Thermography is an investigation technique belonging to the category of non-destructive tests (PND), in which the body to be analyzed does not come into contact with the relevant device which, by sampling in a portion of the electromagnetic spectrum the thermal energy emitted in a given wavelength field, returns a two-dimensional representation through an image, called "thermogram"; therefore, based on the identification of the distribution anomalies of the surface temperatures of the object in question, when thermally stressed, as a result it returns a photographic mapping of the heat, emitted by a body.
USE OF THERMOGRAPHY
Thermography is a precise method of inspection based on the assumption that almost all equipment and components overheat when under stress before being damaged. It is therefore possible to carry out diagnostics and determine – in numerous fields of application – the initial, momentary state of an electrical or mechanical component, and establish a predictive governance to carry out periodically that analyses the component’s efficiency and functionality status.
Thermography is considered certified when it is carried out in accordance with the principles of the standards UNI EN 16714 and UNI EN 473:2008. It must be carried out by personnel trained and certified according to the UNI EN ISO 9712 2012 standard at the second and third levels, thus fit to carry out the survey and issue a thermographic report that can be used for statutory purposes.
USE OF CERTIFIED THERMOGRAPHY IN THE INDUSTRIAL SECTOR
As for monitoring and diagnosing of the state of machinery (as per UNI ISO 18434-1: 2011), thermography makes it possible to conduct a predictive maintenance program carrying out careful evaluations of the operating conditions of electrical, electronic and mechanical applications, and comparing them to the historical operating temperatures or to readings of similar equipment, in order to establish whether a significant increase in temperature could compromise the reliability of the components or the safety of the system; in particular, pertinent applications include the following:
USE OF CERTIFIED THERMOGRAPHY IN THE CIVIL SECTOR
The same investigation technique can be applied to superficial thermal variations, making it possible – in civil applications – to uncontestably determine the thermal state of a building, both in masonry and in wood, with the following uses: