High-power laser resistance of filled sandwich panel with truss core: An experimental study

Yuan, Wu; Wang, Jiangtao; Song, Hongwei; Ma, Te; Wu, Wenjun; Li, Junning; Huang, Chenguang

doi:10.1016/j.compstruct.2018.03.031

Cited by 14 publications

(9 citation statements)

References 38 publications

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“…As stated in the reference 9 , heat energy generated by laser irradiation was mainly transmitted in the front panel before the front panel was penetrated by melting. Then, the back surface temperature rose rapidly after 10 s and reached the melting point at 11.9 s. Due to the small heat sink of the back panel, the temperature rise rate of unfilled sandwich panel was far greater than those of the monolithic plate and the CNT film filled sandwich panel.…”

Section: Resultsmentioning

confidence: 95%

“…Laser interactions with solid materials have received increasing attention in various conditions, including laser welding 24 , 25 , laser drilling 26 , laser cutting 27 and laser processing 28 , and laser induced damages 9 , 29 . For the highly-porous materials, Chen et al 30 studied the interaction between the pulsed ultra-violet laser and the CNT sponge, and discussed the plasmatic property caused by pulse laser in CNT sponge.…”

Section: Introductionmentioning

confidence: 99%

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Carbon nanotube sponges filled sandwich panels with superior high-power continuous wave laser resistance

Yuan

Xiao

et al. 2022

Sci Rep

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Effect of highly-porous and lightweight carbon nanotube sponges on the high-power continuous wave laser ablation resistance of the sandwich panel was investigated experimentally. As a comparison, thermal responses of monolithic plate, carbon nanotube film filled sandwich panel, unfilled sandwich panel and carbon nanotube sponge filled sandwich panel subjected to continuous wave laser irradiation were analyzed. Experimental results showed that the laser resistance of the carbon nanotube filled sandwich panel is obviously higher than the unfilled structure. The added failure time of the sandwich panel by filling the cores with the carbon nanotube sponge of unit mass was about 18 times and 33 times longer than that by filling with the conventional ablative and insulated material. It could be understood by the high thermal diffusion coefficient and latent heat of sublimation of the carbon nanotube sponge. During ablation by the continuous wave, the carbon nanotube sponge not only fast consumed the absorbed laser energy through phase change of a large-area material due to its high latent heat of sublimation, but also quickly dispersed the heat energy introduced by the continuous wave laser due to its high thermal diffusion coefficient, leading to the extraordinary laser ablation resistance.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Carbon nanotube sponges filled sandwich panels with superior high-power continuous wave laser resistance

Yuan

Xiao

et al. 2022

Sci Rep

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“…Good protective properties in buffering of fire and thermal shock can be obtained using composite polymer coverings with typical ablative composite matrices like silicone resin (Yuan et al, 2018), phenol resins ( Kucharczyk et al, 2013;Pulci et al, 2010;Bahramian, 2013;Zhou et al, 2019) or epoxy resins (Kucharczyk, 2010;Bakar et al, 2016;Camino et al, 2005;Kucharczyk et al, 2018;Krzyżak et al, 2018;Stawarz et al, 2019) with fillers that increase the thermal stability of a composite. Pure resins are good ablative materials.…”

Section: Introductionmentioning

confidence: 99%

“…3, No. 1, 2022: 235 -247 236 et al, 2018Kucharczyk et al, 2013;Bakar et al, 2016;Camino et al, 2005;Lombardi et al, 2012;Fino et al, 2012), nanopowdwers (Stawarz et al, 2019) or fibre reinforcement ( Pulci et al, 2010;Bahramian, 2013;Kucharczyk, 2010;Xie et al, 2020;Alagar et al, 2000;Minkook et al, 2016) or reinforcing plates (Yuan et al, 2018;Fino et al, 2012;Shi et al, 2020) of high melting temperatures build a composite structure that substantially improves thermoprotective, thermomechanical (Shi et al, 2020) and mechanical (Xie et al, 2020;Bieniaś & Jakubczak, 2017) properties of a polymer ablative composite.…”

Section: Introductionmentioning

confidence: 99%

Simulation of operating loads of ablative composite shields used in flight data recorders

Przybyłek¹,

Opara²,

Kucharczyk³

et al. 2022

Rep. Mech. Eng.

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The objects of the mathematical simulation were two covers of the same shape, but different geometrical dimensions. The covers were made of aramid fabric, alternating and uniformly distributed in the composite - in a polymer matrix of epoxy resin, modified with 15% addition of MMT. For each of the two guards, four variants of the composite material were considered in correlation with the metal casing, as well as three load cases, in accordance with the normative documents. A numerical analysis of dynamic tests was performed to determine the durability of the recorder. As a result of the conducted analyses, stress values were obtained in all load cases and for all kinds of placement of the composite in correlation with the metal reinforcement casing. The displacements of the entire model and stress σx were analyzed as a possible cause of delamination, while the shear stress τyz is a possible cause of inter-cutting. Also, a detailed distribution of stresses reduced in subsequent layers of the cover material was analyzed. The distribution of kinetic and potential energy during piercing of the composite thermo-protective casing was determined by numerical simulation and the design of the recorder housing made of an epoxy ablation composite, with a metal casing located inside the casing, was considered.

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“…32 Recently, low-density thermal insulation material has been filled in the SPTC, and it is found that the filled SPTC has much better performance in thermal insulation, especially in the cases of ultra-high local heat flux, for example, irradiated by high-power laser. 33,34 Compared with plates and pipes, the filled SPTC is more complicated, which consists of two facesheets, truss core, and filled material. The traditional NDT methods may not work, such as AE and guided wave.…”

Section: Introductionmentioning

confidence: 99%

Damage identification of low-density material–filled sandwich panels with truss core based on vibration properties

Wang

et al. 2018

Structural Health Monitoring

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A damage-identification method based on flexibility matrix and Teager energy operator is proposed for low-density material–filled sandwich panels with truss core. In the proposed damage index, weight coefficient r is introduced to consider the effect of damages on both high-order and low-order modes. Numerical simulations and experiments are conducted to assess the performance of the proposed method. Effects of Young’s modulus of the filler material on the accuracy of the proposed method are also discussed. Results reveal that the method is reliable and effective for single-damage and multiple-damages identification of filled sandwich panels with truss core, and weight coefficient plays an important role, especially for cases with multiple damages or damages of small extent. Damage identification becomes more difficult as Young’s modulus of the filler increases, and there is a critical value, after which the damage could not be identified by the proposed method.

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High-power laser resistance of filled sandwich panel with truss core: An experimental study

Cited by 14 publications

References 38 publications

Carbon nanotube sponges filled sandwich panels with superior high-power continuous wave laser resistance

Carbon nanotube sponges filled sandwich panels with superior high-power continuous wave laser resistance

Simulation of operating loads of ablative composite shields used in flight data recorders

Damage identification of low-density material–filled sandwich panels with truss core based on vibration properties

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