Fatigue Damage and Fracture Analysis of Aerospace Metal Materials

A special issue of Aerospace (ISSN 2226-4310).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1388

Special Issue Editor


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Guest Editor
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
Interests: damage mechanics; finite element analysis; mechanics of materials; solid mechanics; mechanical behavior of materials; failure analysis; plasticity; finite element modeling; fatigue of materials; fatigue; fracture analysis
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Dear Colleagues,

This Special Issue seeks to delve into the advanced study of how aerospace-grade metals withstand the unique stresses and environmental conditions encountered during flight and space missions. Aerospace materials are required to perform reliably under high fatigue and immense pressures, making it critically important to understand their failure mechanisms both for safety and technological advancement. We invite researchers to submit original research articles, reviews, and technical notes that explore the intricate behaviors of metals under cyclic stress and the subsequent onset of fractures. Topics of interest include microscopic and macroscopic failure analyses, stress and strain assessments, crack propagation studies, and the influence of environmental factors such as temperature and corrosion on a material’s performance. Contributions may also include innovative approaches to improving material design, predictive modeling of life expectancy, and new methodologies for detecting and analyzing material defects. This Special Issue aims to gather groundbreaking research that can contribute to safer, more efficient aerospace designs and operations.

Dr. Zhixin Zhan
Guest Editor

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Keywords

  • aerospace materials
  • fatigue damage
  • crack propagation
  • environmental effects
  • microstructural analysis
  • fatigue life prediction
  • non-destructive testing
  • computational modeling
  • advanced material design

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Published Papers (1 paper)

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Research

27 pages, 13646 KiB  
Article
Chatter and Surface Waviness Analysis in Oerlikon Face Hobbing of Spiral Bevel Gears
by Jingchao Wang, Jun Qian, Kaifeng Huang, Zhentao Shang and Jianwu Yu
Aerospace 2024, 11(7), 535; https://doi.org/10.3390/aerospace11070535 - 28 Jun 2024
Viewed by 1119
Abstract
A vectorized analytical model for the cutting dynamics in the spiral bevel gear face hobbing process has been developed, which is based on machine tool kinematics and vibration vectorization. The structural modal parameters of the cutter head spindle system are obtained through experimental [...] Read more.
A vectorized analytical model for the cutting dynamics in the spiral bevel gear face hobbing process has been developed, which is based on machine tool kinematics and vibration vectorization. The structural modal parameters of the cutter head spindle system are obtained through experimental modal analysis with hammer impact testing. The analytical model is utilized to simulate the generation of simulated vibration acceleration signals during spiral bevel gear hobbing. A wavelet threshold denoising method is applied to process the simulated vibration signals of the spiral bevel gear face hobbing with added white noise. Signal processing methods, including short-time Fourier transform are employed for time-domain analysis, frequency-domain analysis, and time–frequency-domain analysis of measured signals and simulated signals, thereby extracting the corresponding statistical features. In addition to the results of the experimental modal analysis, the causes of chatter in spiral bevel gear hobbing are discussed in detail, revealing that the main factor is cutter head vibration in the Y direction of the Hunan ZDCY CNC EQUIPMENT YKA2260 machine tool used in this research. The error in the time-domain characteristic parameters between simulated signals and measured vibration acceleration signals is within 15%, with a difference of 3.5% in spectral peak values. The predicted tooth surface morphology from simulation matches the actual morphology on the workpiece, comprehensively validating the reliability of the cutting dynamics model for the spiral bevel gear face hobbing process. Another conclusion drawn from numerical simulation experiments is that the amount of tooth surface waviness of the spiral bevel gears is the ratio of tool chatter frequency to cutting fundamental frequency. Full article
(This article belongs to the Special Issue Fatigue Damage and Fracture Analysis of Aerospace Metal Materials)
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