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An Analysis of the Tribological and Thermal Performance of PVDF Gears in Correlation with Wear Mechanisms and Failure Modes Under Different Load Conditions

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dc.abstract.enWith engineering plastics increasingly replacing traditional materials in various drive and control gear systems across numerous industrial sectors, material selection for any gearwheel critically impacts its mechanical and thermal properties. This paper investigates the engagement of steel and Polyvinylidene Fluoride (PVDF) gear pairs tested under several load conditions to determine polymer gears’ characteristic service life and failure modes. Furthermore, recognizing that the application of polymer gears is limited by insufficient data on their temperature-dependent mechanical properties, this study establishes a correlation between the tribological contact, meshing temperatures, and wear coefficients of PVDF gears. The results demonstrate that the flank surface wear of the PVDF gears is directly proportional to the temperature and load level of the tested gears. Several distinct load-induced failure modes have been detected and categorized into three groups: abrasive wear resulting from the hardness disparity between the engaging surfaces, thermal failure caused by heat accumulation at higher load levels, and tooth fracture occurring due to stiffness changes induced by the compromised tooth cross-section after numerous operating cycles at a specific wear rate.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Obrabiarek i Podstaw Konstrukcji Maszyn
dc.contributor.authorMuratović, Enis
dc.contributor.authorMuminović, Adis J.
dc.contributor.authorGierz, Łukasz
dc.contributor.authorSmailov, Ilyas
dc.contributor.authorSydor, Maciej
dc.contributor.authorDelić, Muamer
dc.date.access2025-09-03
dc.date.accessioned2025-09-03T05:59:56Z
dc.date.available2025-09-03T05:59:56Z
dc.date.copyright2025-07-09
dc.date.issued2025
dc.description.abstract<jats:sec> <jats:title content-type="abstract-subheading">Purpose</jats:title> <jats:p>Current furniture design principles fail to keep pace with the global rise in obesity. This study aims to address this issue by proposing a novel methodology for manufacturing cost estimation of common-use chairs that can accommodate even severely obese individuals.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Design/methodology/approach</jats:title> <jats:p>The approach prioritizes universal design principles and user safety while ensuring furniture producers’ economic viability. This study utilizes real-world data to determine the establish appropriate load capacity for common-use chairs. Empirical height and weight data were collected from 7,938 young Slovakian men (aged 18–25) between 2001 and 2023. Additionally, data on Slovakia’s bariatric population, encompassing all genders, were obtained from medical facilities (2020–2024).</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Findings</jats:title> <jats:p>Considering the 95<jats:sup>th</jats:sup> percentile weight among bariatric individuals, the authors factored in a 20% design safety margin. This resulted in a target load capacity of 230 kg for all chairs designed for common use – a significant increase from the standard 110 kg capacity. An essential contribution of this study is a method for estimating chair production cost based on its designed load capacity. This method’s calculations reveal that the redesigned chair is estimated to cost 11.6% more than a standard chair. However, considering its ability to cater to broader user needs, this price point remains competitive.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Practical implications</jats:title> <jats:p>The research indicates that the standard load capacity of common-use chairs should be substantially increased to accommodate the growing obese population. The study offers a methodology for estimating the cost implications of designing chairs with a higher load capacity, enabling manufacturers to assess the economic feasibility of implementing such changes.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Social implications</jats:title> <jats:p>Chairs with higher load capacities improve accessibility for individuals with obesity, promoting their participation in social and professional activities. By accommodating individuals of all sizes, these chairs reduce the risk of falls, injuries and other problems associated with poorly fitting furniture.</jats:p> </jats:sec> <jats:sec> <jats:title content-type="abstract-subheading">Originality/value</jats:title> <jats:p>This study links universal design, safety and affordability. The authors used real data from Slovakia to find the right weight limit for these chairs. The study addresses the pressing issue of furniture design failing to keep pace with rising obesity rates. The method helps make chairs that are accessible to everyone. While these chairs cost a bit more, they are affordable considering their expanded user base. The study’s originality lies in its novel methodology and data-driven approach, while its value lies in its potential to address a significant societal issue.</jats:p> </jats:sec>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if2,8
dc.description.number7
dc.description.points100
dc.description.versionfinal_published
dc.description.volume15
dc.identifier.doi10.3390/coatings15070800
dc.identifier.issn2079-6412
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/4595
dc.identifier.weblinkhttps://www.mdpi.com/2079-6412/15/7/800
dc.languageen
dc.pbn.affiliationforestry
dc.relation.ispartofCoatings
dc.relation.pagesart. 800
dc.rightsCC-BY
dc.sciencecloudsend
dc.share.typeOPEN_JOURNAL
dc.subject.enlifespan
dc.subject.enlifetime
dc.subject.enfailure modes
dc.subject.entribological contact
dc.subject.enmeshing temperature
dc.subject.enwear coefficients
dc.subject.enabrasive wear
dc.subject.enthermal failure
dc.subject.entooth fracture
dc.titleAn Analysis of the Tribological and Thermal Performance of PVDF Gears in Correlation with Wear Mechanisms and Failure Modes Under Different Load Conditions
dc.title.volumeSpecial Issue Microstructure, Friction and Wear, Hardness Properties and Numerical Simulation of Coatings
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue7
oaire.citation.volume15