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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 4, Iss. 1 — Jan. 1, 2014
  • pp: 79–91

Influence of ply misalignment on form error in the manufacturing of CFRP mirrors

Samantha J. Thompson, Samuel Bichon, and Richard J. Grant  »View Author Affiliations


Optical Materials Express, Vol. 4, Issue 1, pp. 79-91 (2014)
http://dx.doi.org/10.1364/OME.4.000079


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Abstract

We describe our study conducted within the framework of the design of composite mirrors for use in future generation astronomical telescopes. The work is also relevant to applications requiring lightweight optics and other unidirectional-ply fibre-composite-polymer constructs that require improved accuracy of form. Misalignment of layers (plies) in a composite laminate gives an astigmatic type deformation of the surface after cure. The influence of ply misalignment on surface form has been investigated via a series of finite element analyses. Thirty-two different layup sequences have been investigated: the angular increment between each ply, the number of plies and the number of sequence repeats were varied. Samples with random alignment errors have been simulated in order to compare the robustness of these different layup sequences toward ply misalignment; some design recommendations have been made. The finite element modelling method and results are presented here.

© 2013 Optical Society of America

OCIS Codes
(160.2290) Materials : Fiber materials
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.4040) Optical devices : Mirrors
(350.1260) Other areas of optics : Astronomical optics
(350.3850) Other areas of optics : Materials processing
(350.6090) Other areas of optics : Space optics

ToC Category:
Materials Processing

History
Original Manuscript: September 17, 2013
Revised Manuscript: November 6, 2013
Manuscript Accepted: November 6, 2013
Published: December 12, 2013

Citation
Samantha J. Thompson, Samuel Bichon, and Richard J. Grant, "Influence of ply misalignment on form error in the manufacturing of CFRP mirrors," Opt. Mater. Express 4, 79-91 (2014)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-4-1-79


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