Multi-function structure

Source: Wikipedia, the free encyclopedia.

A multi-function material is a composite material. The traditional approach to the development of structures is to address the load-carrying function and other functional requirements separately. Recently, however, there has been increased interest in the development of load-bearing materials and structures which have integral non-load-bearing functions, guided by recent discoveries about how multifunctional biological systems work.[1]

Introduction

With conventional structural materials, it has been difficult to achieve simultaneous improvement in multiple structural functions, but the increasing use of

carbon nanotubes for instance.[2][3]

Functions

Among the many functions that can be attained are power transmission,

composite materials where the composition or the microstructure are locally varied so that a certain variation of the local material properties is achieved.[4][5]
However, functionally graded materials can be designed for specific function and applications.

Many applications such as re-configurable aircraft wings, shape-changing aerodynamic panels for flow control, variable geometry engine exhausts, turbine blade, wind turbine configuration at different wind speed, microelectromechanical systems (micro-switches), mechanical memory cells, valves, micropumps, flexible direction panel position in solar cells, innovative architecture (adaptive shape panels for roofs and windows), flexible and foldable electronic devices and optics (shape changing mirrors for active focusing in adaptive optical systems).

References

  1. .
  2. ^ "Sensors and actuators based on carbon nanotubes and their composite" J. Composites Science and Technology 68 (2008) 1227–1249
  3. ^ Challenges and opportunities in multifunctional nanocomposite structures for aerospace applications. MRS Bull 2007;32(4):324-34
  4. ISSN 2352-4928
    .
  5. ^ O. Kolednik, Functionally Graded Materials, 2008 Archived 2010-08-20 at the Wayback Machine