Comparison of self-healing ionomer to aluminium-alloy bumpers for protecting spacecraft equipment from space debris impacts

Francesconi, Alessandro; Giacomuzzo, Cinzia; Grande, Antonio Mattia; Mudrić, Teo; Zaccariotto, Mirco; Etemadi, Ehsan; Landro, Luca Angelo Di; Galvanetto, Ugo

doi:10.1016/j.asr.2012.10.013

Cited by 42 publications

(23 citation statements)

References 36 publications

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“…In the latter materials, however, the presence of a reinforcing fabric or foam efficiently adherent to ionomer in some cases reduced the self-healing efficiency. The healing mechanism of ionomers is well discussed in the literature [3][4][5][6][7][8][9]. It is the result of a "welding" effect, where the energy dissipation due to material plastic deformation and projectile friction, leads to material melting; the following viscoelastic recovery and material solidification are able to, at least partially, close and seal the damage.…”

Section: Resultsmentioning

confidence: 99%

“…The speed of bullets, measured using a laser beam, ranged between 700 and 730 m/s. Hypervelocity tests of ionomer plates were carried out up 4000 m/s with a two-stage Light-Gas Gun; aluminium spheres with 1.5 mm diameter were used as bullets [19,20]. Low-velocity (180 m/s) and mid-velocity (400 m/s) impact tests were performed by shooting steel balls of different sizes using an air gun and a shotgun, respectively [19].…”

Section: Ballistic Tests and Healing Evaluationmentioning

confidence: 99%

“…Thermoplastic materials, such as ionomers based on ethylene-co-methacrylic acid copolymers, partially neutralized with sodium or zinc, have shown self-healing behaviour after ballistic impacts [3][4][5][6][7][8][9]. Blends of ionomer with different polymers, yet with selfmending ability, were also investigated [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Improved solutions for dangerous liquid containment

Janszen

Grande

Bettini

et al. 2013

Safety and Security Engineering V

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The availability of new materials with uncommon characteristics and functionalities gives the opportunity to develop and possibly integrate new conceptual solutions for the improvement of safety in the design and manufacture of containers for critical substances. Numerous examples can be devised where a proper containment of liquid, even after tank damage, is essential with regard to safety issues. Bullet penetration or debris impact of fuel tanks are two relevant examples where specifically designed configuration and materials may significantly improve safety margins. In such situations, deflagration can be activated by sudden variation of internal pressure and temperature or liquid spilling due to wall container perforation.Cellular filler material in the container can remarkably dispel fire heat and limit pressure wave peaks generated by a bullet explosion; moreover, the overall response to impact loads in case of a crash is remarkably improved. Different fillers with particular configurations, ranging from porous structure to expanded aluminium foil, have been tested as tank explosion suppression media with remarkably positive results.In traditional multilayer wall fuel tanks, self-sealing capability can be obtained as a result of swelling or chemical reaction of rubber/foam layer when it comes in contact with the spilling internal liquid. A usual drawback of these materials is the limited resistance to aging which reduces their effectiveness with time. Moreover, the sealing material does not give structural contribution furthermore consistently increasing the weight of the component. Polymeric materials with intrinsic self-healing capability may become a valid alternative to traditional configurations. In this context, ethylene-methacrylic acid based ionomers can be adopted as self-healing layers. The coupling of such self-

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Section: Resultsmentioning

confidence: 99%

Section: Ballistic Tests and Healing Evaluationmentioning

confidence: 99%

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Improved solutions for dangerous liquid containment

Janszen

Grande

Bettini

et al. 2013

Safety and Security Engineering V

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“…The speed of bullets, measured using a laser beam, ranged between 700 and 730 m/s. Hypervelocity tests of ionomer plates were carried out up to 4000 m/s with a two-stage Light-Gas Gun; aluminium spheres with 1.5-mm diameter were used as bullets [13,14]. Low-velocity (180 m/s) and mid-velocity (400 m/s) impact tests were also performed by shooting steel balls of different sizes using an air gun and a shotgun, respectively [14].…”

Section: Ballistic Tests and Healing Evaluationmentioning

confidence: 99%

“…Thermoplastic materials, such as ionomers based on ethylene-co-methacrylic acid copolymers, partially neutralized with sodium or zinc, have shown self-healing behaviour after ballistic impacts [9][10][11][12][13][14]. Blends of ionomers with different polymers were also investigated: blending allows to get mechanical properties tuned over a wide range, yet maintaining self-mending ability [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Integrated solutions for safe fuel tanks

Janszen¹,

Grande²,

Bettini³

et al. 2014

Int. J. SAFE

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The integration of different tools for the prevention of fi res or explosions due to impact or bullet damage may signifi cantly improve the safety of fuel tanks. Self-healing polymers have demonstrated their ability to autonomous mending bullet punctures. The results of ballistic tests to check the response of multilayer structures based on self-healing ionomer and aramid fabric or carbon foam are presented in view of their potential employment as safety materials for dangerous liquids containment. Considerations related to the effect of coupling of different materials over self-healing response are discussed. A conceptual solution that integrates self-healing polymers or composites with cellular fi ller made of wrinkled aluminium foil for fuel tanks is proposed and discussed.

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Self‐Healing Composite Materials

Atay

2022

Aerospace Polymeric Materials

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Comparison of self-healing ionomer to aluminium-alloy bumpers for protecting spacecraft equipment from space debris impacts

Cited by 42 publications

References 36 publications

Improved solutions for dangerous liquid containment

Improved solutions for dangerous liquid containment

Integrated solutions for safe fuel tanks

Self‐Healing Composite Materials

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