Testing of Structures
Testing for deformation of a structure
Two of the most common types of sensor used to test for deformation of a structure, are Strain Gauge and Absolute Displacement sensors.
Both have their place in structural testing and they can be brought together using Orbit®, Solartron Metrology’s Multi Channel data processing system.
Free core LVDT based transducers can be ideal for testing for deformation and the recovery of a structure that has been stressed.
There is no friction between the two components that make up the sensor. The sensor has virtually no hysteresis to affect recovery measurements. The sensor is not affected by shock loading of the structure.
There is the deadweight of the core and carrier to consider, but depending on the size of the structure or the size of the sensor, the effect is normally minimal.
Being an Absolute Displacement sensor, it will give its absolute position after a power down, which is often useful during long term testing.
The Orbit® multi drop data acquisition system can take readings from a mix of; Displacement, Strain, Pressure and Temperature sensors if required
Measuring the change of the shapre of a structure and its recovery after being stressed is a common problem. Digital versions of Solartron Metrology's Displacement Transducers and the Orbit Network can be a cost effective and reliable solution.
Testing for deformation of a vessel
By fixing one end of a wire and taking it around a vessel and attaching the other end to the core of a displacement transducer. Any change in the diameter of the vessel is related to the position of the transducer core.
The output from a pressure sensor and displacement transducer can be taken into the Orbit® Network or the SI 3300 series of Display/Controllers.