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1 – 3 of 3Antonio Cotroneo, Giovanni Vozzi, Luigi Gerovasi and Danilo De Rossi
Over the last few years, there has been considerable interest in developing autonomous robots that are able to move in constrained environments, inspired by the motion of lower…
Abstract
Over the last few years, there has been considerable interest in developing autonomous robots that are able to move in constrained environments, inspired by the motion of lower animal forms such as parasites, worms, insects and even snakes and eels. In this paper, we describe a new design and concept of autonomous microrobot based on senseless motion. The “senseless motion” is the movement in absence of an external perception system. In a lot of living species, rhythmic movements, finalized to locomotion, are produced by oscillating circuits in the central nervous system. We reproduced this motion using a voice‐coil actuator embedded with its control hardware in a cylinder presents on its external surface a skate‐like structure produces a differential friction in order to move the robot on different substrates. Preliminary experiments have been carried out on several materials in order to measure the frictional forces produced by the robot during its motion and to verify the repeatability of senseless motion.
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Ibrahim Yavuz and Abdulkadir Yildirim
The purpose of this article covers the design and manufacture of porous materials that can be used in different engineering applications by additive manufacturing.
Abstract
Purpose
The purpose of this article covers the design and manufacture of porous materials that can be used in different engineering applications by additive manufacturing.
Design/methodology/approach
The most important design parameters of the porous materials are the cell structure and wall thickness. These two design criteria are difficult to control in porous materials produced by conventional production methods. In the study, two different wall thicknesses and four different pore diameters of the porous structure were determined as design parameters.
Findings
A compression test was applied to the produced samples. Also, the densities of the produced samples were compared. As a result of the study, changes in mechanical properties were observed according to the cell wall thickness and pore size.
Originality/value
The originality of the study is that, unlike traditional porous structure production, the pore structure and cell wall thicknesses can be produced in desired dimensions. In addition, a closed pore structure was tried to be produced in the study. Studies in the literature generally have a tube-type pore structure.
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