DETERMINATION OF THE DIMPLE MAXIMUM DEPTH IN SUPER-THIN LOAD-BEARING SKINS OF A SPACECRAFT SOLAR BATTERY SANDWICH PANEL

В. Є. Гайдачук, В. Ф. Деменко, А. В. Кондратьєв

Abstract


 

Continuous dimple of super-thin skins are purely specific defects that are found in the process of sandwich panels manufacturing of spacecraft solar batteries. These types of defects, both in terms of the nature of their appearance and in the aspect of reduction (elimination), are currently receiving close attention. An analysis of this type of defect, which occurs in the process of assembling a sandwich structure by gluing super-thin load-bearing skins and cellular aggregate, has been carried out. A mathematical model was developed to estimate these dimples, which takes into account the thermal expansion of the cladding and cellular aggregate at the temperature of the panel gluing, followed by icing and fixation of the glue in a heated state, and then cooling the glued panel to normal temperature. On the basis of this model, analytical dependences for determining the maximum depth of dimple were obtained. It was shown that continuous dimples have a relatively small value and are an inevitable consequence of the optimal design implementation with the exception of the only parameter - the temperature difference during cooling from the panel gluing temperature to normal. Therefore, the use of glues that polymerize at lower temperatures (as well as binders for the manufacture of panel skins) can reduce the dimple size. The research results allow solving a number of new tasks of the technology of assembling a structures made of polymer composite materials for aerospace engineering and can be used in the production of other precision products for conversion purposes.

Keywords


cellular filler, continuous contractions, thermal nonequilibrium structure

References


Rajak, D. K., Pagar, D. D., Menezes, P. L., Linul, E. Fiber-reinforced polymer composites: manufacturing, properties, and applications. – Polymers. – 2019. – Vol. 11(10). – 1667. https://doi.org/10.3390/polym11101667

Hsissou, R., Seghiri, R., Benzekri, Z., Hilali, M., Rafik, M., Elharfi, A. Polymer composite materials: A comprehensive review. – Composite Structures. – 2021. – No. 262. – 113640. https://doi.org/10.1016/j.compstruct.2021.113640

Birman, V., Kardomateas, G.A. Review of current trends in research and applications of sandwich structures. – Composites Part B: Engineering. – 2018. – Vol. 142. – P. 221 – 240. https://doi.org/10.1016/j.compositesb.2018.01.027

Schubert, M., Perfetto, S., Dafnis, A., Atzrodt, H., Mayer, D. Multifunctional and lightweight load-bearing composite structures for satellites. – MATEC Web Confer. – 2018. – Vol. 233. – 00019. https://doi.org/10.1051/matecconf/201823300019

Tiwary, A., Kumar, R., Chohan, J.S. A review on characteristics of composite and advanced materials used for aerospace applications. – Materials Today: Proceedings. – 2022. – Vol. 51(1). – P. 865 – 870. https://doi.org/10.1016/j.matpr.2021.06.276

Slyvynskyi, V.I., Аlyamovskyi, А.I., Kondratjev, А.V., Kharchenko, М.Е. Carbon honeycomb plastic as light-weight and durable structural material. – 63th International Astronautical Congress, IAC 2012. Naples, Italy, 1 - 5 October 2012 – Red Hook, NY: Curran, 2012. – Vol. 8. – P. 6519 – 6529.

Castanie, B., Bouvet, C., Ginot, M. Review of composite sandwich structure in aeronautic applications. – Composites Part C: Open Access. – 2020. – No. 1. – 100004. https://doi.org/10.1016/j.jcomc.2020.100004

Vargas-Rojas, E., Nocetti-Cotelo, C.A.: Alternative proposal, based on systems-engineering methods, aimed at substituting with carbon-epoxy laminates the load-bearing aluminum sandwiches employed in the structure of a small satellite. – Advances in Space Research. – 2020. – Vol. 66. – P. 193 – 218. https://doi.org/10.1016/j.asr.2020.04.004

Baran, I., Cinar, K., Ersoy, N., Akkerman, R., Hattel, J. H. A Review on the mechanical modeling of composite manufacturing processes. – Archives of Computational Methods in Engineering. – 2017. – Vol. 24(2). – P. 365 – 395. https://doi.org/10.1007/s11831-016-9167-2

Li, Y., Xiao, Y., Yu, L., Ji, K., Li, D.S. A review on the tooling technologies for composites manufacturing of aerospace structures: materials, structures and processes. – Composites Part A: Applied Science and Manufacturing. – 2022. – No. 154. – 106762. https://doi.org/10.1016/j.compositesa.2021.106762

