Fiber-Bragg-Grating Coupled Magnetostrictive Sensors for Magnetic Tracking of Biomedical Implants

Magnetostrictive strain sensors with high spinorbit coupling have been integrated with Fiber-Bragg-Grating sensors wherein the gap within the gratings varies with strain within the encapsulating magnetostrictive material. Terfenol-D has been chosen as the mm sized magnetostrictive material which exhibits the largest known bulk magnetostriction....

A new approach for structural health monitoring by applying anomaly detection on strain sensor data

Structural Health Monitoring (SHM) systems help to monitor critical infrastructures (bridges, tunnels, etc.) remotely and provide up-to-date information about their physical condition. In addition, it helps to predict the structure’s life and required maintenance in a cost-efficient way. Typically, inspection data gives insight in the structural...

Characterization of a photonic strain sensor in silicon-on-insulator technology

Characterization of the effects that play a role in photonic strain sensors in silicon-on-insulator technology

Recently there has been a growing interest in sensing by means of optical microring resonators in photonic integrated circuits (PIC) that are fabricated in silicon-on-insulator (SOI) technology. Taillaert et al. proposed the use of a waveguide based ring resonator as a strain gauge. However, the strong lateral confinement of the light in SOI...

Silicon on insulator photonic integrated sensors: On-chip sensing and interrogation

In this paper, we present two examples of photonic sensors based on ring resonators in Silicon-on-Insulator (SOI) waveguide technology as mass production compatible sensing units for the measurement of: strain, and ultrasound. Furthermore, the sensing units are characterized in extreme conditions to validate their robustness in harsh industrial...

Laboratory validation of MEMS-based sensors for post-earthquake damage assessment image

The evaluation of seismic damage is today almost exclusively based on visual inspection, as building owners are generally reluctant to install permanent sensing systems, due to their high installation, management and maintenance costs. To overcome this limitation, the EU-funded MEMSCON project aims to produce small size sensing nodes for...