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Depending on the chemical components of binder used, significant differences arise in the physical and mechanical properties of polymer concrete.
References [1] Ohama, Y., Demura, O., Mix proportioning and mechanical properties of polymethyl methacrylate resin concrete, Transactions of the Japan Concrete Institute, 3,(1981) 441-448
H., Mechanical properties of acrylic polymer concrete containing methacrylic acid as an additive", Construction and Building Materials, 37, (2012) 669-679
R., Factors affecting the curing and strength of polymer concrete, Journal of the American Concrete Institute, 80(5), (1983) 396-402
[6] Kobayashi, T. and Ohama, Y., Low-temperature curing of polymethyl methacrylate polymer concrete, Transportation Research Record 1003, International Symposium on Mechanical Properties of Special Concrete, (1984) 15-18

The various factors such as temperature, nozzle clogging, vibrations, misalignments, extrusion stop in the midpoint, dimensional inaccuracy, weak structure etc. are responsible to produce poor surface finish and defects in printing.
Mechanical vibration severely affects the printing quality, to maintain accuracy, researchers improved the mechanical properties of FDM parts.
In case of any impurity or any printing parameter-related error, the extrusion may get affected and further, it will affect the part quality.
Results show that nozzle clogging is one of the important factors which affects the quality of the finished part and can be monitored using vibration signals.
Pearce, Factors effecting real-time optical monitoring of fused filament 3D printing, Prog in Addt Manu, 2 (2017) 133–149

However, in practical application, we are mostly concerned with their mechanical properties, such as strength loss, which is directly related to the life of the building and safety [1-3].
Therefore the research of the mechanical properties of concrete after freezing and thawing cycles is chief.
It is owing to the concrete mechanical properties and internal structure all have changed after freeze-thaw cycles [4, 5].
To build reasonable concrete constitutive model and the corresponding failure criterion become the most fundamental factor that affect the accuracy of analysis results.
The equation of the curve contains the freeze-thaw performance and mechanical properties of the concrete.

These alloy properties are desirable requirements to be integrated in hot formed components.
In addition to these experimental results, thermodynamic calculations were done with help of the JMatPro software in order to analyse the effect of Mn and C on the resulting mechanical properties as a function of the quenching rate.
An important aim of this process is to obtain specific mechanical properties in selected areas of the manufactured components [1,2].
Mn is an alloying element which additionally offers the possibility of increasing hardness and other mechanical properties.
Bleck: Analysis of microstructure and mechanical properties of different hot stamped B-bearing steels.

This research used poly(L-lactic acid) (PLLA) which was blended with poly(ɛ-caprolactone) to improve their mechanical properties [6] using oil-in-water solvent evaporation method with Tween 80 and Span 80 as emulsifier.
Pores in microcapsules also became the factor that influences the release of drugs from the matrix.
Conclusion In this research, microcapsules simvastatin was made using matrix from PLLA and PCL which were blended to get better mechanical properties.
Atyabi, Effect of surfactant HLB and different formulation variables on the properties of poly-D,L-lactide microspheres of naltrexone prepared by double emulsion technique, J.
Alexis, Factors affecting the degradation and drug-release mechanism of poly(lactic acid) and poly[(lactic acid)-co-(glycolic acid)], Polymer International, 54 (2005) 36–46

The contour method, like most mechanical strain-relief based measurement techniques, can be affected by plasticity when measuring residual stresses of magnitude approaching the yield strength of the material.
Sections A and C were assigned identical material properties while section B was given a different yield stress and thermal expansion coefficient (see Table 1).
Table 1 The materials’ properties of the composite plate used for residual stress generation.
It is noteworthy that the reduced tensile stresses measured by the contour approach coincide with high values of stress intensity factor for such a crack, and therefore the contour measurement may well have been affected by plasticity under symmetric restraint conditions.
Journal of Mechanical Science and Technology, 2005. 19(10): p. 1885-1890

Thermal physical properties of materials.
Thermal properties change as temperature changing, which will greatly affect the results, so the accuracy of the thermal physical parameters is very important.
The thermal physical properties of 27SiMn steel and Ni60 alloy powder [2] are shown in Table 1.
From the simulation results we know that the mechanical combination of cladding layer and the matrix change into metallurgical combination, a good metallurgical combination of metallurgical state.
Among them, the main factors causing the error are the value of the absorption rate, the temperature change of the environment and the specimen and the determination of the thermal parameters in the cladding layer, which will be the future issue to research and explore.

Particular attention is focused on the influence of both grain interiors and grain boundary properties on the overall strength and ductility of the nc/ufc metals.
To particularly study the mechanical behaviors of the nc/ufc materials, as shown in Fig.1(a), and to investigate how the competition of grain-boundary deformation with that in the grain interiors determines the observed macroscopic stress-strain response and the overall ductility of polycrystalline aggregates by various properties of grain boundaries and grain interiors.
In a realistic physical sample of polycrystalline aggregates there are many factors which are relate to the initiation and propagation of intergranular fracture.
The distribution of grain geometry and grain property is also an important factor.
Wang: Single crystal elastic constants and calculated aggregate properties.

Introduction Nickel based alloy commonly known as difficult-to-machine material due to its excellent material properties such as high hardness, ability to withstand at high temperature, high corrosion resistance etc.
Chen and Lo obtained the experimental result of the factors that influence the tool wear in the hot machining of alloy steel.
The chemical composition, mechanical and physical properties are shown in Table 1 and Table 2.
The relationship between the factors and performance index measures was modelled by multiple regressions Eq. 7.
Lo, Factors affecting tool life in hot machining of alloy steels, International Journal of Machine Tool Design, vol. 14, (1974)161-173,

The results show that: the shaft torsional vibration and bending vibration have happened when the hybrid system is running, and the engine cylinder pressure change was the main factor which caused the shaft vibration.
A new incentive and restraint were added to the shaft system of the power system, and its mechanical structure was changed.
Thus, the body's power and vibration characteristics have been affected.
Shaft Vibration Modeling Methods The dynamics characteristics of shaft system not only related to the property of the shaft, but also to the incentive and the constraint of the shaft system.
Motor Model In the coaxial parallel hybird system, the diesel engine connected motor with coaxial mechanical structure.