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Moreover, the mechanical properties and antibacterial properties were measured.
Preparation of antibacterial function PET fibers.The 350dtex/24f*2 of Ag/MWNTs/PET antibacterial function fibers(the ensuing chapters are abbreviated as:antibacterial function PET) were prepared by melt blending spinning-draft one-step method.The spinning speed was 1000m/min.The process as shown in Figure 1.The Ag/MWNTs content in antibacterial function fibers is an important factor affecting the spinnability, mechanical properties and antibacterial properties.If the content of Ag/MWNTs is too low ,it will affect the antimicrobial properties of antibacterial fiber,if the content of Ag/MWNTs is too high, it will cause that the fiber spinning become poor and the mechanical properties decrease.The PET functional masterbatch with 3.0%(wt) content of Ag/MWNTs were selected as spinning masterbatch, Ag/MWNTs/PET antibacterial function fibers (sample A,B and C) were prepared,according to the quality of Ag/MWNTs content(0.2%,0.5% and 1.0%) in the PET-based body,to explore how the content
Mechanical properties of the antibacterial function fibers.The mechanical properties of the samples were tested by the YG (B) 021 semi-automatic tensile instrument.
Table 2 The rheological properties and spinnability of the antibacterial function PET polymer with different Ag/MWNTs content.
Fig.2 The mechanical properties curves of antibacterial functional PET fibers with different content of Ag/MWNTs.

In the FDM process, extruded materials are generally thermoplastic filaments with poor mechanical properties.
To date, in literature, only few studies are focused on mechanical properties of metal parts fabricated via FDM.
Differently, Gong et al. [8] analyzed the mechanical properties of samples fabricated using two different AM techniques.
The impact of the main FDM process parameters on the physical, mechanical and dimensional properties of the produced parts was analyzed and the samples characteristics were compared with monolithic AISI 316L properties.
Tensile properties of 316L FDM samples.

They solidify in columnar structure with large grain size which normally affects their mechanical behavior and surface quality.
In this paper, the effect of addition of Ti on the mechanical properties, ductility and wear resistance of commercially pure aluminum is investigated.
Aluminum and its alloys are the second material in use due to their attractive and useful properties e.g. their high strength-to-weight ratio, thermal and electrical conductivities, resistance to corrosion.
Person : Factors Affecting the Grain Refinement of Aluminum Using Titanium and Boron Additives, Met.
[7] G.P.Jones, J., Pearson: Factors Affecting the Grain Refinement of Aluminum Using Titanium and Boron Additives, met.

Effects of beetle attack on the bending and compression strength properties of pine wood Helena Cruz1, a, José S.
Its effects may generally be considered, either by assuming a reduced cross section or by assuming reduced mechanical properties for the apparent cross section.
Therefore, its effects need be considered [1], either by assuming a reduced cross section or by assuming reduced mechanical properties for the apparent cross section [2].
Taking into account the damage pattern, it seems more logic to assume reduced mechanical properties in proportion to the “diffuse” loss of material, therefore in proportion to the loss of density.
Determination of shear strength and mechanical properties perpendicular to the grain

ORCID 0000-0001-8099-8584 E-mail: doina-cezara.albu@student.tuiasi.ro Keywords: limestone block, compressive strength, water absorption, physical properties, mechanical properties.
The present experimental study aims to contribute to the knowledge of the physical-mechanical properties of limestone blocks quarried in the Republic of Moldova.
This research is significant for the variation of the physical-mechanical properties of Moldovan limestone blocks compared to the same properties of other types of masonry blocks.
Limestone blocks in the Republic of Moldova have been widely quarried since the 50s and 60s of the 20th century, mainly being used for the construction of residential buildings, but we can also find buildings dating back to the 18th-19th century made of this material. (2) The mechanical properties of limestone blocks change over time under the influence of natural and anthropogenic factors.
The physical and mechanical properties of limestone are extremely heterogeneous, but at the same time, these properties depend directly on the structure and texture.

The changes of asphalt properties with service time and depth variations of the pavement were discussed.
Among one of the environmental factors affecting low-temperature cracking is pavement age, and the older the pavement, the greater the incidence of thermal cracking1.
Therefore aging is a main factor affecting the durability of asphalt pavement2-4.
The mechanical properties of pavement structure with gradient modulus are different from those of pavement with constant modulus9.
In this paper, the finite element method was used to analyze the effect of gradient modulus to mechanical properties of asphalt pavement.

The metastable β Ti-6Al-4V alloy has been used clinically as a permanent implant material owing to its suitable mechanical properties and biocompatibility.
There are some factors in considering the selection of alloying elements such as the fabrication method and the resulting mechanical properties.
The alloys produced from the casting method require post-treatment to improve its mechanical properties and to minimize casting defects [1,4,5].
Rozniata, Influence of the ageing temperature on the selected mechanical properties of the Ti6Al7Nb alloy, Key Eng.
Zhao, Effect of microstructure characteristic on mechanical properties and corrosion behavior of new high strength Ti-1300 beta titanium alloy, J.

Microstructural factors that govern the plastic deformation of the long-period stacking ordered (LPSO) phase were clarified.
To clarify the strengthening mechanism of the Mg/LPSO two-phase alloy, we examined the mechanical properties and plastic deformation behavior of the LPSO-phase using the single-phase alloys [9], and found that the (0001) basal slip is the predominant deformation mode.
In this study, we attempt to clarify the microstructural factors that govern the plastic deformation behavior accompanied by the operation of basal slip and by the formation of deformation kink.
The mechanical properties of the alloys were examined by compression tests.
This may be one of the factors that induce a decrease in the k-value in the Hall-Petch relationship and cause a large decrease in yield stress.

The effect of alkalization on the mechanical and physical properties of the composites were determined.
From the results, increase in fiber content and alkali treatment of the fibers improved the mechanical properties of BPC.
The other factors that contribute to the use of alternative materials to wood was that Malaysia is facing ecological issues as there were abundance of agricultural waste.
This leads to poor mechanical properties of the composite when used as structural material.
Development of bamboo-based polymer composites and their mechanical properties.

This paper is focused on the elucidation of mechanical activation effect of circulating fluidized bed combustion fly ash (Amgalan Thermal Station, Mongolia) on mechanical properties of geopolymers.
The aim of the present research is to explore the mechanical activation of fluidized bed fly ash (CFA) on the mechanical properties of geopolymers.
The composition and physical properties of geopolymers.
[8] E.I.Diaz, E.N.Allouche, S.Eklund, Factors affecting the suitability of fly ash as source material for geopolymers, Fuel, 89 (2010) 992-996
[13] S.Kumar, R.Kumar, Mechanical activation of fly ash: Effect on reaction, structure and properties of resulting geopolymer, Ceram.Int. 37 (2011) 533-541