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Submarine pipeline adopts buried form generally, but under the influence of multiple factors such as large-area seabed scour, soil collapse, soil liquefaction, etc., submarine pipeline can be bare or even occur local suspended span phenomenon.
Based on excellent comprehensive properties of composite pipe, domestic and overseas scholars have successively carried out study on viscoelastic theory for ploymer matrix composite material with various structures, static/quasi-static mechanical response characteristics, structural stability, interface characteristics, etc. [4-7].
From current domestic and overseas study status, there are few studies on the mechanical response of submarine flexible pipe.
As flexibility of submarine flexible pipe, internal pressure and local suspended span under the action of wave-current hydrodynamic forces, which is the main factor causing the failure of submarine flexible pipeline?
When submarine pipeline can be regarded as small objects that can not affect the original flow field pattern, scattering effect and free surface effect can be ignored.

Investigation of synchronization properties of PM machines with fractional slot concentrated windings Georgy B.
The present work investigates the effect of three parameters (load torque, the total moment of inertia of the motor loaded and the moment (phase) of power-up) on the synchronization properties of the machine.
The key factors for self-start of the machine are the moment of inertia of the system "motor- load", the moment of mechanical resistance and the moment of power-up.
In other words, the mechanical torque on the motor shaft is described by the function Mω=β∙ω2 (2) The coefficient β ranged from 4·10-4 to 3·10-3 Nм·s2, that corresponds to the parameters of commercial fan wheels designed for ventilation.
The design of the motor has a potential for reducing the moment of inertia that can positively affect the self-starting possibilities.

But in practice, the measure precision affected by multiple factors, such as the thermal expansion of cavity, the sedimentary water film or salt deposit in cavity, the sampling error, etc.
Calculate the water and steam thermodynamic properties using IAPWS-IF97 [5-6]
The properties of water and water vapor [M].
General calculating models of water and steam properties(IAPWS-IF97)[J].POWER ENGINEERING, 2001,21（6）：1564-1567
Study on dielectric properties of wet steam in turbine [J].

Table 2 Test arrangement Specimen number C-1~C-6 C-0 C-25~C-85 Mechanical test Measure the mechanical property No Load to 25%, 40%, 55%, 70% or 85% of the compressive strength, respectively Temperature response test No Yes Yes Moisture transport test No Yes Yes Temperature Response Tests.
Fardis, Physical and chemical characteristics affecting the durability of concrete, ACI Mater.
Harmathy, Thermal properties of concrete at elevated temperature, J.
Allen, Thermal properties of selected masonry unit concretes, ACI J.
Khan, Factors affecting the thermal properties of concrete and applicability of its prediction models, Build.

However, keep in mind that the oxidation stability of biodiesel is affected by various factors, such as alkyl ester composition, the presence of antioxidants, and storage conditions [28].
However, there are other factors such as unsaturated fatty acid content that also need to be considered.
Rahill, “Alternative Fuels Data Center Fuel Properties Comparison.”
Kumaresan, “Effects of the properties and the structural configurations of fatty acid methyl esters on the properties of biodiesel fuel: A review,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, vol. 229, no. 3.
Yunus, “Factors Affecting the Cold Flow Behaviour of Biodiesel and Methods for Improvement-A Review Dielectrophoretic Separation and Sensor View project Development of technology for producing slow release urea View project.”

Depending on steel grade, rolling schedule and other processing parameters, the final microstructure and mechanical properties are predicted.
pearlite colony size Rod rolling wire drawing drawing speed Figure 1: Main influencing factors and processes on the microstructure and corresponding mechanical properties during rod rolling and wire drawing In a second step, plant data were evaluated by multivariate statistics.
In this stage, it was of interest, how materials and processing variables contribute to the final scatter of the mechanical properties.
Meanwhile a variety of steel grades are now produced by thermo-mechanical rolling with improved properties for cold heading usage.
As a consequence of that, the scatter in the mechanical properties could be drastically reduced.

Moreover, it had also affected by physic factors, namely bulk density, fiber size thickness, porosity, airflow resistivity, tortuosity, and air gap spacing [4].
The samples coding and properties of composites were detailed in Table 1.
Seddeq, “Factors Influencing Acoustic Performance of Sound Absorptive Materials,” Aust.
Arnaud, “Acoustical properties of materials made of vegetable particles with several scales of porosity,” Appl.
Ren, “Study on sound absorption property of ramie fiber reinforced poly (l-lactic acid) composites: Morphology and properties,” Compos.

Current collection performance is one of the key factors of railway speed-up.
The WVD has better time-frequency resolution than the STFT, but despite its remarkable properties, WVD has limited applications because it contains interference terms.
The Gabor shaping factor affects the time-frequency localization of the GWT.
Finally, the optimal Gabor shaping factors of the signals were found to be 4.2 and 4.9, respectively.
As expected, the optimal Gabor shaping factors were less than 4.2 or 4.9.

Due to positive response to age hardening treatment there is an improvement in the mechanical properties of Al6061 alloy & its hybrid composite.
Poovazhagan et al [4] reported that addition of SiC & B4C resulted in increase in hardness & better tensile properties.
This results in large internal stresses and mismatch strain that affect the microstructure and mechanical properties of the composites.
· Al6061 alloy and Al6061-B4C-SiC hybrid composites positively responds to age hardening treatment with considerable improvement in mechanical properties
· Al6061-3%B4C-3%SiC hybrid composite exhibits superior mechanical properties in comparison with Al6061 alloy, Al6061-1%B4C-5%SiC and Al6061-2%B4C-4%SiC composites.

It has also some advantages such as short product cycles, high quality part surfaces, good mechanical properties, low cost and light weight, so it is becoming increasingly more significant in today’s plastic production industries.
In experimental design, there are many variable factors that affect the functional characteristics of the product.
Design parameter values that minimize the effect of noise factors on the product’s quality are determined.
A high value of S/N implies that the signal is much higher than the random effects of the noise factors.
Melt temperature (factor A) followed by Packing Pressure (factor C) were the most dominating factors.