Adaptronics and Smart Structures: Basics, Materials, Design, by Hartmut Janocha

By Hartmut Janocha

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Extra info for Adaptronics and Smart Structures: Basics, Materials, Design, and Applications, Second Edition

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The conduction anomalies found in PTC and VDR do not even exist in a single crystal system. The length scale for these mesoscopic structures is of the order of a few to a few tens of nanometers. The formation of domain patterns during a phase transition from a high symmetry phase to a low symmetry phase is a reflection of the system trying to recover those lost symmetries. The number of domain states or variants in the low temperature phase is equal to the ratio of the number of operations in the high and low symmetry groups.

2). Intrinsic sensing relies on changes in the light transmission characteristics of the optical fiber. The use of optical fibers to perform intrinsic sensing in smart structures has known an accelerated development in recent years in line with similar developments in the use of optical fiber for data transmission and communications. Fiber Bragg grating sensors are among the most common intrinsic optical fiber sensors. Strain sensors, temperature sensors, liquid level sensors, pressure sensors, humidity sensors, have been demonstrated.

This interaction will allow the user/designer/builder to design a system to perform the function desired with the generic enabling system within the 24 2 Concepts of Adaptronic Structures host material. An example can be postulated by focusing on one aspect of the material system, the sensor system. In this scenario, a sensor network is built into the system with many more sensors than are needed by any one application, but by means of adaptive architecture, these sensors can be connected together, or turned off, or turned on, to create the specific system desired.

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