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Dynamic Mechanical Thermal Properties of a New Metal/Polymer Composite for Fused Deposition Modelling Process W.Q.
This paper introduces an entirely new metal based composite material for direct rapid tooling application using Fused Deposition Modelling rapid prototyping system with desired mechanical and thermal properties and characteristics.
Details of preparation of metal-polymer composites and their tensile properties have been published previously [6].
Dynamic Mechanical Thermal Analysis Dynamic Mechanical Thermal Analysis (DMTA) provides information about the changes in mechanical properties of polymers due to changes in temperature [8].
Summary This paper has shown how the filler particle addition affects the dynamic mechanical thermal properties of metal-filled polymer composites developed for Fused Deposition Modelling RP process.

There are many factors to affect the torque transfer of magnetic powder clutch.
As the working medium of the transmit torque for magnetic powder clutch, magnetic powder is one of the main factors to affect the magnetic powder clutch working characteristics.
Field method is a fine analysis method for magnetic field which considers the reluctance, magnetic flux leakage, edge effect, eddy current losses and other factors.
Chemical composition of the material is the primary factor to determine the magnetic property of magnetic powder.
The bulk density of the magnetic powder is another factor to influence the magnetic properties of magnetic powder.

The main factors and factors interaction that affected to surface finish were investigated.
Because of carbon composition between 0.4-0.8 % that it can be improved property especially hardness of material for proper use to mechanical part and cutting tools.
In previous study, factors of milling can be affected to quality of surface such as feed, speed, depth of cut, cutting tool, mechanical load, thermal load, and abrasive load.
It means that both of factors was affected to surface roughness.
However, ANOVA showed that depth of cut could be affecting to surface roughness.

The specific properties that affect welding are; high affinity to oxidation, oxide characteristic, the solubility of hydrogen in molten aluminum, and wide range of mechanical properties and melting temperatures that result from alloying with other metals.
Therefore, the selection of the proper welding process parameters is very essential for obtaining optimal mechanical properties.
In this work Taguchi method with grey relational analysis has been applied to find the optimal weld bead geometry and mechanical properties of 2219 Aluminum alloy.
The experimental design proposed by Taguchi involves using LN(kn) OA (where N represent the number of experimental run, n is the numbers of parameters/factors and k is the number of levels) to organize the parameters affecting the process and the levels at which they should be varied.
The selection of the OA depends on the number of studied factors and the number of levels for each factor.

Three factors must be considered when considering printability via extrusion bioprinting: viscosity, material phase, and biofabrication window.
Mechanical properties data obtain from Testometer Universal Testing Machine for samples (4, 5, 6).
Traditionally, soybean resin was only printed using a stereolithography (SLA) three-dimensional printer, and this printing method involves the use of heating and laser, which can degrade and affect the mechanical properties of the materials.
Additionally, when the properties of two cubic injected samples with 0.5 ml of soybean oil resin are compared, slight differences can be seen due to a variety of factors, one of which is that we used a syringe pump to inject the resin, which is subject to some variation above and below +/- 0.5 ml injected volume.
However, when mechanical parameters are compared before and after injection, we observe an improvement in mechanical properties.

The reliability of adhesive in the connection during the life time of a structure is affected by many factors, [1], [2], [3], [4].
Five types of adhesives with different mechanical properties were chosen into research, and they were applied in glass-to-metal (steel, stainless steel, aluminum) and glass-to-glass connections.
Secondly, one complex model of the adhesive was created with assumption that, close to adhesive-substrate interface there is a contact zone with tougher mechanical properties than in the rest of adhesive.
Numerical models responding different mechanical properties of adhesives and changes in glue thickness were developed.
Eliášová, Influence of various factors on mechanical properties of adhesive joint in glass structures, In: Challenging Glass 3: Conference on Architectural and Structural Applications of Glass, CGC 2012, pp. 267-279 [4] V.

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.

The Effect of Double Pass GMAW Process on Microstructure and Mechanical Properties of AA 6061-T6 Joining Plates S.R.S.
Rapid cooling of the first pass and moderate cooling rate for the second pass during weld metal solidification eventually resulted in significantly change the shape and size in the microstructure that had affected the hardness and mechanical properties.
Hence, this present research is aimed at studying and determining any changes in microstructure shape or size that relate to their mechanical properties.
Properties and selection, nonferrous alloy and pure metals.
Joining. 8, p. 269 – 281 [8] Othman, N.K., Bakar, S.R.S., Jalar,A., Syarif,J., Ahmad, M.Y., (2010), The Effect of Filler Metals on Mechanical Properties of 6 mm AA 6061-T6 Welded Joints Adv.

These are caused by environmental factors such as exposure to high temperatures or direct sunlight, and contact with chemicals.
Oxidation badly affects the mechanical properties of the polymers such as reducing the tensile strength, harming the impact capacity and deteriorating the toughness rather than the fracture resistance.
We do not add other additives like stabilizers or antioxidants for uv or others because adding more antioxidants or stabilizers may badly affect the mechanical properties or other properties like producing cracks and fractures.  
The tests include mechanical properties testing, fracture properties testing, and thermal properties testing.
It will reduce or prevent the cracks and increase the mechanical (such as tensile strength, hardness), fracture properties (such as fracture toughness, crack propagation, crack initiation, crack branching,…) and thermal properties (such as linear thermal expansion factor, thermal conductivity factor, and specific heat capacity).

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.