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Polyamide worm gear : manufacturing and performance

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Polyamide worm gear : manufacturing and performance

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Título Polyamide worm gear : manufacturing and performance
Autor Gasparin, Alexandre Luis
Corso, Leandro Luís
Tentardini, Eduardo Kirinus
Nunes, Regina Célia Reis
Forte, Maria Madalena de Camargo
Oliveira, Ricardo Vinicius Bof de
Abstract 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).
Contido em Materials research : ibero-american journal of materials. São Carlos, SP. vol. 15, no. 3 (2012), p. 483-489
Assunto Compósitos
Elementos finitos
Engenharia de materiais
Engrenagens
[en] Material performance
[en] Polyamide composites
[en] Worm gear
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/112082
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