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The relationships among the fiber properties such as fiber density, fiber diameter, fibrous material layer were considered as a factor that influences the sound absorption property.
Susilo: Synthesis and Structure Properties of Rigid Polyurethane Foam from Palm Oil based Polyol.
Sporns: Physical Properties of Polyurethanes Produced from Polyols from Seed Oils: II.
Tuan Ya: Mechanical Properties of UV Irradiated Bio Polymer Thin Films Doped With Titanium Dioxide.
Anika Zafiah : Morphology and Mechanical Properties of HDPE / Bio-polymer as Compounding Materials.

Mabuwa and Msomi [25] investigated the effect of friction stir processing on the mechanical properties of friction stir welded AA1050-H14 and AA6082-T6.
Merdji, The mechanical properties of AA6082/AA1050 dissimilar joints subjected to multi-pass friction stir processing, Engineering Research Express 3, 3(2021), p.035012
Shanmughanatan, M.B Kiran, Effect of tool geometry on microstructure and mechanical Properties of friction stir processed AA2024-T351 aluminium alloy, Mater.
Aloraier, Microstructure and mechanical properties of multi-pass friction stir processed aluminium alloy 6063, Materials & Design, 53(2014), pp.550-560
Shanmughanatan, M.B, Kiran, Effect of tool geometry on microstructure and mechanical Properties of friction stir processed AA2024-T351 aluminium alloy, Mater.

There are outputs in form of graph and tables accumulating information directly affecting precision aspects of manufacturing.
To predict the mechanical behaviour of FDM parts, it is critical to understand the material properties of the raw FDM process material, and the effect that FDM build parameters have on anisotropic material properties.
For better orientation of user in process of setting of suitable parameters during the preparation of printing there was algorithm elaborated which accumulates all factors and steps that lead to selection of most suitable variant.
Value of minimal thickness of single layer is conditioned by hardware properties of printer or building material.
Lower settings for density and volume of used basic and support material answer to lower strength and functional properties but present assumption for lowering the cost of 3D printing.

The effect of the amount of liquid crystal on the properties of structure and swelling were conducted.
This material can combine the properties of both, which could improve the properties of poly(hydroxyethyl methacrylate) gel.
The orthogonal experiment of the four factors level [L9(34)] was designed as shown in table 1.
According to the development trend of factors, the influence of different single factors on swelling were investigated for product. 2.5.1 Influencing rule of monomer mass ratio on swelling property.
Although the big liquid crystal molecules were not bibulous, because of the space factors, hydroxyethyl methacrylatethe after absorping water would necessarily affect the original structure of cholesteric liquid crystal phase.

The results indicates that this study can greatly enhance the wear resistance, the corrosion resistance and the fatigue properties etc. of the laser sintering distribution plate parts, having a good guidance to the practical production.
On this basis, a oil distribution disc forming parts of hydraulic piston pump is made , and internal quality of forming parts is observed, and the test of related mechanical properties is carried out.
Choosing genetic algorithm to search the optimum process parameter of the laser sintering oil distribution plate parts contains 5 factors: The coding method, the initial population set, evaluation function as the design of fitness function, design of genetic operation and setting algorithm control parameters[6,7].
At this point, P = 1790.8W, V = 3.4mm / s,G = 60.6r/min,D = 2.1mm,= 1.4mm, the fine organization of the laser sintering layer, porosity, inclusions is greatly reduced, and the rate of the sintering dilution , the width of the heat-affected zone, microhardness and strength and toughness properties are significantly improved, which are conducive to improve the useing performance on the wear resistance, corrosion resistance, fatigue resistance of the oil distribution plate parts [8].
Mechanical optimization design with genetic algorithm.

With the effect of tensile stress cracks appeared, which severely affected the quality of laser cladding layer, greatly limited the application and the popularization of laser cladding technology [1-3].
The microstructure evolution largely determined the macroscopic mechanical properties of the cladding layer [5].
Size of re-crystallization grain and re-crystallization rate, are not only in relevant with primitive grain size and trace elements outside, but also mainly depend on the deformation and such factors as the temperature, strain and strain rate of cooling process.
A friction factor of 0.3 and preheating temperature of 523K were used as input parameters.
Table 2 Mechanical properties Cladding layer(Ni60) Forging head Young’s modulus(MPa) 204×103 Rigid Poisson ratio 0.28 Rigid Coefficient of the thermal expansion(/K) 13.36×10-6 0 Thermal conductivity (N/(s K)) 24.8 45.7 Heat capacity (N/(mm2 K)) 5.9 3.6 Emissivity 0.7 0.7 Fig.1 The FEM model Fig.2 The result of temperature field Fig.3 The result of strain-effective Fig.4 The result of stress-X Fig.5 The result of stress-Y Fig.6 The result of average grain size The finite element model was showed in Fig.1, Fig.2 exhibited temperature field calculation results of cladding layer of micro forging after 5min’s cooling in the air, Fig.3 showed results of equivalent strain field, Fig.4 and Fig.5 showed stress results of X direction and Y direction respectively, Fig.6 revealed the result of average grain size.

During stir casting, there are several critical factors to consider, as stated in Fig. 3.
Several Critical Factors of Stir Casting.
Effect of RHA on mechanical properties of AlMMCs Compositions Mechanical Properties Improvements Ref.
Krishna, Production and mechanical properties of A356. 2 / RHA composites.
Verma, Affect of mechanical properties on groundnut shell ash reinforced Al6063, Int.

Properties of tool materials are improved obviously.
Carbide grain is generally less than 2μm~3μm, so PM HSS has good mechanical properties.
The main AL2O3 composite cutting tool were Al2O3, add small amount of carbide and oxide, which has good mechanical properties.
The Si3N4 composite cutting tool is better than Al2O3 composite cutting tool in mechanical properties.
In addition,it has fine properties such as high thermal stability, good wear-resistance, low friction factor, good chemical stability, mainly processing ferrous material and various kinds of difficult-to-machine materials [13].

To determine final-gauge properties, the microstructural evolution in all process steps needs to be suitably modelled.
Another requirement for TPM is the relationship between final-gauge microstructure and properties.
These properties include mechanical (e.g., ultimate tensile & yield stress, failure strain), corrosion behaviour, and surface appearance and Fig. 2: Evolution of microstructural parameters during casting and homogenisation.
• dispersoid size and number affecting pinning of dislocations and GBs.
Table 3 illustrates the effect of various factors on the post-homogenisation microstructure.

The formulas which allow the calculation of these factors are given in the table 3.
The higher values of these factors KH, KLL, KW, γm and β, prove the better stability.
Delbert, Mechanical properties of bulk metallic glasses, Journal of Non-Crystalline Solids. 21(1976) 343-372
Lakshmipathi, Optical properties of alkaline earth borate glasses, Int.
Singh, Gamma-ray shielding and structural properties of PbO-SiO2 glass, Nucl.