A calibration approach for smart structures using embedded sensors

The primary purpose of this paper is to present a calibration approach for using embedded sensors in composite structures or 'smart structures'. The sensor selected for the 'model sensor' is a fiberoptic sensor. Optical sensors and techniques as applied to the calibration and sensing of mechanical parameters in a composite structure are presented. Calibration approaches and techniques for using interferometric optical systems are discussed. The concept of a smart structure work station for the experiments and data processing is presented. The data processing may be thought of as consisting of two parts. First is the analysis of the raw data into usable parameters (stress, strain, temperature, etc.). Second is the synthesis of this basic information into a useful interpretation or set of conclusions concerning the condition of the structure. The software with real-time-analysis capability will have the form of an expert system tailored for that application.