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Machines, Volume 9, Issue 10

October 2021 - 40 articles

Cover Story: Early-stage fatigue damage detection in metal components is critical to ensure reliability and facilitate predictive maintenance. This article uses novel experiments and introduces a combined pattern recognition and machine learning approach to detect fatigue cracks at the micron-scale. In summary, the article opens future opportunities for designing a robust predictive maintenance framework. View this paper
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Articles (40)

  • Article
  • Open Access
3 Citations
2,632 Views
19 Pages

Vibrodiagnostics Faults Classification for the Safety Enhancement of Industrial Machinery

  • Daniel Zuth,
  • Petr Blecha,
  • Tomas Marada,
  • Rostislav Huzlik,
  • Jiri Tuma,
  • Karla Maradova and
  • Vojtech Frkal

30 September 2021

The current digitization of industrial processes is leading to the development of smart machines and smart applications in the field of engineering technologies. The basis is an advanced sensor system that monitors selected characteristic values of t...

  • Article
  • Open Access
18 Citations
3,731 Views
24 Pages

Gear Teeth Deflection Model for Spur Gears: Proposal of a 3D Nonlinear and Non-Hertzian Approach

  • Fabio Bruzzone,
  • Tommaso Maggi,
  • Claudio Marcellini and
  • Carlo Rosso

30 September 2021

In this paper, a three-dimensional model for the estimation of the deflections, load sharing attributes, and contact conditions will be presented for pairs of meshing teeth in a spur gear transmission. A nonlinear iterative approach based on a semi-a...

  • Article
  • Open Access
9 Citations
5,390 Views
15 Pages

Design and Analysis of a Lower Limb Rehabilitation Training Component for Bedridden Stroke Patients

  • Xusheng Wang,
  • Yongfei Feng,
  • Jiazhong Zhang,
  • Yungui Li,
  • Jianye Niu,
  • Yandong Yang and
  • Hongbo Wang

30 September 2021

Carrying out the immediate rehabilitation interventional therapy will better improve the curative effect of rehabilitation therapy, after the condition of bedridden stroke patients becomes stable. A new lower limb rehabilitation training module, as a...

  • Article
  • Open Access
7 Citations
3,330 Views
21 Pages

29 September 2021

The optimization process of compressors is usually regarded as a ‘black-box’ problem, in which the mathematical form underlying the relationship between design parameters and the design objective is impractical and costly to be obtained. To solve the...

  • Article
  • Open Access
22 Citations
4,853 Views
25 Pages

29 September 2021

In the context of Industry 4.0, the matrix production developed by KUKA robotics represents a revolutionary solution for flexible manufacturing systems. Because of the adaptable and flexible manufacturing and material handling solutions, the design a...

  • Article
  • Open Access
18 Citations
5,599 Views
22 Pages

PSIC-Net: Pixel-Wise Segmentation and Image-Wise Classification Network for Surface Defects

  • Linjian Lei,
  • Shengli Sun,
  • Yue Zhang,
  • Huikai Liu and
  • Wenjun Xu

29 September 2021

Recent years have witnessed the widespread research of the surface defect detection technology based on machine vision, which has spawned various effective detection methods. In particular, the rise of deep learning has allowed the surface defect det...

  • Article
  • Open Access
15 Citations
4,145 Views
16 Pages

Model-Free Predictive Current Control of Synchronous Reluctance Motor Drives for Pump Applications

  • Ismaele Diego De Martin,
  • Dario Pasqualotto,
  • Fabio Tinazzi and
  • Mauro Zigliotto

28 September 2021

Climate changes and the lack of running water across vast territories require the massive use of pumping systems, often powered by solar energy sources. In this context, simple drives with high-efficiency motors can be expected to take hold. It is im...

  • Article
  • Open Access
9 Citations
3,098 Views
17 Pages

Bayesian Optimization Design of Inlet Volute for Supercritical Carbon Dioxide Radial-Flow Turbine

  • Chao Bian,
  • Shaojie Zhang,
  • Jinguang Yang,
  • Haitao Liu,
  • Feng Zhao and
  • Xiaofang Wang

28 September 2021

The radial-flow turbine, a key component of the supercritical CO2 (S-CO2) Brayton cycle, has a significant impact on the cycle efficiency. The inlet volute is an important flow component that introduces working fluid into the centripetal turbine. In-...

  • Communication
  • Open Access
37 Citations
6,082 Views
12 Pages

Continuous Control of an Underground Loader Using Deep Reinforcement Learning

  • Sofi Backman,
  • Daniel Lindmark,
  • Kenneth Bodin,
  • Martin Servin,
  • Joakim Mörk and
  • Håkan Löfgren

27 September 2021

The reinforcement learning control of an underground loader was investigated in a simulated environment by using a multi-agent deep neural network approach. At the start of each loading cycle, one agent selects the dig position from a depth camera im...

  • Article
  • Open Access
9 Citations
3,135 Views
16 Pages

26 September 2021

Measurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback contro...

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Machines - ISSN 2075-1702