METODE PENINGKATAN KETAHANAN RETAK RESIN POLYESTER DENGAN PENAMBAHAN PROSENTASE VINYL ESTER
Rekayasa MesinIn previous studies, hybrid crash boxes have been developed because it show better energy absorption characteristics. Circular hybrid crash box combine the advantages of low-density of composite with stable deformation of metal provide a potential energy
Nusyirwan Nusyirwan +2 more
doaj +1 more source
Mechanical and tribological properties of FFF 3D-printed polymers: A brief review [PDF]
Jurnal Tribologi, 2021 In fused filament fabrication (FFF); the process of 3D printing using polymer-based materials; specialised and functional parts are designed and manufactured for use in engineering and medical industries.
Mohamad Nordin Mohamad Norani +5 more
doaj
Differential Spiral Joint Mechanism for Coupled Variable Stiffness Actuation [PDF]
arXiv, 2023 In this study, we present the Differential Spiral Joint (DSJ) mechanism for variable stiffness actuation in tendon-driven robots. The DSJ mechanism semi-decouples the modulation of position and mechanical stiffness, allowing independent trajectory tracking in different parameter space. Past studies show that increasing the mechanical stiffness achieves
arxiv
Cactus Mechanisms: Optimal Differential Privacy Mechanisms in the Large-Composition Regime [PDF]
arXiv, 2022 Most differential privacy mechanisms are applied (i.e., composed) numerous times on sensitive data. We study the design of optimal differential privacy mechanisms in the limit of a large number of compositions. As a consequence of the law of large numbers, in this regime the best privacy mechanism is the one that minimizes the Kullback-Leibler ...
arxiv
Local Priority Mechanisms [PDF]
arXiv, 2023 We introduce a novel family of mechanisms for constrained allocation problems which we call local priority mechanisms. These mechanisms are parameterized by a function which assigns a set of agents, the local compromisers, to every infeasible allocation. The mechanism then greedily attempts to match agents with their top choices. Whenever it reaches an
arxiv
Incorporation of aluminum oxide in the formulation of pastes for building materials
Dyna, 2018 This work analyzes the influence of aluminum oxide with a particle size of less than 75 μm on the behavior in a clay, when it is mixed with this material at 10% by weight. It is observed how it influences the different stages of the manufacturing process
Luis Miguel Carrillo-Rodriguez +3 more
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Recycling Carrot Powder as Mortar for Cement Replacement [PDF]
Engineering and Technology Journal, 2015 This study was carried out to investigate the physical and mechanical properties of mortar cement produced from Carrot Powder (CP) . To do this, 4 mortar cement specimens were formed by changing the weight of CP and cement.
Aseel Basim Al-Zubaidi
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Topology-optimization based design of multi-degree-of-freedom compliant mechanisms (mechanisms with multiple pseudo-mobility) [PDF]
arXiv, 2021 Unlike conventional mechanisms, compliant mechanisms produce the desired deformations by exploiting elastic strain and do not need, therefore, moving parts. The number of degrees of freedom of a conventional mechanism, also called mobility, is the number of independent coordinates needed to define a configuration of the mechanism.
arxiv
Boron Monochalcogenides; Stable and Strong Two-Dimensional Wide Band-Gap Semiconductors
Energies, 2018 In this short communication, we conducted first-principles calculations to explore the stability of boron monochalcogenides (BX, X = S, Se or Te), as a new class of two-dimensional (2D) materials.
Bohayra Mortazavi, Timon Rabczuk
doaj +1 more source
A Study of Some Mechanical, Thermal and Physical Properties of Polymer Blend with Iraqi Kaolin Filler [PDF]
Engineering and Technology Journal, 2011 In the present work, polymer blends were fabricated by mixing two polymers of polypropylene and poly (methyl methacrylate) mixed in different weight percentage and different particle size of Iraqi kaolin.
Najat J. Saleh, Samir Nassaf Mustafa
doaj +1 more source