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Literature Review Aim to improve mechanical properties of FDM parts, several efforts have been made to study effects of various process parameters on it.
The bonding phenomenon is thermally controlled and ultimately determines the integrity and mechanical properties of the resulting prototypes.
Marloth “Effect of Layer Orientation on Mechanical Properties of Rapid Prototyped Samples” 2000, Materials and Manufacturing Processes
[2] Jaya Christiyana KG, Chandrasekharb U, Venkateswarluc K (2016) “A study on the influence of process parameters on the mechanical properties of 3D printed ABS composite”.
“Anisotropic material properties of fused deposition modelling ABS”.

The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques.
Introduction The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques [1].
The factors with an influence on dimensional stability are: impression material width; tensile modulus; temperature during the imprinting process; storage humidity; the time lapse between imprinting and casting.
As material properties vary considerably according to the chemical composition, each having both advantages and disadvantages, it is necessary to know the material properties in order to use them differently according to the working technique and to the particular clinical case.
The immediate model casting is a condition for accuracy, any delay affecting the details.

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 nonlinear equations of indices related to some factors for measuring deformation degree of chip have been ascertained.
Introduction High speed machining (HSM) is a new rapid developed technology for mechanical industry in the present world.
The average factor of deformation for trapezia chip become
Shear strength relates to character of material, deformation of chip and cutting temperature as well as degree and velocity of deformation. 3 Conclusions Through the analysis of character of shear slippage of plastic metal at HSM, indices of measuring deformation are determined and main factors affecting deformation are probed into, building model of cutting and equation of deformation.
A new multi-view approach to characterize 3D chip morphology and properties in end milling titanium Ti-6Al-4V[J].

Mechanical properties of GFRP and masonry constituents.
The result variability can be attributed to several factors, such as the specimen preparation, randomly distributed interface properties, alignment of glass fibers in the anchor, and alignment between the anchor axis and the load direction [9].
Indeed, the inhomogeneity of masonry substrates determines different interface properties that in turn affect the bond behavior [17].
Conclusions In this paper, the mechanical and bond properties of GFRP anchors designed for FRCM applications were investigated.
The results obtained provide important information on the mechanical properties and maximum load that can be borne by the anchors.

In this work acetylated corn starch was taken as the raw material and its filming property was studied through single-factor and orthogonal array design experiments.
During the past few years, biodegradable polymers with suitable mechanical and physical properties have received particular attention and can be potentially used to replace petroleum-based plastics [5-6].
Testing film properties.
The comprehensive properties of the films were evaluated with full marks of 100 points.
In the optimized film-forming formula A1B3C1D1, the most important factor that affects the film properties should be glycerol concentration, sequentially followed by acetylated corn starch concentration, PVA concentration and the glutaraldehyde concentration.

Table1 The Chamical Composition Content(%) Element C Si Mn P S Cr Ni Cu sample 0.43 0.25 0.64 0.008 0.010 0.04 <0.02 0.08 Standard value 0.42~0.50 0.17~0.37 0.50~0.80 <0.04 <0.040 <0.25 <0.25 <0.30 Material defects.Selecting the part of the off-axis conducts materials analysis and experiment about mechanical properties, Materials analysis results show that if the elected materials are made of high-quality carbon structural steel and alloy steel and not through the effective heat treatment, the material performance will be poor, not strong enough.
According to Mechanical Engineering Materials Handbook, when the survival rate is 95%, the fatigue limit of the 45 carbon steel in the development lifespan of : is 334Mpa,is 1.76,is 0.62,β is 0.89,==71.3Mpa,so the fatigue strength of the roller shaft is checked to : ===1.4.
n is allowed safety factors are generally defined as:Uniform material,high calculation accuracy when n 1.3 ~1.5;Uneven material, low calculation accuracy when n = 1.5 -1.8;Poor material, low calculation accuracy when n=1.8~2.5.
By reducing the effective stress concentration factor kτ of components shear stress, improving components surface quality factor β, we can make the origin time of the fatigue crack source become longer, thereby increasing its fatigue lifespan.
The materials must meet the mechanical properties and microstructure, inclusion level standards of the design requirements.

The decrease of the mechanical properties – hardness and reduced elastic modulus after corrosion in white wine was measured.
CSM is useful for the measurement of nanomechanical properties of non-homogenous materials, such as corroded teeth, in which the mechanical properties changes with the indentation depth.
Although the surface roughness is often used for the evaluation of tooth enamel corrosion at the later stage of corrosion, here even the decrease of the mechanical properties by factor four do not affect the surface roughness.
To obtain a relevant data on the values of mechanical properties, the natural surface of a tooth should be tested.
Weihs, Nanoindentation mapping on the mechanical properties of human molar tooth enamel, Arch.

In modern construction, the use of fine-grained concrete (FGC) is due to its special properties compared to traditional heavy concrete.
The third factor ‒ the content of the chemical additive does not directly affect the strength of the FGC, since its task is to regulate the W/C.
Factor х3 (plasticizer) also significantly affects the density; a coefficient b33 = –53.66 indicates the presence of an optimal area.
Dvorkin, Design prediction of properties and design of concrete compositions, М.: Infra Engineering, 2016
Dvorkin, Physico-mechanical properties of activated cement-ash binders, Concrete Technology, 2010, no. 11-12, pp. 35-37

The evolution of the property of polymeric membrane exposed to ultrasonic irradiation is followed by the calculation of membrane damage factor (R).
The evolution of the property of polymeric membrane exposed to ultrasonic irradiation is followed by the calculation of membrane damage factor.
The evolution of the property of polymeric membrane exposed to ultrasonic irradiation is followed by calculating the membrane damage factor (R).
Ultrasound has both mechanical and chemical effects, caused by cavitation [4].
Fig. 3 Effect of the height of membrane on the membrane damage factor Fig. 4 Effect of nominal ultrasonic power on the membrane damage factor Fig. 5 Effect of ultrasonic frequency on the membrane damage factor Fig. 3 represents the effect of H on R.