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Online since: June 2015
Authors: R.H. Gubaidulina, S.I. Petrushin, S.V. Gruby
As these data significantly interest designer and manufacturer of the product a special service responsible for put-back and disposal of over-aging machine is to be established at mechanical engineering enterprises.
It is the data that make it possible to precise the regularities of physical depreciation of the product, therefore, determine the economically estimated lifetime, and a planned price of the product.
It is drawn attention to the fact that reducing price of the product causes reduction of its “economically substantiated lifetime” (see the dashed line in Fig.1), that is, a cheap product is to have shorter optimal lifetime.
The maximum profit will be calculated according to (9) as follows: (10) Fig.3 Influence of the obsolescence period of the machine and the cycle time on the profit of the enterprise Formula (10) and Fig. 3 demonstrate that the maximum increment in profit of the mechanical engineering enterprise is related to the reduction of cycle time of the machine, that is, to the transition to the mass fast-changeable production.
Online since: September 2013
Authors: Jean Luc Béchade, Yann de Carlan, Louise Toualbi, Sophie Bosonnet, Olivier Castelnau
Six cold rolling passes are conducted with a cross-section reduction ratio of about 25% for each pass.
XRD data were obtained using a Bruker-D8-Discover device with Cu-Kα radiation, Polycap focusing optic and 1 mm collimator to reduce beam size, ¼ circle Eulerian cradle and a scintillator as point detector.
The standard “sin²Y method” has been used to interpret XRD data; it relies on several assumptions, i.e. homogeneous and isotropic material, linear elastic behavior, biaxial stress state for which only sxx, sxy, and syy, are non-vanishing, and vanishing residual stresses at the grain scale (so-called second order stresses).
Macroscopic and XRD determinations show the strong effect of the heat treatment (reduction of stress along axial and circumferential direction) but stresses levels are significantly different between the two techniques: this can be understood taking into account the fact that XRD brings more local residual stresses analysis.
Online since: December 2024
Authors: Saad Saud Ali Shah, Noor Ali, Zeeshan Habib, Sana Taimoor, Nasir Mehboob, Fazal Ur Rehman
For data storage purpose magnetic materials have high demand in electronic industry [1].
V=0.866a2c (3) Theoretical X-ray density of the samples is calculated by using the XRD data with the help of following relation [12]: ρx=n MwNaV (4) Where n is the number of atoms per unit cell, Mw is the molecular weight calculated from composition, V is the volume of the unit cell and Na is Avogadro's number.
This reduction is c-axis of crystal structure also confirms that Ca+2 ions are successfully substituted in crystal structure and replaced Sr+2 ions.
An increase in calcium concentration leads to a reduction in the intensity of the main peaks and also a peak shift towards the right, indicating the formation of the nonmagnetic α-Fe2O3 phase.
Online since: October 2023
Authors: Suchismita Satapathy, Manas R Das, Lalit K Pothal
In fact, after the effects of air pollution, some World Health Organization (WHO) data indicate that noise is the second-largest environmental cause of health issues.
The common discussion ,conversation One of the greatest building materials for noise reduction is brick.
After that, in order to calculate the sound absorption and noise reduction coefficient, all the data obtained is transferred into a tabular format.
Online since: June 2016
Authors: Prapita Thanarak, Kornkamol Laung-Iem
However, there are consumer and industry advantages that are unrelated to regulatory requirements, such as price reduction.
Research Methodology In order to examine the research problem, a retrospective cross-sectional approach was used, with analysis of data over six years (2009 to 2014).
Data was collected on a quarterly frequency.
Thus, if production costs could be reduced, this could also result in a reduction in biodiesel prices.
Online since: January 2021
Authors: Evgeny V. Naydenkin, Il'ya V. Ratochka, Olga Lykova, Ivan P. Mishin, Anna I. Manisheva
Also the heat-up time was reduced in proportion to the reduction in the diameter of the rod.
The reduction ratio was about 3.3 (true strain ~1.2).
In this case, the volume fraction of the α phase according to X-ray diffraction data in the center and on the periphery of the rod is about 10%, respectively (Fig. 3), whereas in the initial state this value reached 58% [3].
Phase diagrams, crystallographic and thermodynamic data, Ed. in Chief: W.
Online since: March 2007
Authors: Cristina Rodríguez, F.Javier Belzunce, Enrique Real, A. Fernández Canteli
The last two stands of this mill respectively provide 27.5% and 19% reductions, the last one also producing the shaping of the external rib.
The wire is then corrugated and its diameter reduced to 12 mm by cold rolling (the final area reduction is approximately 15%).
Since the accuracy obtained from the statistical analysis of the tests results depends not only on the amount of available data, but also on the choice of the right stress ranges, these stress ranges were provisionally set, but later modified according to the obtained results.
Analysis and representation of fatigue data.
Online since: November 2005
Authors: Toshiro Kobayashi, Hiroyuki Toda, Mitsuo Niinomi, Tomomi Ohgaki, Kentaro Uesugi, Yasuhiro Aruga, Toshikazu Akahori, Koichi Makii
Pentagonal facetted iso-intensity surfaces were computed from the volumetric data set for 3D image analyses with sub-voxel accuracy.
Fig. 3 A 3D rendered perspective view of tomographic data, representing micro-pore distribution superposed on the surface contour of a cell wall.
This work was performed as part of the research programme "Processing Technology Development of Aluminium for Automobile Weight Reduction" supported by NEDO.
Develop. of Al. for Automobile Weight Reduction, (NEDO, Japan 2004), to be published [3] U.
Online since: January 2006
Authors: Martijn Stroeven, Piet Stroeven, J. Hu
As a result, very significant portions of the PC could be replaced by RHA without strength reduction.
Data on the effects of variations in the particle size distribution (PSD) on the compaction efficiency (and thus on strength) are more readily available on millimeter level, and can thus be employed for reference purposes.
Data on PSD for the coarse aggregate used in their experiments are approximated as much as possible and denoted as 'recycled' series in this simulation study (size range 4-16 mm).
Finally, the mixture of sand and coarse aggregate is subjected in the gravitation field during size reduction of the container to the aforementioned dynamic mixing algorithm until the ultimate volume fraction of total aggregate is 65 % for all the investigated mixtures.
Online since: August 2018
Authors: Leandro Bolzoni, Fei Yang, Carlos Romero Villarreal
Quantitative data from the microstructure, such as α phase content, was obtained using image analysis (IA), with the software Image-J [14].
While the reduction in strength is attributed to the coarser lamellae, the fact that the ductility is not improved may be attributed to the thicker grain-boundary α of this condition.
In the case of the two solution treatments and aging, there is a considerable increase in the yield strength with a slight reduction in ductility.
These data were used, together with the tensile results, to identify trends in the properties in regards to the phase composition (Fig. 4).
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