, SWCNTs are more uniform in structure and, therefore, exhibit more consistent mechanical properties.
[7] BI Yakobson, P Avouris, Mechanical properties of carbon nanotubes, in: Carbon nanotubes: synthesis, structure, properties, and applications, Springer, 2001, 287-327
[11] C Goze, L Vaccarini, L Henrard, et al., Elastic and mechanical properties of carbon nanotubes.

To guarantee the reliability and safe operation of large-scale metallic structures exposed to cryogenic temperatures for extended periods, it is important to evaluate structural properties of the base metal as well as the welded zone in order to prevent damages that could occur.
Cryogenic materials used for the manufacture of inner tanks for LNG storage are composed of 9Ni steel plates with excellent structural and mechanical properties for a high safety level [1,2].
In order to prevent damages that could occur, structural properties of the welded zone are studied.
The tempering allows the formation of a small amount of austenite and gives superior mechanical properties for cryogenic steels [8].
YANG, Effect of Tempering Temperature on Microstructure and Mechanical Properties of Steel Containing Ni of 9%, J.