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Machines, Volume 11, Issue 8

August 2023 - 77 articles

Cover Story: The paper proposes a new three-dimensional flexible hinge for precision manipulation and positioning where coverage of a large workspace is necessary. The hinge compact configuration results from serially connecting multiple straight- and circular-axis deformable segments in a folded manner. The analytical compliance model, which factors in the allowable stress, is derived based on a simplified hinge geometry. The model predictions are confirmed via finite element simulation and experimental testing of a prototype with maximum relative errors of around 3%. A steel hinge with an outer radius of 0.05 m and a wire diameter of 0.0035 m generates maximum displacements of 0.08 m and can withstand external forces of 70 N. View this paper
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Articles (77)

  • Article
  • Open Access
13 Citations
2,556 Views
28 Pages

Experimental Study and 3D Optimization of Small-Scale Solar-Powered Radial Turbine Using 3D Printing Technology

  • Ahmed M. Daabo,
  • Ali Abdelhafeez Hassan,
  • Muhammad Anser Bashir,
  • Hudhaifa Hamza,
  • Shahad Salim,
  • Aisha Koprulu,
  • Tawfik Badawy,
  • Saad Mahmoud and
  • Raya Al-Dadah

9 August 2023

Small-Scale Turbines (SSTs) are among the most important energy-extraction-enabling technologies in domestic power production systems. However, owing to centrifugal forces, the high rotating speed of SSTs causes excessive strains in the aerofoil port...

  • Article
  • Open Access
5 Citations
2,464 Views
19 Pages

Improving Efficiency and Power Output of Switched Reluctance Generators through Optimum Operating Parameters

  • Mahmoud Zine,
  • Chouaib Labiod,
  • Malika Ikhlef,
  • Kamel Srairi and
  • Mohamed Benbouzid

9 August 2023

The optimization of energy production in renewable energy systems is crucial to improve energy efficiency. In this context, the aim of this study focuses on maximizing the efficiency of a switched reluctance generator. This paper presents a novel app...

  • Article
  • Open Access
1 Citations
1,490 Views
18 Pages

9 August 2023

Stability and efficiency are the two most important performance indicators of highly loaded aviation axial compressors; however, they often cannot be achieved simultaneously. As an effective means of stability expansion, casing treatment usually dama...

  • Article
  • Open Access
5 Citations
3,284 Views
18 Pages

8 August 2023

Automotive driving simulators are widely used in driving schools and training centers, where they help students acquire the necessary skills without risk to life and health. This paper presents modern research in the field of creating a model and a r...

  • Article
  • Open Access
3 Citations
1,392 Views
22 Pages

Enhancing Small Heat Source Performance through Gravitational Loop Heat Pipes

  • Lucia Martvoňová,
  • Milan Malcho,
  • Jozef Jandačka,
  • Peter Ďurčanský,
  • Michal Holubčík,
  • Július Drozda and
  • Martin Adamička

8 August 2023

This experimental study aimed to validate the integration of a gravitational loop heat pipe (GLHP) with respect to a gas fireplace insert. The GLHP was utilized to enhance the efficiency of the fireplace by preheating the combustion air with waste he...

  • Communication
  • Open Access
1 Citations
2,728 Views
15 Pages

Deceleration of Engine-Braked Motorcycles

  • Piotr Ciępka,
  • Wojciech Wach and
  • Jakub Zębala

8 August 2023

One of the key parameters in the analysis of some motorcycle accident dynamics is the motorcycle’s deceleration during engine braking without applying the brakes. Since this issue lies far beyond what is usually of most interest—the criti...

  • Article
  • Open Access
5 Citations
2,614 Views
18 Pages

7 August 2023

Pulse–width modulated inverters are commonly used to control electrical drives, generating a common mode voltage and current with high–frequency components that excite the parasitic capacitances within electric machines, such as permanent...

  • Article
  • Open Access
2 Citations
2,485 Views
18 Pages

7 August 2023

In recent years, there has been growing attention from the scientific community regarding the environmental impact of commercial goods, pushing companies to adopt life cycle assessment strategies to improve their environmental profile. Only few studi...

  • Article
  • Open Access
5 Citations
4,501 Views
23 Pages

ROBOMINER: Development of a Highly Configurable and Modular Scaled-Down Prototype of a Mining Robot

  • Virgilio Gomez,
  • Miguel Hernando,
  • Esther Aguado,
  • Ricardo Sanz and
  • Claudio Rossi

7 August 2023

Historically, mining operations have faced numerous challenges, including safety hazards, inefficiencies, and environmental concerns. However, recent advances in robotics, automation, and artificial intelligence have presented opportunities for the m...

  • Communication
  • Open Access
5 Citations
2,141 Views
17 Pages

Waypoint Generation in Satellite Images Based on a CNN for Outdoor UGV Navigation

  • Manuel Sánchez,
  • Jesús Morales and
  • Jorge L. Martínez

6 August 2023

Moving on paths or trails present in natural environments makes autonomous navigation of unmanned ground vehicles (UGV) simpler and safer. In this sense, aerial photographs provide a lot of information of wide areas that can be employed to detect pat...

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Machines - ISSN 2075-1702