Fibre Optic Strain Gauges are utilised as essential structural health monitoring tools in various industries. They are based on Fibre Bragg Grating (FBG) technology, which minimises noise, eliminates the need for electrical power supply for operation and enables long-range measurements.
When an external compression or stretching force is induced in the fibre, it is subjected to positive or negative strain. As a result, the interval at which the fibre-grating interference are placed will change. It will lengthen if the fibre is stretched and shortens if the fibre is compressed. This change will alter the time required for the reflected light to travel back which also changes the Bragg’s wavelength. The change in the Bragg’s wavelength is proportional to the strain induced in the fibre. The results can be transmitted to the Fibre-Bragg Interrogator for analysis and signal conditioning.
Fibre Optic Strain Gauges Overview
OBEG-120-HT | High Temperature Fibre Optic Strain Sensor
The OBEG-120-HT is suitable for strain measurement at high temperature up to 200oC such as integration into hot tar or
OBSG-120 | Boundable Optical Fibre Strain Gauges
The OBSG-120 is a fibre-bragg grating strain sensor designed from glass-fibre reinforced plastic. It is easy to handle and installed
OBSG-120-CE | Fibre Bragg Grating Strain Gauge for Concrete
The OBSG-120 is a fibre-bragg grating strain sensor designed for strain measurement in concrete. It is made from glass-fibre reinforced
OBSG-60 | Fibre Optic Strain Gauge for Composites
The OBSG-60 is an optical fibre optic sensor designed to measure strain on composite materials. It is designed with optimum
OBSGW-100 | Welded or Bolted Optical Strain Gauge
The OBSGW-100 is designed to allow for the sensor to be bolted or welded to the intended structure. The sensors