Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"Healing Agent"”.
-
Development of Micro and Nanostructured Materials for Interfacial Self -Healing
To investigate self-healing of an interface, a method is developed for sequestration of healing agent filled microcapsules and catalyst to the reinforcement-matrix interface. Microbond specimens, consisting of a single self-healing functionalized fiber embedded in a microdroplet of epoxy, are used …
-
Healing of complex damage modes in model composites
Self-healing has potential to extend the usable lifetime of composite materials. Introducing self-healing systems to fiber reinforced composites has proven to be difficult due to the high temperatures and pressures of processing as well as the requirement that the delivery scheme for the healing …
-
Biomimetic vascular self-healing systems for cementitious materials
… resilient structures. A vascular system houses healing agent within its interconnected networks which are incorporated within a cement matrix. It is perhaps the only self-healing approach that has the capability to address different scales of damage in cementitious materials. The main aim of the …
-
Self-healing of impact damage in vascular fiber-reinforced composites
… an out-of-plane impact event using vascular self-healing technologies. To date, the critical damage modes which occur during out-of-plane impact that most significantly contribute to reductions in post-impact performance have not been identified and methods for delivering healing agents to those …
-
Development of self-healing techniques for fiber reinforced composites
… repair defects deep inside the material. Self-healing polymers is an approach which has not yet been incorporated to commercial composites but promises to face some principal weak points. This smart technology aims to in-situ repair matrix cracks and matrix/reinforcement debonding and thus to …
-
Crack-resistant and self-healing cut-off wall materials incorporating polymers and minerals
… PhD research develops crack-resistant and self-healing cut-off wall materials incorporating polymers and minerals. The overall performance of four additives, including superabsorbent polymers (SAPs), oil sorbent polymers, reactive magnesia (MgO) pellets, and microencapsulated sodium silicate in …
-
Polydimethylsiloxane-Based Self -Healing Composite and Coating Materials
We demonstrate the bulk self-healing property of a polymer composite composed of a phase-separated PDMS healing agent and a microencapsulated organotin catalyst by chemical and mechanical testing. Another significant research focus is on self-healing polymer coatings which prevent corrosion of a …
-
Microvascular strategies for damage restoration
… act as pathways for mass transport of liquid healing agents to damage regions that intersect the vasculature. Microvascular self-healing has proven effective in restoring fracture toughness and modulus by re-bonding the surfaces of damage-induced microcracks; however, large damage volumes …
-
Bioinspired microvascular self-healing in polymers and composites
… materials provides an effective pathway to self-healing and ultimately mechanical stasis. In polymers, autonomous release of reactive chemistries from ruptured vasculature offers distinct advantages over prior self-healing approaches; largely, the capacity to achieve macro-scale fracture recovery …
-
Resistive heating for self-healing materials based on ionomeric polymers
Self-healing materials have received considerable development in the last decade. Recent results have demonstrated healing in polymeric materials via a chemical reaction using a healing agent or response to thermal treatment. The goal of this research is to develop a new composite material, for …
-
Development of multifunctional polymer composites with self-healing capability
Self-healing is an inherent property of living organisms, which poses a significant challenge for materials science. In recent years, self-repair mechanisms observed in plants have been recognized as promising models for the development of bio-inspired self-healing materials. The potential of …
-
Thermally/Mechanically Responsive Polymeric Composites with Shape Memory/Self-Healing Properties
… featuring triple shape memory and self-healing properties as we now describe.</p> <p>In Chapter 3, we report an investigation into the preparation and characterization of shape memory assisted self-healing (SMASH) coatings utilizing shape memory (SM) response of a glassy amorphous epoxy …
-
Autonomic healing of low-velocity impact damage in woven fiber-reinforced composites
… In this work, a microcapsule-based self-healing epoxy is used in woven fiber-reinforced composite panels for the repair of matrix damage imparted by low-velocity impact. The initial work focused on self-healing in plain 2D woven S2 glass laminates with an epoxy matrix. The self-healing …
-
Laboratory and field investigation of the performance of novel microcapsule-based self-healing concrete
… materials, does possess some inherent self-healing capacity and is able to heal certain-size cracks autogenously. This self-healing capability is very limited and therefore researchers have attempted to improve upon it by using a variety of techniques. In particular, the use of engineered …
-
Development and characterisation of biosynthetic hydrogels for wound management applications
… re-epithelialisation, thus promoting wound healing. Hydrogels have attracted vast interest as moist wound-responsive dressing materials. Hydrogels facilitate wound healing due to unique properties and 3D network structures which allows encapsulation of healing agents. In the current study, …
-
NANOFORMULATION OF BUDDLEJA DAVIDII EXTRACT: DEVELOPMENT AND CHARACTERIZATION OF LIPOSOMES AND NANOFIBERS FOR WOUND HEALING APPLICATION
… verbascoside (VRB) was used as a potential wound healing agent in nanocarrier formulations for targeted delivery. We aimed to present a literature review, as well as experimental approaches involving two different nanocarrier formulations: liposomes and electrospun nanofibers, in understanding …
-
Computational modeling and simulation of composite materials based on tomographic images
… micro-channnels through which a coolant or self-healing agent can be circulated. Such materials have important applications to aircraft, electronics, and many other situations where active management of the thermal environment is desirable. Conventional computational analysis of such materials is …
-
Self-healing materials and multinozzle printheads with embedded microvascular networks
… attributes in engineering contexts such as self-healing materials, microfluidic temperature regulation, and tissue engineering is gaining significant attention. Yet, the ability to design and replicate synthetic microvascular networks remains a challenge with limited progress to date. The …
-
Novel encapsulation technologies for small size-scale self-healing applications
Self-healing technology offers an autonomic route to repairing damage in advanced polymers to extend their lifetime. A variety of self-healing systems have been developed for mechanical self-healing, protective coatings, and electronic self-healing. These self-healing systems rely on functional …
-
Solvent-based self-healing approaches for fiber-reinforced composites
… or costly to repair. The incorporation of self-healing functionality in composite materials has the potential to greatly extend material lifetime and reliability. Although there has been remarkable progress in self-healing polymers over the the past decade, self-repair in fiber-reinforced …
Page 1 of 2