Analysis of Surface Deformation Due to Thermal Load on Circular Quasi-Isotropic Laminate Mirrors

Kim, Kyungpyo; Hale, Richard

doi:10.2514/6.2008-2185

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Consideration must be taken as to the operating conditions of the mirror. In a paper by Kim, fibre print through mitigation using a resin rich layer can cause high special frequency errors due to differential thermal expansion of the substrate and the resin layer [8]. This means that the radial stiffness of the mirror needs to be matched in order to alleviate this error.…”

Section: Introductionmentioning

confidence: 99%

Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

2019

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In this work, we are aiming to reduce the mass of large precision mirrors for space missions by using space approved composite materials. We report the development of an active/adaptive optics prototype of carbon fiber reinforced polymer mirrors using a pre-impregnated (pre-preg) composite MTM44-1/IMS65. The carbon fiber mirror has 16 layers of carbon fiber and one layer of polishable resin which compensate the well-known problem of ''fiber print through''. The development of a fabrication method, suited for creating a CFRP mirror is outlined. As all materials will change properties to some degree, during cool down to cryogenic temperatures, FEA model is employed to investigate the change on overall form and figure of the mirror. Characterizing this dimensional change is critical in insuring that any mirror material can be used in this environment and, if required, corrected either by utilizing a deformable mirror control systems or by correction in the optical system. Two different piezoelectric actuators are modelled and used to create an active composite reflector. Push actuators and micro fiber composite (MFC) actuators are simulated and the performance of them are compared by surface deformation and dynamic response.

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Section: Introductionmentioning

confidence: 99%

Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

2019

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A novel layup process for reducing surface thermal distortion of CFRP laminate reflector

Yin,

Sun,

Fan

et al. 2025

Composite Structures

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Evaluating deformation in FRP boat: Effects of manufacturing parameters and working conditions

Nhut,

Tien,

2024

Journal of the Mechanical Behavior of Materials

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Fiber-reinforced plastic (FRP) is utilized in the fabrication of the primary structures of FRP boats. A majority of these structures are produced using molds. Subsequently, these products often experience deformation upon being released from the mold, as well as when they are exposed to high temperatures. Hence, it is crucial to carry out experimental investigations and evaluations related to the deformation of laminated composite structures. The specimens, which are in the form of L-shapes and curve-shapes, are constructed using unsaturated polyester resin and fiberglass material. The study focuses on two independent variables, namely the percentage of hardeners and the temperature during the manufacturing process. The output factor under examination is deformation, which is measured on these specimens. Subsequently, all of the specimens are subjected to varying levels of temperature using an oven as the working condition. The deformation is further assessed based on the experimental findings and regression equation. The results indicate that as the rate of hardener and temperature increase, the level of deformation decreases. Additionally, it was observed that when the temperature rises from 500 to 800°C, the specimens with initial deformation values that are either too high or too low undergo rapid changes. Moreover, the experimental equations can be utilized to predict the values of deformation or input factors.

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Analysis of Surface Deformation Due to Thermal Load on Circular Quasi-Isotropic Laminate Mirrors

Cited by 5 publications

References 6 publications

Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

A novel layup process for reducing surface thermal distortion of CFRP laminate reflector

Evaluating deformation in FRP boat: Effects of manufacturing parameters and working conditions

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