Smart Self-Healing Material Systems Using Inductive and Resistive Heating

Duenas, Terrisa; Enke, Andrew; Chai, Karen; Castellucci, Matt; Sundaresan, Vishnu-Baba; Wudl, Fred; Murphy, Erin B.; Mal, Ajit; Alexandar, James R.; Corder, Aaron; Ooi, Teng K.

doi:10.1021/bk-2010-1050.ch004

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…Magpol consists of magnetic Mn-Zn ferrite nanoparticle filler in a commercial poly (ethylene-co-vinyl acetate) (EVA) thermoplastic matrix. The magnetic filler can be used to trigger healing by locally heating the composite by employing an external alternating magnetic field (AMF) 37 38 39 . The thermoplastic matrix ensures multiple strain sensing cycles and self healing through a shape memory mechanism.…”

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confidence: 99%

Magnetic Field Triggered Multicycle Damage Sensing and Self Healing

Ahmed

Ramanujan

2015

Sci Rep

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Multifunctional materials inspired by biological structures have attracted great interest, e.g. for wearable/ flexible “skin” and smart coatings. A current challenge in this area is to develop an artificial material which mimics biological skin by simultaneously displaying color change on damage as well as self healing of the damaged region. Here we report, for the first time, the development of a damage sensing and self healing magnet-polymer composite (Magpol), which actively responds to an external magnetic field. We incorporated reversible sensing using mechanochromic molecules in a shape memory thermoplastic matrix. Exposure to an alternating magnetic field (AMF) triggers shape recovery and facilitates damage repair. Magpol exhibited a linear strain response upto 150% strain and complete recovery after healing. We have demonstrated the use of this concept in a reusable biomedical device i.e., coated guidewires. Our findings offer a new synergistic method to bestow multifunctionality for applications ranging from medical device coatings to adaptive wing structures.

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confidence: 99%

Magnetic Field Triggered Multicycle Damage Sensing and Self Healing

Ahmed

Ramanujan

2015

Sci Rep

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“…Several pulses of about 100 µs were sufficient to completely restore the integrity of the material, with a crack of several hundred micrometres long. Both resistive and inductive approached could be efficient for healing structural steels …”

Section: Lab‐tested Self‐healing Materialsmentioning

confidence: 99%

Advanced Materials for Next‐Generation Spacecraft

et al. 2018

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Spacecraft are expected to traverse enormous distances over long periods of time without an opportunity for maintenance, re‐fueling, or repair, and, for interplanetary probes, no on‐board crew to actively control the spacecraft configuration or flight path. Nevertheless, space technology has reached the stage when mining of space resources, space travel, and even colonization of other celestial bodies such as Mars and the Moon are being seriously considered. These ambitious aims call for spacecraft capable of self‐controlled, self‐adapting, and self‐healing behavior. It is a tough challenge to address using traditional materials and approaches for their assembly. True interplanetary advances may only be attained using novel self‐assembled and self‐healing materials, which would allow for realization of next‐generation spacecraft, where the concepts of adaptation and healing are at the core of every level of spacecraft design. Herein, recent achievements are captured and future directions in materials‐driven development of space technology outlined.

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“…Resistive heating methods have been explored using Surlyn thermoplastic composite systems similar to EMAA, which can sense the damage and locally heat the thermoplastic causing viscous flow and thus healing [55][56][57]. A related approach using ionomer [58] as the HA and a mendable cross-linked network composites used low concentrations of nano-iron oxide particles dispersed in the ionomer to enable healing via induction methods to locally heat the ionomer.…”

Section: Smart Compositesmentioning

confidence: 99%