The peak stress for the high-speed rotating blade is time-varying and space-varying under
multi-mode vibration, which affects the measurement accuracy of dynamic strain. The full …

This paper compares two fibre optic sensing techniques for vibration characterisation:(a)
optical fibre Bragg grating (FBG) strain gauges and (b) a novel direct fibre optic shape …

This paper presents the development, analysis and application of a fiber Bragg grating
(FBG) array for two-dimensional (2D) shape reconstruction in a cantilever beam. The …

For the integrated stealth issue of ducted tail rotor noise radiation and radar scattering, a
comprehensive optimization method based on high frequency electromagnetic calculation …

Shape sensing, which is the real-time monitoring of deformed shapes using discrete surface
strain, is a fundamental approach to ensure structural safety, reliability, and affordability …

The dynamic displacement is considered to be an important indicator of structural safety,
and becomes an indispensable part of Structural Health Monitoring (SHM) system for high …

The conventional displacement-blade tip timing (D-BTT) measurements often rely on Once-
Per-Revolution (OPR) sensors to compute expected or theoretical time of arrival (TOA) …

The dynamic strain/stress measurement of blades provides an effective method to anticipate
fatigue life and investigate of failure causes. Unlike the blade strain peak is fixed during …

The interaction between the rotating blades and the external fluid in non-axial flow
conditions is the main source of vibratory loads on the main rotor of helicopters. The …

Although relevant examples of systems devoted to shape sensing, damage detection, load
identification, etc., do exist, even based on fiber optic sensors, they are barely suited for …