Aerospace Requirements

Abstract

This chapter covers the overview of requirements arising in the aerospace industry for operating a structural health monitoring (SHM) system. The requirements are based on existing standards and guidelines and include both requirements on the physical components of the system (such as sensors, data acquisition systems and connectors) and their functional requirements (such as reliability, confidence measure and probability of detection). Emphasis has been given to on-board and ground-based components because they have different functionality requirements. An important factor in the reliability of the system is the effect of the environment and operational loads on the reliability of the diagnosis and, consequently, prognosis. The recommended guidelines for testing the reliability of the system under varying operational conditions are presented. This chapter is then finalized by reporting on methodologies for optimal sensor number and placement, based on different sensor technologies and different optimization algorithms.

Reliability Assessment of Wireless Sensor Networks by strain-based Region Analysis for Redundancy Estimation in Measurements on the Example of an Aircraft Wing Box

“…Considering for example SHM systems in aerospace applications, the whole system must survive different harsh environmental and operational conditions around 20 years. So, the systems service life should be comparable to the life of the monitored component or should be designed repairable [15]. But besides this hardware point of view on the lifetime, the SNs reliability is also determined by its capability to ensure the required data quality.…”

Development of innovative techniques for lamb wave-based structural health monitoring systems in aeronautics

“…Piezoelectric transducer-based SHM in aeronautics has been largely studied for more than 20 years but, while the technology has achieved promising results in the laboratory, the transition to industrial applications and civil aircraft has been not successful enough. An important number of limitations are present [49]- [51], and they are as follows:…”

“… Airworthiness: this is one of the most important points of SHM systems success, and is composed of the following factors [51]:…”