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Evolution of the Working Performance of Special Materials during the Whole Life Cycle

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 3223

Special Issue Editors

School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
Interests: vehicle transmission theory and technology; lubrication and contamination control for transmissions
Special Issues, Collections and Topics in MDPI journals
School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
Interests: materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In engineering applications, the safety, reliability, high efficiency, low consumption and environmental optimization of equipment are important for the development of low-carbon economy. However, the gradual degradation of special materials leads to the gradual change of their dynamic response and thermal load characteristics, resulting in unstable working quality and failure of equipment. Therefore, the monitoring and evaluation of the degradation of special materials is a key issue for high-end equipment in order to achieve reliable operation and healthy service.

The main purpose of this Special Issue on “Evolution of the Working Performance of Special Materials during the Whole Life Cycle” is to find solutions to the difficulties and challenges encountered in the quantification, monitoring and evaluation of the working performance of special materials in the whole life cycle. The research field covers the reviews, principles, and methods of the overall performances of special materials, including formation and preparation processes, whole-life performance monitoring, quantification and evaluation, optimal working condition design, etc. The main contents areas of interest include but are not limited to the manufacturing and processing of composites, the quantitative characterization of micro-morphology and friction coefficient, the identification of material deformation and failure, the evaluation of noise and vibration, oil detection technology for worn materials, numerical simulation and experimental methods for the evaluation of friction-wear, dynamic response, and thermal load characteristics. We welcome the submission of papers on the monitoring, quantification and evaluation of the working performance of special materials in the whole life cycle, with a view to application development.

Prof. Dr. Biao Ma
Dr. Liang Yu
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • special materials
  • friction and wear
  • micro-morphology
  • noise and vibration
  • friction heat and dynamic response
  • experimental methods and simulations

Published Papers (3 papers)

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Research

27 pages, 6729 KiB  
Article
Thermal Contact Response of a Transversely Isotropic Magneto-Electro-Elastic Coating
by Yutang Li, Cenbo Xiong, Qinghua Zhou, Wanyou Yang and Rongsong Yang
Materials 2024, 17(1), 128; https://doi.org/10.3390/ma17010128 - 26 Dec 2023
Viewed by 493
Abstract
The magneto-electro-elastic (MEE) medium is a typical intelligent material with promising application prospects in sensors and transducers, whose thermal contact response is responsible for their sensitivity and stability. An effective thermal contact model between a moving sphere and a coated MEE medium with [...] Read more.
The magneto-electro-elastic (MEE) medium is a typical intelligent material with promising application prospects in sensors and transducers, whose thermal contact response is responsible for their sensitivity and stability. An effective thermal contact model between a moving sphere and a coated MEE medium with transverse isotropy is established via a semi-analytical method (SAM) to explore its thermal contact response. First, a group of frequency response functions for the magneto-electro-thermo-elastic field of a coated medium are derived, assuming that the coating is perfectly bonded to the substrate. Then, with the aid of the discrete convolution–fast Fourier transform algorithm and conjugate gradient method, the contact pressure and heat flux can be determined. Subsequently, the induced elastic, thermal, electric and magnetic fields in the coating and substrate can be obtained via influence coefficients relating the induced field and external loads. With the proposed method, parametric studies on the influence of the sliding velocity and coating property are conducted to investigate the thermal contact behavior and resulting field responses of the MEE material. The sliding velocity and thermal properties of the coating have a significant effect on the thermal contact response of the MEE material; the coupled multi-field response can be controlled by changing the coating thickness between ~0.1 a0 and a0. Full article
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13 pages, 4250 KiB  
Article
Influences of the Contact State between Friction Pairs on the Thermodynamic Characteristics of a Multi-Disc Clutch
by Liang Yu, Changsong Zheng, Liyong Wang, Jianpeng Wu and Ran Jia
Materials 2022, 15(21), 7758; https://doi.org/10.3390/ma15217758 - 03 Nov 2022
Cited by 2 | Viewed by 1182
Abstract
The relationship between clutch thermodynamic characteristics and contact states of friction components is explored numerically and experimentally. The clutch thermodynamic numerical model is developed with consideration of the contact state and oil film between friction pairs. The clutch bench test is conducted to [...] Read more.
The relationship between clutch thermodynamic characteristics and contact states of friction components is explored numerically and experimentally. The clutch thermodynamic numerical model is developed with consideration of the contact state and oil film between friction pairs. The clutch bench test is conducted to verify the variation of the clutch thermodynamic characteristics from the uniform contact (UCS) to the intermittent contact (ICS). The results show that the oil film decreases gradually with increasing temperature; the lubrication state finally changes from hydrodynamic lubrication to dry friction, where the friction coefficient shows an increasing trend before a decrease. Thus, the friction torque in UCS gradually increases after the applied pressure stabilizes. When the contact state changes to ICS, the contact pressure increases suddenly and the oil film decreases rapidly in the local contact area, bringing about a sharp increase in friction torque; subsequently, the circumferential and radial temperature differences of friction components expand dramatically. However, if the contact zone is already in the dry friction state, friction torque declines directly, resulting in clutch failure. The conclusions can potentially be used for online monitoring and fault diagnosis of the clutch. Full article
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12 pages, 7800 KiB  
Article
Comparative Experiment of Abrasion-Corrosion-Sliding Wear Performance of Two Kinds of Low Alloy Wear-Resistant Steel
by Jinrong Chai and Guohua Li
Materials 2022, 15(18), 6463; https://doi.org/10.3390/ma15186463 - 17 Sep 2022
Cited by 1 | Viewed by 1121
Abstract
There is a serious wear problem in the middle plate of scraper conveyors, which causes the problems of high transportation cost, low efficiency, and a lot of material waste. Therefore, it is necessary to study the wear performance of middle plate materials. A [...] Read more.
There is a serious wear problem in the middle plate of scraper conveyors, which causes the problems of high transportation cost, low efficiency, and a lot of material waste. Therefore, it is necessary to study the wear performance of middle plate materials. A new high-titanium low alloy wear-resistant steel (ZM4-13) and a typical material (NM400) for middle plates are studied in this paper. The findings show that the mass loss of ZM4-13 and NM400 rises with the increase of coal gangue percentage. They do not increase monotonically with the change of pH value, and there is a critical value: the critical value of NM400 is between 6–8, and the critical value of ZM4-13 is between 7–9. When the pH value is less than the critical value, the mass loss decreases with the increase of pH value; when the pH value is greater than the critical value, the mass loss increases with the increase of pH value. Under the condition of high gangue and neutral solutions, ZM4-13 has better wear resistance. Its wear resistance can reach up to 1.09–2.10 times compared with NM400. The in-situ precipitated TiC particles are dispersed in ZM4-13. The high hardness of the TiC precipitation area in ZM4-13 hinders the plowing of hard particles and the plastic deformation of surface materials, so ZM4-13 is more wear-resistant than NM400, especially suitable for the harsh working conditions of coal mine production. Full article
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