Using the DP-190 glue for adhesive attachment of a large space mirror and its rim

Vlasenko, Oleg; Zverev, A. F.; Sachkov, Mikhail

doi:10.1117/12.2055729

Cited by 9 publications

(6 citation statements)

References 14 publications

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“…The prospects of stellar studies with WSO-UV are presented in papers [16][17]. A paper [18] describes our experience of using the DP-190 glue for adhesive attachment of a large space mirror and its rim.…”

Section: Introductionmentioning

confidence: 99%

New facilities for Al+MgF2 coating for 2-m class mirrors for UV

et al. 2014

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Broadband reflective coatings are required for mirrors of astronomical space telescopes. The obvious choice for a coating with high reflectance above 115 nm is Al protected with MgF2. The paper describes capacities of new facilities in LUCH company that are created for World Space Observatory -Ultraviolet (WSO-UV) project. The chamber has been designed with a size that would enable the coating of 2-m class mirrors. The T-170M telescope is a part of the WSO-UV payload. This work describes also the development of the coating process and the process of applying the reflective and protective coating on the mock-up Primary Mirror of the telescope as well as the process.

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Section: Introductionmentioning

confidence: 99%

New facilities for Al+MgF2 coating for 2-m class mirrors for UV

et al. 2014

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“…At present, the plane mirror in this space optical remote sensor system is usually fixed by adhesive layer due to the adhesive assembly technology has the advantages of good flexibility, good sealing, earthquake resistance and anti loosening [1][2][3] . However, due to the effects of liquid-solid phase change, material volatilization and chemical reaction during the adhesive curing period, the adhesive layer shrinkage stress is formed under the bidirectional constraint of metal frame and mirror, which induces the surface deformation of optical elements, and finally affects the imaging quality of optical system, so optimizing the adhesive process is an important way to improve the assembly accuracy of precision optical components [4] .…”

Section: Introductionmentioning

confidence: 99%

Study on optimization method of multi-point combined adhesive process for optical plane mirror

Zheng

KANG²,

Li³

et al. 2023

Advanced Optical Manufacturing Technologies and Applications 2022; And 2nd International Forum of Young Scientists on Advanced

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In order to quickly obtain the optimal bonding styles in the adhesive bonded mirror, the simulation and experimental study of the adhesive bonding assembly process for plane mirror were carried out. A single-factor experiment was designed to study the variation of the PV and RMS values of the surface-shape of optical plane mirror with the change of various factors. Then, an orthogonal experiment was designed to study the optimal parameters for the optimal bonding process by taking the PV and RMS of the surface-shape as comprehensive indexes. A finite element model named "Mirror-Adhesive -Frame" was developed using ANSYS Parametric Design Language (APDL) to calculate the PV and RMS values of the surface-shape of the mirror after bonding. In addition, a interference instrument named ZYGO is used to verify the correctness of the surface shape from simulation. The results show that the prediction results of the developed simulation model are in good agreement with the measurement results. The values of surface shape index PV and RMS increase with the increase of adhesive layer diameter and thickness, and gradually decrease with the increase of adhesive layer position in R direction and H direction.The orthogonal experiment with four factors and three levels revealed that the diameter of adhesive layer is the main factor to change the shape of the surface. The optimal process parameters are as follows: adhesive layer diameter of Φ4mm, adhesive layer thickness of 0.1 mm. adhesive layer position in R-direction of 40 mm and adhesive layer position in H-direction of 9.5mm.

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“…Vreugd et al 8 developed a finite element modeling method for mirror bonding. Vlasenko et al 14 studied the influences of adhesive layers with different thicknesses on large-aperture mirrors under the action of thermal load, and they reduced the optical surface deformation by a factor of 3 by using bonding based on discrete cylindrical spots. Tan discussed the influence of the stiffness ratio of the mirror to the support structure on its surface shape precision and constructed a simple model used to guide the structural optimization.…”

Section: Introductionmentioning

confidence: 99%

Microstress bonding design of low-distortion mirror assembly

Sun

Chen

et al. 2022

Opt. Eng.

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To address the problem that bonding can lead to a reduction in the surface shape precision of a space-bound mirror, relationships between mirror deformation, thermal stress, and curing shrinkage stress were studied, and a bonding microstress design route was proposed. The thermal stress and thermal deformation introduced by thermal expansion mismatch were eliminated through an athermal adhesive layer thickness design. The relationship between mirror deformation and the curing shrinkage of the adhesive layer was derived completely, and structural optimization measures for releasing the curing stress of the adhesive layer are given. Bonding stress analysis was conducted based on the equivalent thermal deformation method, and an optimal structure meeting the design requirements was obtained. Finally, bonding of the mirror assembly was completed via this route, and the measured surface shape precision was stable at 0.0225λ. The theoretical analysis and experimental study demonstrate that this bonding design method can predict the bonding stress in the assembly process, making the follow-up bonding result controllable. These results should provide an excellent reference for the design and high-precision integration of large-aperture mirrors.

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Using the DP-190 glue for adhesive attachment of a large space mirror and its rim

Cited by 9 publications

References 14 publications

New facilities for Al+MgF2 coating for 2-m class mirrors for UV

New facilities for Al+MgF2 coating for 2-m class mirrors for UV

Study on optimization method of multi-point combined adhesive process for optical plane mirror

Microstress bonding design of low-distortion mirror assembly

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