Search results

A forward open cold extrusion process is evaluated to reveal the sensitivity of forming load to numerical factors including number of total degrees of freedom, time step size and mesh size.
The mesh system also strongly affects the finite element solution.
Limit initial radii were obtained for all combinations of the numerical conditions to check the effect of numerical factors on the predictions and are shown in Figure 6.
Effect of Numerical Factors on the Forming Load.
Oyawale, Extrusion die geometry effects on the energy absorbing properties and deformation response of 6063-type Al-Mg-Si aluminum alloy Results, Phys. 3 (2013) 1-6

Refining the microstructure of steel improves its mechanical properties (e.g. toughness).
In this work SAE 52100 specimens were exposed to repeated induction heating process and rotation bending tests were performed using single- and repeatedly heat-treated material in order to investigate the influence of this cyclic heat treatment on the mechanical properties of SAE 52100.
It is therefore of crucial importance to improve the mechanical properties of the material in order to reduce crack initiation and propagation.
The stress intensity factor K1max was calculated by equation shown in Eq. 1.
,UENO.M.: Fine Structures and Mechanical Properties of Thermally Cycled SUJ 2 Steel, ISIJ 75 657-664(1989) [7] KAWASAKI.K.: Micro-structure and Mechanical Properties of Induction Heating Quenched and Tempered Spring Steel,ISIJ73,vol.16,136-143(1987) [8] OCHI.T.: Metallurgy in Microstructure-refining of Steels by Induction Heat treating, ISIJ Ferrum vol12No12 38-42(2007) [9] SANTOS.E.C.

Properties of concrete.
[9] WK Part, M Ramli, CB Cheah, An overview on the influence of various factors on the properties of geopolymer concrete derived from industrial by-products, Constr.
"Mechanical properties of three high-strength concretes containing silica fume." 
"Factors influencing the compressive strength of fly ash-based geopolymer concrete." 
"The effects of fibre on the mechanical properties of aerated concrete."

Fig. 1 SEM micrographs of fractured surface of (a) ABS and (b) 5% MWCNT/ABS nanocomposite The dispersion of MWCNTs directly affects the nanocomposite’s printing ability and other physical properties.
Rheological properties.
Fig. 4 Variation of mechanical properties of ABS and MWCNT/ABS nanocomposites filaments with various MWCNTs content Thermal properties.
For FDM printing, the CLTE of materials is an important factor to affect the dimension of final printed parts.
Murphy, Mechanical and thermal properties of polyphenylene sulfide/multiwalled carbon nanotube composites, J.

It is found that load is the highly influential factor affecting amount of wear, CoF and temperature followed by sliding distance and other factors.
Although thermoset polymers have low tribological properties, fibers, particles and whiskers can enhance the wear performance of composites.
It was found that castor oil fiber termed as ricinus communis, can be used for reinforcing in polymer matrix composites based on chemical, physical, thermal and mechanical properties.
· ANOVA shows that load is the highly influential factor affecting the amount of wear, coefficient of friction and temperature followed by sliding distance and other factors
Velten, Prediction on tribological properties of short fibre composites using artificial neural networks, Wear. 252 (2002) 668–675

This article reports the analysis method of the factors effected bond qualities of fabric composites.
Introduction Interlinings are the key factors in the apparel accessories and play important roles in the garments quality.
Fused materials and bond quality are also the main elements of the factors affecting the quality of clothes.
The size of the adhesive could be easily measured with the development of micro-detection instrument before the experiment.The mechanical properties of the fabrics and fused interlinings were tested in FAST system and KES system.
Conclusions In this paper, we present the principal component analysis .In general, the bond quality is closely related to the material properties under the correct pressing condition.

Factors such as elastic modulus and thickness of NCD film and elastic modulus of interlayer which affect the shear stress distribution of NCD film on cemented carbide substrate were investigated.
However, the variation of contact stress distribution usually accompanies the protection of NCD coating due to the difference in mechanical properties between the coating and the substrate [4].
Factors such as elastic modulus and thickness of NCD film and elastic modulus of interlayer which affect the distribution of the shear stress were investigated.
The mechanical properties of the models were presented in Table 1.
The interlayer is a thin layer formed in the initial period of CVD process which contained WC, graphite and diamond, of which the mechanical properties can be various.

Many stress corrosion crack accidents of ammonia storage tanks have been reported all over the world for recent years. 16MnR low alloy steel with good composite mechanical properties is the most common used pressure vessel steel in China, it has better anticorrosion properties than the low alloy high strength steel, especially in anhydrous ammonia environments.
Three factors are necessary to induce the stress corrosion: sensitive materials, special operating environments and definite stress, they take effects together and affect to each other.
The other is heat treatment factors, if the welds are not heat treated or treat improperly, there will be high residual stress remained in the structures, and it will promote stress corrosion crack. 16MnR low alloy steel with good composite mechanical properties, its strength is lower than that of high-strength steel, but its welding property and plasticity are better, and it is not susceptive to crack, so it is widely used to manufacture pressure vessels.
Chemical composition and mechanical property of the material are given in Table 1 and Table 2.
Table 4 Crack length and stress intensity factors of the specimen No.

The mechanical properties were measured with respect to the strength, hardness and toughness using Universal Testing Machine, Vickers Microhardness, and Charpy method respectively.
The weld-bead geometry produced by arc weld plays an important role in determining the mechanical properties of the weld and its quality [8].
In the year 2007-2011, in Indonesia, the percentage of the factors causing the sea accident by technical is 59 %.
At temperatures above the transition temperature, the weld metal has a ductile properties while at temperatures below the transition temperature of the metal having brittle properties.
Edwards, The influences of addition and interpass temperature on the microstructures and mechanical properties of high strength SMA weld metals, ISIJ Int. 35(10) (1985) 1222-1231.

By changing the CNTs content and powder loading, the viscosity, shear rate sensitive factor and viscos-activation energy were calculated. 0.2wt% of CNTs, the feedstock can disperse in the binders uniformly without the flowability affecting.
Because of some unique properties, carbon nanotubes becomes the most promising materials and has got extensive attention in many fields[3].
Considering of CNTs' excellent properties, we prepared Fe/ CNTs compound powder by ball milling of carbonyl iron powder (about 2µm) with CNTs.
Feedstock and related properties evaluation.
Proper content of CNTs can enhance the homogeneous of feedstock, green strength and mechanical properties.