Title
Improved stress prediction in adhesive bonded optical components
Author
de Vreugd, J.
te Voert, M.J.A.
Nijenhuis, J.R.
Pijnenburg, J.A.C.M.
Tabak, E.
Publication year
2012
Abstract
Adhesives are widely used in optomechanical structures for bonding optical components to their mounts. The main advantage of using adhesives is the excellent strength to weight ratio. Adhesive bonding is seen as a desirable joining technique as it allows for greater flexibility in design. A disadvantage of adhesives however is the limited dimensional stability and loadability. To design stable optical mounts, accurate prediction of stresses and deformation is therefore needed. Adhesives show strong temperature and loading history dependent behavior. Viscoelastic material models are needed for accurate prediction of stresses and strains in bonded joints. However, representative material data for adhesives is difficult to find. In this research, an experimental framework is build up to determine relevant mechanical properties of adhesives for improving stress and deformation prediction. This paper shows the results of the characterization experiments and modeling techniques. Also the implementation of material models in finite element code is briefly discussed. The obtained models are used in the mount design in the EUCLID and TROPOMI programs as described in "Ultra stable isostatic bonded optical mount design for harsh environments, J.A.C.M Pijnenburg et al" (this conference). © 2012 SPIE.
Subject
Adhesive properties
Optical mounts
Optomechanics
Thermo mechanical stress
Viscoelasticity
High Tech Systems & Materials
Industrial Innovation
Mechatronics, Mechanics & Materials
OM - Opto-Mechatronics
TS - Technical Sciences
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http://resolver.tudelft.nl/uuid:e1150e8d-4b05-4944-a140-fa0e4642ab19
TNO identifier
469536
ISBN
9780819491510
ISSN
0277-786X
Source
Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II, 1-6 July 2012, Amsterdam, Netherlands, 8450 (8450)
Series
Proceedings of SPIE - The International Society for Optical Engineering
Document type
conference paper