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Document Type:	Artigo
Title:	Polyamide worm gear: manufacturing and performance
Authors:	Gasparin, Alexandre Luís Corso, Leandro Luís Tentardini, Eduardo Kirinus Nunes, Regina Célia Reis Forte, Maria Madalena de Camargo Oliveira, Ricardo Vinicius Bof de
Issue Date:	2012
Resumo :	The focus of this paper is to establish a characterisation method for seven polyamide (PA) grades to determine the major material to manufacture an automotive worm gear. The composite properties were measured according to the worm gear loadings: tensile strength, Young’s modulus, abrasion and impact resistance. They were also correlated to the PA moisture absorption and its glass fibre (GF) reinforcement. The data from mechanical tests were applied in the finite element analysis (FEA) using the von Mises stress criterion. Before the rig tests of the PA worm gears, the injection process was evaluated, through the capillary rheometry. A higher difficulty to process PA 6/6 30% GF was found, due to its lower apparent viscosity. In the end, the influence of moisture absorption was as decisive to the gear’s material selection as the GF to the pinion. Thus, the PAs with the best performance were: PA 6 with 30% GF (gear) and with PA 60% GF (pinion).
Keywords:	Polyamide composites Worm gear Material performance
ISSN:	1980-5373
Is part of:	Materials Research
Language:	eng
Publisher / Institution :	Departamento de Engenharia de Materiais/Laboratório de Materiais Vítreos da Universidade Federal de São Carlos
Citation:	GASPARINI, A. L. et al. Polyamide worm gear: manufacturing and performance. Materials Research, São Carlos, v. 15, n. 3, p. 483-489, 2012. Disponível em: https://www.scielo.br/j/mr/a/tmdNpwSPKx567xrSQxgPvdH/?lang=en. Acesso em: 7 out. 2025.
License:	Creative Commons Atribuição-NãoComercial 4.0 Internacional (CC BY-NC 4.0)
URI:	https://ri.ufs.br/jspui/handle/riufs/23368
Appears in Collections:	DCEM - Artigos de periódicos

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