Hypervelocity impact on flexible curable composites and pure fabric layer bumpers for inflatable space structures

Kim, Yun‐Ho; Choi, Chunghyeon; Kumar, Sarath Kumar Sathish; Kim, Chun-Gon

doi:10.1016/j.compstruct.2017.06.035

Cited by 24 publications

(4 citation statements)

References 19 publications

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“…Furthermore, the Ti/Al lightweight graded material is a new type of material used in the shields of spacecrafts which shows excellent performance when subjected to the hypervelocity impact of space debris. This is attributed to the gradual variation in the composition, microstructure, and mechanical properties, resulting in a corresponding evolution in the pressure experienced by the target material [7][8][9][10]. Accordingly, the Ti/Al lightweight graded material could be widely used in the industries such as machinery manufacturing, automotive, aerospace, etc.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Ti/Al lightweight graded material by direct laser deposition

Liu

et al. 2018

Materials Science and Technology

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A novel Ti/Al lightweight graded material was fabricated successfully using the direct laser deposition process, with the composition continuously changing from 100 vol.-% Ti6Al4V to 100 vol.-% AlSi10Mg. Microstructures and phase transformations were characterised, and the mechanical properties of the Ti/Al lightweight graded material were investigated. It was found that element concentrations followed a nearly linear relationship along the compositional gradient. The maximum hardness reached 619 HV in the ‘II’ zones, and then it decreased gradually to 214 HV at the outermost layer, with the increase in the proportion of AlSi10Mg. The values for the ultimate tensile strength were above 400 MPa, and the fracture surfaces indicated a transition from ductile to brittle fracture along the graded direction.

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Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Ti/Al lightweight graded material by direct laser deposition

Liu

et al. 2018

Materials Science and Technology

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“…Development of inflatable structures was a breakthrough in the space flight industry since it provides a flexibility to launch and install a large space setup in the outer orbits. To safeguard these structures, Kim et al [110], developed shock shields comprising front bumper made of multi-layered ceramic fabrics and carbon fiber composites. The carbon fiber bumpers performed better than the ceramic fabric ones against hypervelocity impact.…”

Section: Experimental Analysis Of Whipple Shieldsmentioning

confidence: 99%

Advances in the Whipple Shield Design and Development:

Pai

Divakaran

Anand

et al. 2021

J. dynamic behavior mater.

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Safety of satellites as well as spacecrafts during space missions is a primary objective to preserve the physical and virtual assets onboard. Whipple shields belong to the class of protective equipment provided on the surface of the spacecrafts and satellites, to sustain impacts from the ultra-high speed debris, which can otherwise cause considerable damage to the corresponding structures. Recent works on whipple shields are focussed on determining the response of different geometrical arrangements and material properties under hyper-velocity impact at projectile speeds of 3-18 km/s. Advances in the whipple shield design include integrated and mechanised models employing high performance materials like fiber-metal laminates ensuring better operational capability. The forward bumper of the whipple shield is the first line of defence as it regulates the state of projectile after the primary impact. Use of aluminium alloys for front bumpers is popular, owing to their lightweight and strength characteristics. The advances for the front bumper have seen usage of ceramic, metallic foams, and super composite mixtures, which resulted in enhanced performance, durability and safety of the whipple shields. This work is a comprehensive coverage of the latest materials used for whipple shields, their performance characterization—both experimental and theoretical, and applications.

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“…The over adhesion restricts the fabric layer to absorb the kinetic energy of the debris cloud which causes the shielding performance to degrade [ 6 , 7 ]. Shear Thickening Fluid (STF) impregnated fabric composites [ 20 ] and directly curable composites [ 21 ] can be more effectively used as a bumper of a hypervelocity shield than as pure fabric layers.…”

Section: Introductionmentioning

confidence: 99%

The Hypervelocity Impact Behavior and Energy Absorption Evaluation of Fabric

Cui

et al. 2023

Polymers

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In this work, the mechanical behavior and energy absorption characteristics of flexible fabric under hypervelocity impact (HVI) were investigated. Basalt fabric, ultra-high molecular weight polyethylene (UHMWPE) fabric, and aluminum alloy (Al) plate were chosen to be the sample materials for their excellent mechanical properties and applicative prospect in spacecraft shielding. HVI experiments had been conducted with the help of a two-stage light-gas gun facility, wherein Al projectile with 3.97 mm diameter was launched at velocities in the range 4.1~4.3 km/s. Impact conditions and areal density were kept constant for all targets. The microstructural damage morphology of fiber post-impact was characterized using a scanning electron microscope (SEM). Analysis results show that a brittle fracture occurred for Basalt fiber during HVI. On the contrary, the ductile fractures with large-scale plastic deformation and apparent thermal softening/melting of the material had happened on the UHMWPE fiber when subjected to a projectile impact. According to the HVI shielding performance and microstructural damage analysis results, it can be inferred that ductile fractures and thermal softening/melting of the material were the prevailing energy absorption behaviors of UHMWPE fabric, which leads to absorbing more impact energy than Basalt fabric and eventually, contributes the superior shielding performance.

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Hypervelocity impact on flexible curable composites and pure fabric layer bumpers for inflatable space structures

Cited by 24 publications

References 19 publications

Microstructure and properties of Ti/Al lightweight graded material by direct laser deposition

Microstructure and properties of Ti/Al lightweight graded material by direct laser deposition

Advances in the Whipple Shield Design and Development:

The Hypervelocity Impact Behavior and Energy Absorption Evaluation of Fabric

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