Tire with Self-Repairing Mechanism

Nagaya, Kosuke; Ikai, Sigeo; Chiba, Manabu; Chao, Xujing

doi:10.1299/jsmec.49.379

Cited by 12 publications

(7 citation statements)

References 2 publications

(2 reference statements)

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The volume gain due to swelling can close reasonable large holes. [ 19 ] Inspiration for self-sealing materials can also be drawn from Nature. [ 19 ] Inspiration for self-sealing materials can also be drawn from Nature.

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mentioning

confidence: 99%

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

et al. 2015

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Breathable and waterproof membranes that self-seal damaged areas are prepared by modifying a poly(ether ester) membrane with an amphiphilic polymer co-network. The latter swells in water and the gel closes punctures. Damaged composite membranes remain water tight up to pressures of at least 1.6 bar. This material is useful for applications where water-vapor permeability, self-sealing properties, and waterproofness are desired, as demonstrated for a medical cooling device.

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confidence: 99%

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

et al. 2015

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“…[1][2][3][4][5][6][7][8][9] Successful systems have been demonstrated for healing microcracks [2,3,[10][11][12][13][14][15] and scratches [16][17][18][19][20] in polymers and impact damage in composites; [21][22][23][24][25] however, there have been few examples of concepts to address larger scale damage such as impact puncture. [26][27][28][29][30][31] Self-healing of puncture damage in polymers has been limited to the repair of elastomers, [26][27][28] and other non-structural polymers. [29][30][31] In these cases, elastic or viscoelastic recovery led to closure of the puncture site.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the composition of the healing agent, microcapsules can be applied to restore mechanical, [1,2,[10][11][12][13]40] electrical, [41] or barrier properties. [16,[26][27][28][29][30][31]42,43] Microvascular materials enable delivery of significantly more healing fluid than capsule systems and can facilitate both repair after repeat damage events as well as restoration of larger damage volumes. [3,14,33,[44][45][46][47] Several types of microvascular systems in fiber reinforced composites have been used for the recovery of mechanical performance following impact damage.…”

Section: Introductionmentioning

confidence: 99%

Restoration of Impact Damage in Polymers via a Hybrid Microcapsule–Microvascular Self‐Healing System

Gergely

Cruz

Krull

et al. 2017

Adv Funct Materials

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A hybrid microcapsule–microvascular system is introduced to regenerate the multiscale damage that results from impact puncture of vascularized polymeric sheets. Microvascular delivery of a two‐stage healing agent restores lost damage volume (puncture) to recover impact energy absorption, while embedded microcapsules heal microcracks to facilitate sealing. Modulation of the mechanical properties (1.4 GPa to 1.1 MPa stiffness) of the healing agent after curing is achieved by selection of compatible reactive acrylate monomers. Specimens are punctured and the impacted hole and surrounding damaged volume is restored by delivering the two‐stage healing agents to the site of damage via a microvascular network. Rapid gelling of two‐stage healing agents enables their retention in the damage region, while subsequent polymerization recovers structural performance. Impact recovery efficiency is assessed in terms of energy absorption, comparing reimpacted specimens to the initial impact. Recovery of impact energy absorption as high as 100% is observed for the optimal specimen design. Specimens are tested for sealing under static pressurization to monitoring leakage through the restored damage. A hybrid system incorporating both microvascular delivery of the two‐stage healing agents and microcapsules containing solvated epoxy enables sealing of 100% of specimens.

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“…To address this issue, a model flexible, laminated, self-healing bladder material is investigated to mediate the impact of small tears and punctures. Previous attempts at healing puncture damage have focused on ionomers [15] and space-filling gels [16]. A selfhealing response in ionomers initiates through the transfer of energy from a fast moving projectile, which is typically a few millimeters in diameter.…”

Section: Introductionmentioning

confidence: 99%

“…However, this healing occurs only when the damaged area is heated to near the melt temperature of the material [15]. A second self-healing system proposed by Nagaya et al utilizes a water-saturated expanding gel to automatically repair tires [16]. In this system, the polymeric gel is bonded between two layers of rubber on the inner surface of a tire and then saturated with water.…”

Section: Introductionmentioning

confidence: 99%

Self-healing flexible laminates for resealing of puncture damage

Beiermann

Keller

Sottos

2009

Smart Mater. Struct.

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A flexible self-healing system capable of healing puncture damage has been manufactured. Our material consists of three layers: a poly(dimethyl siloxane) (PDMS) composite, embedded with a self-healing microcapsule system, sandwiched between two layers of poly(urethane) coated nylon. The total structure thickness ranges between 0.84 and 1.5 mm. A protocol is established in which samples are damaged using a hypodermic needle or a razor blade, and a successful heal is defined as the ability to reseal the damage to withstand a pressure differential across the laminate of 103 kPa (∼1 atm). Trends in healing success are analyzed as a function of microcapsule size, self-healing layer thickness, and puncture diameter. Healing varied significantly with microcapsule size, with the maximum healing success rate (100% successfully healed) occurring in samples with 220 µm microcapsules and a puncture diameter of 0.49 mm. For this puncture size, an increase in microcapsule diameter corresponds to a decrease in healing efficiency. However, samples with larger microcapsules (up to 500 µm avg.) demonstrate more effective healing for larger puncture diameters, up to 1.61 mm. Additionally, healing increased with composite layer thickness, and decreased with increasing puncture hole size.

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Tire with Self-Repairing Mechanism

Cited by 12 publications

References 2 publications

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

Restoration of Impact Damage in Polymers via a Hybrid Microcapsule–Microvascular Self‐Healing System

Self-healing flexible laminates for resealing of puncture damage

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