Self-Healing Composites (PDF)

In this book, the self-healing of composite structures with
shape memory polymer as either matrix or embedded suture is
systematically discussed. Self-healing has been well known in
biological systems for many years: a typical example is the
self-healing of human skin. Whilst a minor wound can be self-closed
by blood clotting, a deep and wide cut needs external help by
suturing. Inspired by this observation, this book proposes a
two-step close-then-heal (CTH) scheme for healing wide-opened
cracks in composite structures-by constrained shape recovery
first, followed by molecular healing. It is demonstrated that the
CTH scheme can heal wide-opened structural cracks repeatedly,
efficiently, timely, and molecularly. It is believed that
self-healing represents the next-generation technology and will
become an engineering reality in the near future.

The book consists of both fundamental background and practical
skills for implementing the CTH scheme, with additional focus on
understanding strain memory versus stress memory and healing
efficiency evaluation under various fracture modes. Potential
applications to civil engineering structures, including sealant for
bridge decks and concrete pavements, and rutting resistant asphalt
pavements, are also explored. This book will help readers to
understand this emerging field, and to establish a framework for
new innovation in this direction.

Key features:

* explores potential applications of shape memory polymers in
civil engineering structures, which is believed to be unique within
the literature

* balanced testing and mathematical modeling, useful for both
academic researchers and practitioners

* the self-healing scheme is based on physical change of polymers
and is written in an easy to understand style for engineering
professionals without a strong background in chemistry