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JournalISSN: 1734-4492

International Journal of Applied Mechanics and Engineering 

De Gruyter Open
About: International Journal of Applied Mechanics and Engineering is an academic journal published by De Gruyter Open. The journal publishes majorly in the area(s): Porous medium & Heat transfer. It has an ISSN identifier of 1734-4492. It is also open access. Over the lifetime, 1482 publications have been published receiving 6105 citations. The journal is also known as: IJAME.


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Journal Article
TL;DR: In this article, a similarity analysis is presented to investigate the unsteady boundary layers over a stretching sheet for special distributions of the stretching velocity and surface temperature or surface heat flux.
Abstract: A similarity analysis is presented to investigate the unsteady boundary layers over a stretching sheet for special distributions of the stretching velocity and surface temperature or surface heat flux. The governing unsteady boundary layer equations are reduced to ordinary differential equations with two parameters, the Prandtl number and the unsteadiness parameter. These equations are solved numerically for some values of the governing parameters using the Keller-box method. Some flow and heat transfer characteristics are determined and discussed in detail.

142 citations

Journal Article
TL;DR: Although the gold alloy had the best wear property, the 4% Cu in Ti-6Al-4V alloy exhibited the best results among the titanium metals.
Abstract: After using cast titanium prostheses in clinical dental practice, severe wear of titanium teeth has been observed. This in vitro study evaluated the wear behavior of teeth made with several cast titanium alloys containing copper (CP Ti+3.0 wt% Cu; CP Ti+5.0 wt% Cu; Ti-6Al-4V +1.0 wt% Cu; Ti-6Al-4V+4.0 wt% Cu) and compared the results with those for commercially pure (CP) titanium, Ti-6Al-4V, and gold alloy. Wear testing was performed by repeatedly grinding upper and lower teeth under flowing water in an experimental testing apparatus. Wear resistance was assessed as volume loss (mm(3)) at 5kgf (grinding force) after 50,000 strokes. Greater wear was found for the six types of titanium than for the gold alloy. The wear resistance of the experimental CP Ti+Cu and Ti-6Al-4V+Cu alloys was better than that of CP titanium and Ti-6Al-4V, respectively. Although the gold alloy had the best wear property, the 4% Cu in Ti-6Al-4V alloy exhibited the best results among the titanium metals. Alloying with copper, which introduced the alpha Ti/Ti(2)Cu eutectoid, seemed to improve the wear resistance.

85 citations

Journal Article
TL;DR: In this paper, the location of the greatest elastic di stress in spherical and cylindrical Hertzian contacts based upon the distortion energy and the maximum shear stress theories was determined and fitted by empirical formulations for a wide range of the Poisson ratio.
Abstract: 1. ABSTRACT This work determines the location of the greatest elastic di stress in spherical and cylindrical Hertzian contacts based upon the distortion energy and the maximum shear stress theories. The ratios between the maximum pressure, the von Mises stress, and the maximum shear stress ar e determined and fitted by empirical formulations for a wide range of the Poisson ratio, which represents materia l compressibility. Some similarities exist between cylindrical and spherical contacts, where for many metallic m aterials the maximum von Mises or shear stresses emerge beneath the surface. However, in cylindrical contact i f ny of the materials is excessively compressible then the maximum von Mises stress appears at the surface. The cor responding Poisson ratios are found. The critical forces that cause yielding onset, and the corresponding interferenc es a d radius or half-width contact are derived along with the maximum stored strain energy. It is shown that the distressing stresses decrease as Poisson’s ratio increases (i.e., as the material approaches incompressibility) . The results obtained herein are then used to calibrate FEA meshes intended for cases that do not have closed-form solutions.

79 citations

Journal Article
TL;DR: The thermal boundary layer on an exponentially stretching continuous surface with an exponential temperature distribution in the presence of the magnetic field effect is investigated numerically in this paper, where the local similarity solution is applied to the governing equations.
Abstract: The thermal boundary layer on an exponentially stretching continuous surface with an exponential temperature distribution in the presence of the magnetic field effect is investigated numerically. The local similarity solution is applied to the governing equations. Comparisons with previously published work are made and the results are found to be in excellent agreement. Numerical results for temperature distribution and the local Nusselt number have been presented for different values of the governing parameters. In particular, it has been found that the magnetic field decreases the temperature difference at the wall of the stretching surface, while the Nusselt number decreases with it.

71 citations

Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
202321
202260
202145
202060
201959
201860