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One of the environmental factors that can influence the onset of fatigue is noise exposure.
Result Blibiometric Analysis., A useful tool for doing a quantitative analysis of a particular research subject is provided by bibliometrics, This research method takes into account the bibliometric properties of a research publication.
Of the 28 articles that were selected using a two-factor factorial experiment, the influencing factors and response variables were studied, including the influencing factors in the form of noise levels and noise sources and the observed response variables in the form of changes in the EEG signal on attention, mental workload and stress[22,6,23].Studies using EEG to examine how noise affects cognitive function.
Experimental research constrained variables are solely brought about by free variables and not by other factors.
Affect.

To predict and analyze accurately the lubrication characteristics and its influencing factors of main bearing for large low-speed two-stroke marine diesel engine, based on EHD lubrication model of dynamically loaded bearing, coupling simulation between EHD and MBD for main bearing of marine diesel engine was carried out.
In recent years, coupling simulations between EHD and nonlinear MBD were carried out to dynamically-loaded main bearing of diesel engine, some results were achieved by considering operating conditions, oil properties, surface morphology, elastic deformation of crankshaft journal and bearings et al[1-4].
(1) Where, Φx and Φz are pressure flow factor at x and z direction; Φs is shear flow factor; is mean fill ratio; is mean(expected) pressure; η is oil viscosity; h is nominal clearance height between journal and bearing; is average clearance height; u1 and u2 are circumferential velocity of the journal and bearing surface; σs is the composite height standard deviation, , σ1 and σ2 are standard deviation of clearance height at journal and bearing surface; t is time; x and z are coordinates in circumferential and axial direction.
Through the comparative analysis, considersing full shafting, the lubrication characteristics of the last main bearing, i.e., No.8 main bearing, were affected significantly.
Proceedings of the Institution of Mechanical Engineers, 1970, 185:625–634.

It is also necessary to take into account that preservative treatment may affect the strength and stiffness properties of wood.
It is possible to determine wood density and even the related mechanical properties based on the input of the depth of the pin penetration [1].
Wood density is determined by several factors, e.g. cell diameter and cell wall thickness, proportions of earlywood and latewood, cellulose and lignin content etc.
Density has a significant influence on mechanical properties of wood and can be evaluated by penetration of an indenter [2].
The obtained data can approximate the mechanical properties of wood quite well, but much experience is needed to evaluate it in the right way.

The morphology and properties of the nanofibres fabricated by electrospinning are affected by various factors such as applied voltage, collector distance, feed rate and intrinsic properties of the polymer and solvent [7].
Wadsworth, Effects of melt-blowing process conditions on morphological and mechanical properties of polypropylene webs.
Ko, Melt-electrospinning part I: processing parameters and geometric properties.
Yao, Processing properties of polypropylene with a minor addition of silicone oil.
[20] Ryan, K.J., et al., Ultra high molecular weight functional siloxane additives in polymers: effects on processing and properties.

Solvothermal Synthesis, Photocatalytic and Electrochemical Properties of Flower-Like TiO2 with Hierarchical Structures Shanghua Tana, Gongqin Yanb*, Zhaojin Luanc, Dongyan Yud, Junhua Luoe School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, 545616, Guangxi, P.R.
A large number of studies have shown that the properties of titanium dioxide are affected by its morphology, structure and size.
The catalytic and electrochemical properties of the hierarchical structures were studied.
In general, the reduction/oxidation peak is correlated with electrochemical activity, but the change in the peak depends on many factors, such as the electrical conductivity or the polarization of materials [20].
Tang, et al, Synthesis and properties of TiO2 hollow microspheres, J.

A considerable disadvantage of Al-Li alloys is a significant anisotropy of mechanical properties and a sensitivity to long-term low temperature heating [2], resulting in a poor performance of destruction mechanics of fracture properties.
To explain this effect consider the effect of the L12-ordered δ' phase on the anisotropy of the properties of the alloy.
Kolobnev, Aluminum–Lithium Alloys: Structure and Properties, Naukova Dumka, Kiev, 1992 [in Russian]
Effect of orientation on the mechanical properties and crystallographic texture of 2195, Aluminum-Lithium alloy.
Rostova, Texture and anisotropy of mechanical properties of the alloy Al-Mg-Li-Zn-Sc, Metally. № 5 (2008) 57-65.

Given the complexity of possible scenarios, which can depend on numerous factors, the assumed M-H case represents a plausible sequence of events: the considered scenario represents the situation in which an earthquake determines damages to the structure to the extent of causing a fire to break out in one of its compartments (usually where technical installations are located): the fire blazes in a structure already damaged by the main seismic event and, as it frequently happens, the structure could be affected by minor aftershocks, thus impacting a structure damaged by both hazards (i.e., earthquake and fire).
This issue received more attention following the events that occurred in Japan in 2011 [3, 4]: studies [5, 6] have highlighted how factors of mechanical nature (degradation of the material), geometric (increase in stress due to irreversible deformations) and damage to non-structural components determine a reduction in structural resistance.
For sake of brevity, for detailed information regarding the physical (i.e., thermal expansion, specific heat, thermal conductivity, …) and mechanical properties (i.e., constitutive law) of steel under fire, the reader is addressed to proven references [11], [13], [14]; however, some aspects are here recalled: high temperatures induce a dual phenomenon in steel [15], resulting in both a decrease in capacity (due to the degradation of material properties at high temperatures) and an increase in demand (due to the significant thermal deformations of elements subjected to heating, causing distortions and additional stresses).
(a) Stress-strain relationship for carbon steel at elevated temperatures; (b) reduction factors for the stress-strain relationship of carbon steel at elevated temperature [15].
Due to the softening of the material and the consequent reduction of the mechanical properties, the M-N domain reduces itself, allowing the possibility of the so-called early plasticization.

Stress relaxation behavior was found to be an important factor for investigating formability affected by modifying the slide motion.
Although many attempts are being made to bring out their characteristic features for enhancing the formability of high-strength steel sheets and some of them have been successful in determining the advantages of servo presses for improving formability and dimensional accuracy [1,2], the mechanisms of such improvements have yet to be clarified in conjunction with the mechanical properties of the materials used.
The necking, which is a typical defect dominated by the work hardening property of the material, was observed at the punch shoulder, as shown in Fig. 6.
Groche, Mechanical servo press technology for metal forming, CIRP Annals - Manufact.

Fillers have also been widely used with the most commeon thermoset polymer, epoxy molding compound (EMC), in electronics packaging in order to enhance the roughness and hardness properties.
However, effect of filler sizes on the electronic package processability, mechanical and functional properties are less reported in literature.
Effects of molding process parameters on the gate chip off formation were investigated based on four factors with three levels and one response using DOE using only the normal filler in the molding compound.
From the term of significance analysis, none of the factors are having significance influence on the response.
Therefore, the four factors derived (transfer time, transfer pressure, mold die temperature, and curing time) in the regression model do not have any significant influence on the response (the gates chip off formation).

One of the keys to the success of 3D printing lies in the wide range of materials available, offering different physical and mechanical properties to suit various applications.
Comparison of Physical Properties of Materials.
Table 1 shows the comparison of these properties among the selected materials.
Comparison of important properties of the materials for prototype performance.
Factors like time and temperature weren't considered, focusing solely on load-bearing capabilities.