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Surface characterization of die inserts used for LED lamp plastic lenses

Aidibe, Ali et Nejad, Mojtaba Kamali et Tahan, Antoine et Jahazi, Mohammad et Cloutier, Sylvain G.. 2017. « Surface characterization of die inserts used for LED lamp plastic lenses ». International Journal of Advanced Manufacturing Technology, vol. 88, nº 9-12. p. 3395-3403.

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Résumé

The main objective of this paper is to investigate the effect of material characteristics and manufacturing processes on the surface textures of diamond cut inserts used for injected plastic optics in lighting applications. An overview of surface texture measurement is presented followed by an experimental procedure developed on 18 different die insert samples. A list of profile (2D) and areal (3D) surface texture measurement parameters characterizing the surface of the different samples is presented. The results of the analysis show that the average absolute roughness Ra, which is commonly used in industry, is not the only parameter representing the surface texture and is not a reliable discriminator for different types of surface textures. By using a principal component analysis technique, a list of significant parameters is proposed for a more accurate characterization of the surfaces resulting from different high precision diamond cutting processes. It is shown that the proposed parameters can be considered as optimum descriptors of the condition of the surface in diamond cutting and are those that show the greatest sensitivity to process variables.

Type de document: Article publié dans une revue, révisé par les pairs
Professeur:
Professeur
Tahan, Antoine
Jahazi, Mohammad
Cloutier, Sylvain G.
Affiliation: Génie mécanique, Génie électrique
Date de dépôt: 07 juill. 2016 21:24
Dernière modification: 14 sept. 2017 14:24
URI: http://espace2.etsmtl.ca/id/eprint/13092

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