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Combined effect of new type of cellulose fibers and reclaimed asphalt on performance characteristics of stone mastic asphalt mix
Published in Alphose Zingoni, Insights and Innovations in Structural Engineering, Mechanics and Computation, 2016
Pavla Vacková, Jan Valentin, Petr Mondschein
From the point of view of the behavior in the range of low temperatures, use of RAP has a possible impact not only on thermal sensitivity, but also on the development of stress during the loading of the asphalt mixture. It can be seen (Fig. 4) that mixtures with RAP have higher fracture toughness at the higher test temperature (0 °C), nevertheless standard asphalt mixtures usually evince better results at lower temperatures (−10 °C). All mixtures without RAP corroborate with this assumption. If PPA has been added to the bitumen fracture toughness steeply decreased by almost 30% in comparison to control mix. Generally the increasing amount of RAP causes decrease in fracture toughness.
Design optimisation for a novel underactuated robotic finger by genetic algorithms
Published in Australian Journal of Mechanical Engineering, 2022
Ihsan A. Baqer, Wafa Abd Soud, Mohammed R. Ahmed
Figures 8(a–c) evince the distribution of normal force according to the joint angles (θ12, θ23). The results showed that the all normal forces (f1, f2 and f3) are positive, because the proposed design of the index finger was based on the curvature of the index finger of Otto bock hand, the initial values of the 2nd and 3rd joint angles were (20°), and the effective range of joint angles was (30°–90°). All this helped to increase the efficiency of the grasping process. And, it is increasing with increase joint angle (θ12 & θ23). Compared with a previous work reported in Ref. (Nacy, Hassan, and Bakhy 2009) which has a limited range of stable grasp, the aforementioned results show a stable grasp (positive contact force) with all the working joints angles.
Non- oil bleed two-part silicone dispensable thermal gap filler with Al2O3 and AlN filler for effective heat dissipation in electronics packaging
Published in The Journal of Adhesion, 2022
Vigneshwarram Kumaresan, Srimala Sreekantan, Mutharasu Devarajan, Khairudin Bin Mohamed
Table 6 shows dielectric loss of A (AO87AlN6), B (AO75AlN18) and C (AO62AlN31) dispensable gap filler evince 0.0306, 0.0272 and 0.0108 at 1 MHz and dielectric loss decreases with an increase in AlN particles. The negative dielectric losses in a dispensable thermal gap filler A (AO87AlN6) indicate that more energy has been emitted than absorbed at 1 GHz frequency.[40] The results signify that the addition of AlN could increase the dielectric constant and suppress the dielectric loss of dispensable thermal gap filler.
Carbon-based innovative materials for nuclear physics applications (CIMA), INFN project
Published in Radiation Effects and Defects in Solids, 2021
L. Torrisi, L. Silipigni, L. Calcagno, M. Cutroneo, A. Torrisi
Results indicate that the dosimeter response, bonded to the level of reduction, depends on the radiation LET (liner energy transfer, keV/µm), in fact it is possible to evince that at the same absorbed dose of 50 MGy the C/O atomic ratio is about 4.3 for ion dose (particles having high LET) and about 1.7 for electron dose (particles having low LET).