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This has induced a new structure form that has improved mechanical properties.
They found that using raw Diatomite of different sizes in the polyamide 11 biocomposite strongly affects the mechanical properties, such as Young's modulus and flexural strength; these properties are improved.
Mechanical Properties It has been established that the reinforcement of polymeric composites drastically affects the impact strength and tensile behavior.
Both factors, namely the amount of reinforcing filler and the chemical modification, showed a synergistic effect.
Mechanical properties: tensile and impact strength of the composites.

Effect of Water Depth on the Microstructure and Mechanical Properties of SS400 Steel in Underwater Welding YOHANES Peringeten1,a, NURUL Muhayat1,b and TRIYONO1,c* 1Mechanical Engineering Department, Universitas Sebelas Maret, Surakarta, Indonesia ayohanesperingeten@gmail.com, bnurulmuhayat@staff.uns.ac.id, ctriyonomesin@uns.ac.id Keywords: wet underwater welding, water depth, microstructure, mechanical properties.
The electrode coating can be used to control the characterization of underwater MMA welding joints including the mechanical properties and diffusible hydrogen levels [7].
Electric current is one of the dominant factor that affect the quality of welding joints including that of underwater welding.
Based on the above explanation, there are some problems in underwater welding that are important to discuss, including the effects of welding electric current and of water depth on physical and mechanical properties in underwater welding.
This work proposed an investigation on physical and mechanical properties of underwater welding based on the water depth of 2.5 m, 5 m, and 10 m.

For mechanical properties of MMCs to large extent depend on the reinforcement/matrix interface adhesion, which mainly determined by processing conditions, how to select a suitable processing route and detailed processing parameters to achieve strong interface bonding strength, hence satisfactory mechanical properties is a great concern in this field.
Microstructures and mechanical properties of the obtained MMCs were investigated. 2.
Experimental Methods Microstructure observation and mechanical properties test were performed on the SSF/Al composites specimens to study the effect of processing conditions.
Tensile Properties Tensile test was conducted on A-4S-B and A-8S-B.
(3) High strength reinforcement and strong interface adhesion are two indispensable factors for enhancing the strength of SSF/Al composites.

Tool materials and cooling conditions are the major factors to affect wear of drill bits.
The factors of affecting wear of drill bits were discussed, such as tool materials, cooling condition, spindle speed and apex angle.
The factors of affecting wear of drill bits were studied through single factor test.
During machining of fluorophlogopite ceramics, the cooling condi- tion is one of mainly factors to affecting tool wear rate.
The factors of affecting wear of drill bits are tool materials, cooling condition, spindle speed and tool angles.

Based on the above and making use of a complete factorial design 2³, we investigated the individual and interactive effects of three factors that may affect the optimization of the mechanical properties of nanocomposites based in cassava starch having the elastic modulus as response variable.
Three variables associated to the formation of the nanocomposite were considered as factors that could influence the improvement of the mechanical properties of the starch film, being these the contents of cassava starch (A), glycerol (B) and modified clay (C).
Mechanical properties.
Figure 1 shows the Pareto graph showing which of the individual factors analyzed, as well as which interactions between these factors contribute significantly in the optimization of the mechanical properties of cassava starch biofilms.
Conclusion The modified clay was the factor of greater statistical significance on the elastic modulus of the biofilm observed, being the factor that most contributed to the improvement of the mechanical properties of the biofilm.

Comparison between Modelled Influence of GMAW Parameters and Corresponding Mechanical Properties of Group 1 and 2 According to ISO/TR 15608 Steel T Joints Aurel Valentin Bîrdeanu1,a*, Alin Constantin Murariu1,b, Horia Dașcău1,c, Iuliana Duma1,d 1National R & D Institute of Welding and Material Testing - ISIM Timişoara; Address: 30, Mihai Viteazu Blvd., Postal Code 300222, Timisoara, Romania avalentinbirdeanu@yahoo.com, bamurariu@isim.ro, chdascau@isim.ro, diduma@isim.ro Keywords: GMAW, HSLA steel, factorial design, data processing, welding parameters, mechanical properties Abstract.
Figure 1 Joint geometry, s=4 mm, a=5.4 mm, a1=0.3 mm A full factorial experiment, using robot welding, with four influence factors (IF) and three replicas in the center point [19] was designed for the welding trials of the two joints, the values of the selected influence factors (welding current – Ia, welding voltage – Ua, welding speed – vs, free length of the electrode – l) are presented in tables 5 and 6 respectively.
The influence four important process parameters, i.e. the welding current, the welding voltage, the welding speed and the electrode’s free length factors onto the hardness variations in the joint was studied and mathematical correlations were determined.
R.: Studies on welding parameters and prediction of imperfections and mechanical properties in the GMAW process, Welding & Material Testing – BID ISIM, 2 (2019), pp.3-7
Effect of heat treatment temperatures on microstructure and corrosion properties of inconel 625 weld overlay deposited by PTIG.

Thermomechnical processing and controlled rolling of microalloyed steel sheets are affected by several factors according to the final properties of product.
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.
The main goal of hot rolling is to achieve required shape specifications, but careful control of deformation conditions at high temperatures can also have beneficial results in terms of microstructure and hence the mechanical properties [1,2].
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.

So the main feature of this article is the analysis on the natural vibration property, and the evaluation on the drop shock property including amplification factor and relevant curves under nine kinds of repetitive impact with different impact duration and drop height.
So the aim of this study is to analyze the natural vibration property, and evaluate the drop shock property including amplification factor and relevant curves under nine kinds of repetitive impact (different impact durations, different drop heights).
The material properties and dimensions of the radiogram are listed in Table.1.
Table.2 Vibration properties of the radiogram Experimental result Finite element analysis (Hz) Natural frequency (Hz) Transmissibility 185.47 3.09 183.45 (6th) 247.23 7.66 249.31 (10th) Analysis of impact response property Drop shock response of prime component Considering the prime damageable component within the product system, the mechanical model of package article may be simplified into two degrees of freedom including one degree of freedom for the prime damageable component, and the acceleration of prime damageable component () is the product of the excitation acceleration () and the amplification factor () [10] (1) And the amplification factor wound be selected the bigger one from the following calculations (2) (3) Where is the ratio of natural frequency () of main part of package article to the prime damageable component ().
By analyzing and comparing these results and curves, some conclusions may be drawn as follows: (1) the magnitude of amplification factor depends on the ratio of natural frequency of the radiogram to the equivalent frequency of impact load, and it is bigger than 0.5, so the amplification factors in Fig.2 are bigger than one. (2) For the impact duration 2.02ms (nearly causing the resonance of radiogram), and the amplification factor markedly rise more than two even three.

In the actual semi-solid die-casting production, the existence of several uncertain factors can impose an effect on the final product quality, which poses a challenge to semi-solid production.
Especially the existence of the latter can not only reduce the tensile properties but also affect the follow-up heat treatment.
We evaluated the non-filling defects, defect ratio and mechanical properties.
Due to various factors, the slurry of each mold has different viscosity, resulting in differences in filling ability, which affects the density at this stage.
The defect rate of castings affects their tensile properties, so they have the same important influence cases.

As shown in Figure 1, based on the breaking strength of the treated fiber, the effect orders of the three factors were: B > A > C.
Looi, Effects of heat treatment on the mechanical properties of Kevlar-29 fibre, Compos.
Tesoro Giuliana, Effect of surface-limited reactions on the properties of Kevlar fibers, Text.
Zhou, Effect of grafting alkoxysilane on the surface properties of kevlar fiber, Polym.
Morphology and mechanical properties, Polym.