Self-Healing Composites

Beschreibung

In this book, the self-healing of composite structures withshape memory polymer as either matrix or embedded suture issystematically discussed. Self-healing has been well known inbiological systems for many years: a typical example is theself-healing of human skin. Whilst a minor wound can be self-closedby blood clotting, a deep and wide cut needs external help bysuturing. Inspired by this observation, this book proposes atwo-step close-then-heal (CTH) scheme for healing wide-openedcracks in composite structures-by constrained shape recoveryfirst, followed by molecular healing. It is demonstrated that theCTH scheme can heal wide-opened structural cracks repeatedly,efficiently, timely, and molecularly. It is believed thatself-healing represents the next-generation technology and willbecome an engineering reality in the near future. The book consists of both fundamental background and practicalskills for implementing the CTH scheme, with additional focus onunderstanding strain memory versus stress memory and healingefficiency evaluation under various fracture modes. Potentialapplications to civil engineering structures, including sealant forbridge decks and concrete pavements, and rutting resistant asphaltpavements, are also explored. This book will help readers tounderstand this emerging field, and to establish a framework fornew innovation in this direction. Key features: * explores potential applications of shape memory polymers incivil engineering structures, which is believed to be unique withinthe literature * balanced testing and mathematical modeling, useful for bothacademic researchers and practitioners * the self-healing scheme is based on physical change of polymersand is written in an easy to understand style for engineeringprofessionals without a strong background in chemistry

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Guoqiang Li

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Bruchmechanik Failure Fracture Maschinenbau Materials Science Materialwissenschaften Mechanical Engineering Metalle u. Legierungen Metals & Alloys Physics Physik Polymer Physics Polymerphysik

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