Gavva, L. M., Firsanov, V. V. Analytical review of account methods and experimental approaches to stress-strain state investigation of structurally-anisotropic aircraft panels made from composite materials. – IOP Conference Series: Materials Science and Engineering 2020, AMMAI 2020. – Vol. 927. 012067. https://doi.org/10.1088/1757-899x/927/1/012067

Siivola, J., Minakuchi, S., Takeda, N. Dimpling monitoring and assessment of satellite honeycomb sandwich structures by distributed fiber optic sensors. – Structural Health Monitoring – from Sensing to Diagnosis and Prognosis. -2017. – Vol. 188. – P. 186 – 193. https://doi.org/10.1016/j.proeng.2017.04.473

Kondratiev, A., Gaidachuk, V., Nabokina, T., Tsaritsynskyi, A. New Possibilities of Creating the Efficient Dimensionally Stable Composite Honeycomb Structures for Space Applications. – Advances in Intelligent Systems and Computing. – Vol. 1113. – Springer: Cham, 2020. – P. 45 – 59. https://doi.org/10.1007/978-3-030-37618-5_5

Wang, Z.G., Li, Z.D., Zhou, W., Hui, D. On the influence of structural defects for honeycomb structure. – Composites Part B: Engineering. – 2018. – Vol. 142. – P. 183 – 192. https://doi.org/10.1016/j.compositesb.2018.01.015

Kondratiev, A., Prontsevych, O. Stabilization of physical-mechanical characteristics of honeycomb filler based on the adjustment of technological techniques for its fabrication. – Eastern-European Journal of Enterprise Technologies. – 2018. – Vol. 5. – P. 71 – 77. https://doi.org/10.15587/1729-4061.2018.143674

Yankovskii, A.P. Steady-State Creep of Metal-Composite Sandwich Panels with Thin Reinforced Bearing Layers. – Mech. Compos. Mater. – 2019. – Vol. 55. – P. 421 – 434. https://doi.org/10.1007/s11029-019-09823-y

Zebrine, D., Wadhwani, E., Nutt, S. Surface porosity development in tool-side facesheets of honeycomb core sandwich structures during co-cure. – Advanced Manufacturing-Polymer and Composites Science. – 2022. – No. 8. – P. 43 – 55. https://doi.org/10.1080/20550340.2022.2056313

Rion, J., Stutz, S., Leterrier, Y., Manson, J.A.E. Influence of process pressure on local facesheet instability for ultra-light sandwich structures. – Journal of Sandwich Structures and Materials. – 2009. – No. 11. – P. 293 – 311. https://doi.org/10.1177/1099636209104513

Siivola, J.T., Minakuchi, S., Mizutani, T., Kitamoto, K., Takeda, N. Monitoring of dimple formation in honeycomb sandwich structures using distributed fiber optic sensors. – Journal of Sandwich Structures and Materials. – 2021. – Vol. 23. – P. 3645 – 3668. https://doi.org/10.1177/1099636220935821

Гайдачук А.В., Карпикова О.А., Кондратьев А.В., Сливинский М.В. Сотовые заполнители и панельные конструкции космического назначения: монограф. в 2 т. Т. 1. Технологические несовершенства сотовых заполнителей и конструкций; под. ред. А.В. Гайдачука. – Харьков: Нац. аэрокосм. ун-т им. Н.Е. Жуковского «Харьк. авиац. ин-т», 2012. – 279 с.

Gavva, L. M., Firsanov, V. V. Mathematical models and methods for calculating the stress-strain state of aircraft panels from composite materials taking into account the production technology. – Mechanics of Solidsю – 2020. – Vol. 55(3). – P. 403 – 412. https://doi.org/10.3103/s002565442003005x

Boitsov, B.V., Gavva, L.M., Pugachev, Y.N. The Stress–strain state of structurally anisotropic panels from composite materials under force and process temperature exposure. – Polymer Science, Series D. 2019. – No. 12. – P. 85 – 90. https://doi.org/10.1134/S1995421219010039

Деменко В.Ф., Курєннов С.С. Основи теорії напружено-деформованого стану. – Харків: Нац. аерокосм. ун-т ім. М.Є. Жуковського "Харків. авіац. ін-т", 2018. – 256 с.




DOI: https://doi.org/10.32620/oikit.2022.96.07

Refbacks

  • There are currently no refbacks.