Gear fatigue life and thermomechanical behavior of novel green and bio-composite materials VS high-performance thermoplastics


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Bravo, A., Toubal, L., Koffi, D. et Erchiqui, F. (2018). Gear fatigue life and thermomechanical behavior of novel green and bio-composite materials VS high-performance thermoplastics. Polymer Testing, 66 . pp. 403-414. ISSN 0142-9418 DOI 10.1016/j.polymertesting.2016.12.031

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In many applications, metal gears have been replaced by plastic gears because of their functionality and cost advantages. Despite their many benefits, the intensive use of plastics and composites raises sustainability issues because of the depletion of non-renewable petroleum resources and the pollution that is generated. Thus, alternative ecological solutions for plastic gears are necessary; however, little is known regarding ecologically designed gears. In this study, we propose two types of innovative gear materials. The first is a semi-ecological polyethylene bio-composite gear reinforced with birch fibers, and the second is a fully bio-sourced natural polyethylene gear with birch fibers. This study is the first time such fully ecological composite-plastic gears have been tested. The tests record the evolution of the fatigue and temperature over time under various operating conditions. Furthermore, acoustic emission is used to assess the evolution of fatigue cracks. The results indicate that the fully ecological gears are feasible and offer an alternative to traditional materials, such as engineering plastics, likely at a lower cost. © 2017 Elsevier Ltd

Type de document: Article
Mots-clés libres: Damage mechanics Fatigue Gear Non-destructive testing Polymer-matrix-composite Cost engineering Ecology Elastomers Fatigue damage Fatigue of materials Gears Nondestructive examination Petroleum deposits Plastics Polyethylenes Polymer matrix composites Reinforced plastics Biocomposite materials Engineering plastics Non destructive testing Petroleum resources Sustainability issues Thermo-mechanical behaviors Traditional materials Acoustic emission testing
Date de dépôt: 03 mars 2022 20:25
Dernière modification: 03 mars 2022 20:25
Version du document déposé: Version officielle de l'éditeur

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