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Machines, Volume 12, Issue 5

May 2024 - 71 articles

Cover Story: Even the most advanced railroad systems can be adversely affected by something as basic as fallen leaves on tracks. Leaf contamination poses a recurring challenge for railway operators, leading to decreased braking efficiency and potentially hazardous events like station overruns. By better comprehending how leaves reduce adhesion, this research aims to enhance railroad engineering practices and mitigate the adverse impact of leaves on train braking and traction. Using the high-precision Virginia Tech-Federal Railroad Administration (VT-FRA) Roller Rig, this study examines the decrease in traction and braking forces, known collectively as "adhesion," in relation to leaf volume. The results indicate that even small amounts of leaves can cause a large decrease in adhesion. View this paper
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Articles (71)

  • Article
  • Open Access
2 Citations
2,365 Views
22 Pages

In industry, forecast prediction and health management (PHM) is used to improve system reliability and efficiency. In PHM, remaining useful life (RUL) prediction plays a key role in preventing machine failures and reducing operating costs, especially...

  • Article
  • Open Access
1,535 Views
23 Pages

In the manufacturing sector, tool wear substantially affects product quality and production efficiency. While traditional sequential deep learning models can handle time-series tasks, their neglect of complex temporal relationships in time-series dat...

  • Article
  • Open Access
2 Citations
1,887 Views
25 Pages

Based on a multi-source error model, this paper discusses the principle of error element identification and uses the mirror bias method to compensate the geometric errors of a process system. Firstly, a nine-line measurement method to determine the g...

  • Review
  • Open Access
6 Citations
2,824 Views
19 Pages

State-of-the-Art Lightweight Implementation Methods in Electrical Machines

  • Han Zhao,
  • Jing Li,
  • Xiaochen Zhang,
  • Bin Xiong,
  • Chenyi Zhao,
  • Yixiao Ruan,
  • Huanran Wang,
  • Jing Zhang,
  • Zhouwei Lan and
  • Xiaoyan Huang
  • + 1 author

The demand for high-power density motors has been increasing due to their remarkable output capability and compact construction. To achieve a significant improvement in motor power density, lightweight design methods have been recognized as an effect...

  • Article
  • Open Access
1,301 Views
20 Pages

Natural Characteristics of a Marine Two-Stage Tandem Hybrid Planetary System

  • Xingfu Zhao,
  • Zongxiang Yue,
  • Jianjun Qu,
  • Marmysh Dzianis and
  • Yanzhong Wang

This study focuses on a marine two-stage tandem hybrid planetary system. Natural frequencies and vibration modes are determined using a translational–torsional coupled dynamic model. Based on the motion characteristics of the transmission syste...

  • Article
  • Open Access
11 Citations
2,723 Views
22 Pages

Consensus Tracking Control of Multiple Unmanned Aerial Vehicles Subject to Distinct Unknown Delays

  • Sandy-Natalie Campos-Martínez,
  • Omar Hernández-González,
  • María-Eusebia Guerrero-Sánchez,
  • Guillermo Valencia-Palomo,
  • Boubekeur Targui and
  • Francisco-Ronay López-Estrada

This article deals with the consensus tracking problem for multi-agent systems (MAS) under the influence of unknown time-varying delays. Each agent of the MAS is a quadrotor unmanned aerial vehicle (UAV) represented as a linear continuous-time system...

  • Article
  • Open Access
3 Citations
1,396 Views
24 Pages

Systematic Development of a Novel Laser-Sintering Machine with Roving Integration and Sustainability Evaluation

  • Michael Baranowski,
  • Johannes Scholz,
  • Florian Kößler and
  • Jürgen Fleischer

Incorporating continuous carbon fibre-reinforced polymer (CCFRP) parts within additive manufacturing processes presents a significant advancement in the fabrication of robust lightweight parts, particularly relevant to aerospace, engineering, and var...

  • Article
  • Open Access
10 Citations
3,611 Views
21 Pages

Multi-Response Optimization of Electrochemical Machining Parameters for Inconel 718 via RSM and MOGA-ANN

  • Subhadeep Saha,
  • Arpan Kumar Mondal,
  • Robert Čep,
  • Hillol Joardar,
  • Barun Haldar,
  • Ajay Kumar,
  • Naser A. Alsalah and
  • Sabbah Ataya

Inconel 718’s exceptional strength and corrosion resistance make it a versatile superalloy widely adopted in diverse industries, attesting to its reliability. Electrochemical machining (ECM) further enhances its suitability for intricate part f...

  • Article
  • Open Access
2 Citations
2,257 Views
20 Pages

Railway signals’ fault text data contain a substantial amount of expert maintenance experience. Extracting valuable information from these fault text data can enhance the efficiency of fault diagnosis for signal equipment, thereby contributing...

  • Article
  • Open Access
4 Citations
1,826 Views
14 Pages

Failure mode and effects analysis (FMEA) helps to identify the weak points in the processing, manufacturing, and assembly of products and plays an important role in improving product reliability. To address the shortcomings of the existing FMEA metho...

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Machines - ISSN 2075-1702