Search results

The energy based techniques rely on the attenuation property of AE signals on different equipments [2].
Network model of LS-SVR There are two free parameters viz. kernel width parameter, sigma and regularization parameter, which affect LS-SVR generalization performance.
It is a factor, which is less than 0.5.
Mechanical Systems and Signal Processing. vol 21, Feb 2007, pp.1103-1114
Journal of Mechanical Engineering Science. vol 223, Jan 2009, pp. 525-529

Modification of epoxidised soybean oil For modification of epoxidised soybean oil, ESO, a solution of ESO about 0.6 mol and ,glacial acrylic acid 2.5mol were placed in a 500ml four neck round flask equipped with mechanical stirrer, thermometer, and reflux condenser.
In this equation da/dt is the rate of mass loss, a is the fraction of material reacted, n is the reaction order, E is the Arrhenius activation energy (J/mole), T is the temperature (K), R is a constant (8.314 J/mole K) and A is the pre exponential factor (sec -1).
Ea increase with higher conversion stages, which shows thermostability is affected upon heating process.
As for pre-exponential factor, ln Z seems to vary slightly with percent conversion for both systems.
Soo Jin Park,Fan-Long Jin,Jae-Rock Lee,Thermal and Mechanical properties of tetrafunctional epoxy resin toughened with epoxidised soybean oil, Materials Sciences and engineering A 374, pp. 109-114, 2004

Influence of Axis Configuration in 5-Axis Control Machining Center on Geometric Error of Cubic Machined Surfaces Yuno Maeda1,a*, Shigehiko Sakamoto2,b , Hideharu Kato2,c , Ryuta Sato3,d and Yukitoshi Ihara4,e 1Graduate School of Engineering, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusan, Ishikawa 924-0838, Japan 2Department of Mechanical Engineering, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusan, Ishikawa 924-0838, Japan 3Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan 4Department of Mechanical Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan ac1052097@planet.kanazawa-it.ac.jp, bsak@neptune.kanazawa-it.ac.jp, chkato@neptune.kanazawa-it.ac.jp, dryuta.sato@mae.nagoya-u.ac.jp, eyukitoshi.ihara@oit.ac.jp Keywords: 5-Axis Machining Centers, Cubic-Machining, Structure Error, Form-Shaping-Theory, Mechanical Structure Abstract.
However, static and dynamic error factors affect the machining process in actual machining, (a) Cubic-machinig (c) Top surface on the cube (e) Side surfece on the cube (b) Cubic-machining (d) Top surface sections (f) Side surfece sections on the 5-axis MC Fig. 1 Surfaces on the machined cube and the nine surfaces created as the machined surface will have height differences as machining errors.
Rotating the rotational axis B-axis to change the tool posture changes the orientation of each error factor relative to the workpiece coordinate system.
(3) Tool posture has only a small effect on the machined surface properties, and it is possible to measure the height difference between each machined surface.

Introduction One-dimensional (1D) nanotubes, nanowires and nanofibers have been extensively explored due to their unique physical and chemical properties and potential applications in nanoscale devices [1,2].
Humidity is another factor to influence the surface morphology of electrospun fibers.
However, the fiber morphology is less affected by the spinning distance, beaded fibers mixed with uniform fibers are obtained in all the cases.
In the present case, the repeated bends in Fig.4 that have characteristic repeat distance of several (or a few tens of) microns are typical of the mechanical buckling features.
The formation mechanism of helical and wavelike fibers can be ascribed to mechanical jet buckling and/or electrical driven bending instability.

The specific goal for the work reported here is to examine the effect of the pore structure of the polymeric adsorbents on adsorptive properties toward MB.
The polarity and pore size distribution of polymer adsorbents are also the important factors affecting adsorption.
If the pore diameter is too small, diffusion of adsorbate from the aqueous phase to the pores of the adsorbent will be hindered, thus affects the adsorption in a negative way.
Sheldon, Coagulation and precipitation of a mechanical pulping effluent-I.
Eiji, et al., Preparation of activated fibrous carbon from phenolic fabric and its molecular sieving properties.

If this TM steel is applied in hot-stamped automotive parts, it is likely that the mechanical properties of the parts will be affected by the cooling rate after hot-stamping, because the retained austenite characteristics and the matrix structure are controlled by the cooling rate.
In addition, the relationship between these impact properties and the metallurgical characteristics was determined.
The impact properties were evaluated by determining the upper-shelf Charpy impact absorbed value (US-CIAVs) and the FATTs of the specimens.
Tensile Properties.
Figure 5 shows the tensile properties of the TM steels for various post-austenitization cooling rates.

Frame elements, descriptive of decks and piers, were modeled assuming a generic section defining the mechanical parameters according to the actual geometry.
In particular, in the case of retrofit with seismic isolation the link is Friction Isolator [12,13] that allows to relate the shear response to the frictional properties, the radius of curvature and the axial stress on the device.
In the following tables are shown the mechanical properties of the supports considered in the models (Table 1, Table 2, Table 3): Table 1.
Current state - Mechanical characteristics of elastomeric bearings Fzd (kN) Ko (kN/mm) Kv (kN/mm) 1250 3,43 1114 Table 2.
In particular, the dynamic response of the piers heavily affects the seismic response also in the retrofitted conditions.

Interpolation Techniques in Computational Particle Tracking Inside a Direct-Injection Diesel Engine Cylinder Lok Bee Seng1,a, Muhammad AhmarZuber1,b, Wan Mohd Faizal Wan Mahmood1,2,c, Zulkhairi Zainol Abidin1,2,d and Zambri Harun1,2,e 1Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia 2Centre for Automotive Research, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia abichen1989@hotmail.com, bahmarzuber@yahoo.com, cwmfaizal@eng.ukm.my, dzza@eng.ukm.my, ezambri@eng.ukm.my Keywords: Soot, particle tracking, interpolation, trilinear, radial basis function.
Movement of soot particles are examined through the selection factors of particle's initial coordinate (r,Ɵ,z) and soot concentration level at different instant crack angle.
It has been used widely nowadays in automotive field since it has a better fuel efficiency property compared to gasoline engine but it has drawback such as the formation of soot and other pollutants [1].
It happens since interpolation technique computes its result which is affected by the parameter value on the previous time-step where RBF and trilinear interpolation takes on the different value on the related parameter.
By knowing the properties and movement tendency of soot particles, solution to minimize or even control the tendency of soot particles to stick on cylinder wall will have a higher successful probability.

The experiments were conducted in a laboratory of Mechanical Engineering Dept of Petra Christian University, Surabaya, Indonesia.
Fo is the collector heat gain factor.
If the optical properties of the SAH, (ta), are known, then Fo and UL can be determined.
The radiation received on the absorber plate and the air flow rate crossing the SAH affect the rise of air temperature as shown in Fig. 2.
The heat loss coefficient and heat gain factor of SAH with many configurations.

Table 1 Properties of soil used in this study.
These products are little affected by heavy metals.
Binder content can also affect strength of the stabilized soil.
By laboratory tests, the strength characteristics, the heavy metals species distribution and micro-structural properties of KMP treated contaminated soils are examined.
Pulppara, Engineering properties and microstructural characteristics of cement solidified zinc-contaminated kaolin clay, Can.