Application of composite materials in sports optics

Kupčák, Radim; Zouhar, Jan

Application of composite materials in sports optics

Files

MT_mft2020020016.pdf(1.37 MB)

Date

2020-08-18

Authors

Kupčák, Radim

Zouhar, Jan

ORCID

0000-0001-8031-8366

Publisher

J. E. Purkyne University in Usti nad Labem

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Abstract

CFRP (Carbon Fiber Reinforced Polymers) are often used when designing parts that need to be stiff, light and thermally stable. These benefits are a big motivation to use CFRP in many applications, one of them could be sports optics. However, optical devices require precise dimensions with tight tolerances for the optical assembly to work correctly. In order to determine if CFRP could be a suitable material of choice for sports optics a simplified body of binoculars was designed. The tubular body was manufactured by prepreg lay-up into a 3D printed mold, followed by curing in an autoclave. After the prototype was manufactured 3D measurements of the tube using 3D scanner GOM ATOS were made. As expected, shrinkage of the mold and the epoxy resin in the matrix of CFRP caused minor deformations. However, if the shape of the cured part remains unchanged during conditions similar to the general use of binoculars, then the initial deformations happening during manufacturing could be accounted for when designing the part. © 2020 Manufacturing Technology. All rights reserved.

Keywords

3-D measurement, 3-D scanner, Carbon fiber reinforced polyme, Optical assemblies, Prepregs, Thermally stable, Tight tolerances

Citation

Manufacturing TECHNOLOGY. 2020, vol. 20, issue 2, p. 200-209.
https://journalmt.com/artkey/mft-202002-0016_application-of-composite-materials-in-sports-optics.php

Document type

Peer-reviewed

Document version

Published version

Language of document

en

Document licence

Creative Commons Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/