Self-Healing Fiber Composites With a Self-Pressurized Healing System

The amounts of the components in a microcapsule self-healing system significantly impact the basic performance and self-healing performance of concrete. In this paper, an orthogonal experimental design is used to investigate the healing performance of microcapsule self-healing concrete under different pre-damage loads. The strength recovery performance and sound speed recovery performance under extensive damage are analyzed. The optimum factor combination of the microcapsule self-healing concrete is obtained. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) are carried out on the concrete samples before and after healing to determine the healing mechanism. The results show that the healing effect of self-healing concrete decreases with an increase in the pre-damage load, and the sound speed recovery rate increases with an increase in the damage degree. The influence of the sodium silicate content on the compressive strength and compressive strength recovery rate of the self-healing concrete increases, followed by a decrease. The optimum combination of factors of the microcapsule self-healing system is 3% microcapsules, 30% sodium silicate, and 15% sodium fluosilicate. The results can be used for the design and preparation of self-healing concrete.

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The influence of MgO-type expansive agent incorporated in self-healing system of Engineered cementitious Composites

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.05.109 ◽

2017 ◽

Vol 149 ◽

pp. 164-185 ◽

Cited By ~ 23

Author(s):

Mohamed A.A. Sherir ◽

Khandaker M.A. Hossain ◽

Mohamed Lachemi

Keyword(s):

Cementitious Composites ◽

Self Healing ◽

Engineered Cementitious Composites ◽

Expansive Agent ◽

Healing System

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Framework for Identifying Agent's Role in Multi-agent Based Self-healing System

2018 Third International Conference on Informatics and Computing (ICIC) ◽

10.1109/iac.2018.8780476 ◽

2018 ◽

Author(s):

Falahah ◽

Iping S Suwardi ◽

Kridanto Surendro

Keyword(s):

Self Healing ◽

Agent Based ◽

Healing System ◽

Multi Agent

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A probabilistic approach for design and certification of self-healing advanced composite structures

Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability ◽

10.1177/1748006x10397847 ◽

2011 ◽

Vol 225 (4) ◽

pp. 435-449 ◽

Cited By ~ 5

Author(s):

H R Williams ◽

R S Trask ◽

I P Bond

Keyword(s):

Composite Structures ◽

High Performance ◽

Probabilistic Approach ◽

Healing Time ◽

Self Healing ◽

Structural Failure ◽

Healing System ◽

Order Of Magnitude ◽

Damage Tolerant

Design and certification of novel self-healing aerospace structures was explored by reviewing the suitability of conventional deterministic certification approaches. A sandwich structure with a vascular network self-healing system was used as a case study. A novel probabilistic approach using a Monte Carlo method to generate an overall probability of structural failure yields notable new insights into design of self-healing systems, including a drive for a faster healing time of less than two flight hours. In the case study considered, a mature self-healing system could be expected to reduce the probability of structural failure (compared to a conventional damage-tolerant construction) by almost an order of magnitude. In a risk-based framework this could be traded against simplified maintenance activity (to save cost) and/or increased allowable stress (to allow a lighter structure). The first estimate of the increase in design allowable stresses permitted by a self-healing system is around 8 per cent, with a self-healing system much lighter than previously envisaged. It is thought these methods and conclusions could have wider application to self-healing and conventional high-performance composite structures.

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Full Recovery of Fracture Toughness Using a Nontoxic Solvent‐Based Self‐Healing System

Advanced Functional Materials ◽

10.1002/adfm.200800300 ◽

2008 ◽

Vol 18 (13) ◽

pp. 1898-1904 ◽

Cited By ~ 187

Author(s):

Mary M. Caruso ◽

Benjamin J. Blaiszik ◽

Scott R. White ◽

Nancy R. Sottos ◽

Jeffrey S. Moore

Keyword(s):

Fracture Toughness ◽

Full Recovery ◽

Self Healing ◽

Healing System

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Integrated Sensing, Monitoring and Healing of Composite Systems

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.101.62 ◽

2016 ◽

Vol 101 ◽

pp. 62-68

Author(s):

Oluwafemi Sedoten Kuponu ◽

Visakan Kadirkamanathan ◽

Bishakh Bhattacharya ◽

Simon Alexander Pope

Keyword(s):

Composite Materials ◽

Failure Rate ◽

Feedback Loop ◽

Healing Rate ◽

Research Community ◽

Self Healing ◽

Thin Line ◽

Composite Systems ◽

Damage Rate ◽

Healing System

The ability of a material to recover its nominal properties through self-healing is gaininginterest in the research community. However, current approaches remain predominantly passive incounteracting the effect of damage. As a result, healing only begins when the material has occurreddamage and typically there is a mismatch between the healing and damage rate. For applications suchas aircraft, where there is a thin line between functionality and non-functionality, these limitations maybe inherently restrictive. A self-healing system that combines a prognosis unit to predict and estimatethe failure rate and an active self-healing system that matches the healing rate to the estimated failurerate using a feedback loop, has the potential to overcome these limitations. In this paper we proposesuch a system and present results for its application to composite materials.

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