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Online since: February 2003
Authors: Janusz Kwaśniewski, Leszek B. Magalas
The coefficients ( )baC , describe the data both in space and scale; a small scaling parameter corresponds to a compressed wavelet function.
The use of the signal quality test based on the wavelet transform usually leads to a substantial reduction in the scatter of experimental points in the measurements of logarithmic decrement, mechanical loss angle, or mechanical damping in general.
Local irregularities (perturbations) in the strain response signal, although they may not be apparent from the measured total response data, are usually discernible from component wavelets.
Online since: October 2011
Authors: Mariangela Lombardi, Giancarlo Canavese, Stefano Stassi, Candido F. Pirri
However, when a compressive load is applied, the insulating layer between the particles decreases and the fillers form a chain of tunnelling paths: this brings about a large reduction in resistance value.
Considering that for soft materials physical quantities such as resistivity and electric field are not constant throughout the sample, piezoresistive data are presented in terms of the electrical resistance as a function of compressive tension.
For a better clarity of the graph, we have only reported the data related to the composites with nickel filler to polymer ratio of 3.5:1 and 5:1, but the results were similar also for the other samples.
Online since: February 2018
Authors: James M. Ricles, Chinmoy Kolay, Thomas M. Marullo, Safwan Al-Subaihawi, Spencer E. Quiel
., hybrid and real-time) of an RTHS, the accuracy of the simulated response depends on the employed time step size, analytical substructure model, direct integration algorithm, actuator control and many others, such as, data acquisition and proper functioning of equipments.
On the other hand, a reduction in time step size may require a simpler analytical substructure model which may not capture the realistic behaviour of the system, and thus, it can lead to inaccurate results.
The acceleration vector ( ¨Xn+1), however, can be retrieved from an offline simulation using the RTHS data as shown Block 5 of Fig. 1.
Online since: March 2008
Authors: Matteo Benedetti
Comparably, crack growth from lamellar into bimodal microstructure and convergence with crack growth rates of the basic bimodal microstructure can be attributed to a corresponding decrease in roughness of crack front profile (compare Figs. 9b and 9d with the fully bimodal microstructure shown in Fig. 10b) and an accompanied reduction in crack closure and bridging values with increasing crack length (see Table 1).
The data of both long crack and small cracks emanating from notches corrected for the crack closure effects tend to overlap.
Results of the fatigue crack growth rates plotted vs. stress intensity factor range compared with long and small crack data.
Online since: January 2003
Authors: Klaus Hulka
Compared to other materials, such as the light metals aluminum and magnesium or plastics and composites, the higher strength steels have, besides weight reduction, the additional advantages, that the processing is similar to that of conventional mild steel.
The result of this complex situation is shown in figure 3 (3) by tensile test data obtained with the first industrial application of these steels.
A rather small volume fraction of retained austenite was insufficient to promote the TRIP effect with its characteristic high uniform elongation data to occur.
Online since: September 2018
Authors: Maryam Mudasir, Riaz Ahmed
The resultant data is in dark and bright retardation bands and is converted into principal stress differences using a stress optical law [32].
The shoulders of the principal stress difference appearing in the die land for PPNC 0.5% reflected the slow stress relaxation in the downstream section and a reduction in the principal stress difference along the centerline.
The ratio of G (γ, t) / G (t) provided the damping function h (γ) to evaluate the damping coefficient k as an exponential fit to shear rate vs h (γ) data using equation (2) for simple shearing flow.
Online since: November 2015
Authors: Rajkumar Ohdar, Equbal Asif
In one study of U.S-Mexican maquiladora operations, improvements to performance were found in the areas of order cycle time reduction, routing, and scheduling, and effective handling of border crossing of outbound freight.
The methodology proposed is illustrated with the data from a paint industry.
The results of the fuzzy model are then used as input data to a simulation model, aiming to calculate replenishment quantities during a finite planning horizon, and provide the user the assessment of SC performance (delivery performance.
Online since: June 2012
Authors: Holmer Savastano, J.A. Rodrigues, S.F. Santos, G.H.D. Tonoli, A.E.F.S. Almeida
Table 5 Physical and chemical characteristics of the suspension of colloidal silica Bindzil 830Ò* Size range (nm) Specific surface area (m2/g) Density (20 °C) (kg/m3) Stability (20 °C) pH Content of Na2O (%) 8.5 – 9.7 300 1210-1219 9 – 11 0.5 - 0.6 *Data supplied by the producer.
After that, the ampoule with the cement paste and reference one (empty) was put in the respective channels of the isothermal calorimeter and started collecting data.
It was observed different behavior of the cement paste with 10% w/w in the heat flow (Fig. 3a) and accumulative heat (Fig. 3c), as compared to one without colloidal silica. (4) It was noted similar heat flow of the cement paste in the deceleratory period with a gradual reduction in the rate of heat evolution and probably slow reactions, which also gives rise to calcium silicate hydrate (C-S-H) and calcium hydroxide (CH) formation. (5) The same slow stage period was found involving mainly slow reactions of dicalcium silicate hydration, reducing the porosity and increasing mechanical properties [13].
Online since: September 2024
Authors: Artem Ruban, Viktoriya Pasternak, Kyrylo Pasynchuk, Pavlo Polyanskyi
When considering the convergence of the method, careful attention should be paid to stopping criteria, as an incorrect choice can lead to inaccurate results or unnecessary computations); 3) linear or nonlinear behavior (if the material exhibits linear behavior, greater convergence and rapid error reduction can be expected.
Saraf, Data driven tools and methods for microtexture classification and dwell fatigue life prediction in dual phase titanium alloys.
Saraf, Data driven tools and methods for microtexture classification and dwell fatigue life prediction in dual phase titanium alloys.
Online since: May 2015
Authors: Vasant Kearney, Sina Moeendarbari, Rui Qian Jiang, Preston Christensen, Rakesh Tekade, Xian Kai Sun, Wei Hua Mao, Yao Wu Hao, Chien Wen Huang
For the survival curves, each data point represents the average of three independent experiments each plated in quintuplicate.
For the survival curves, each data point represents the average of three independent experiments each repeated in quintuplicate.
In clinical practice, MV X-rays are usually used because the superior penetration of such high energy radiation can give rise to a greater dose uniformity and a reduction in the dose delivered to surrounding healthy tissue.
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