Quality Control of Composite Material Pipes by Infrared Thermography

Abstract

The paper presents some aspects concerning the use of infrared thermography (IRT) in the evaluation of composite pipes integrity. Composite pipelines made up of glass fibres reinforced epoxy resins are increasingly used, especially in oil and gas industry, for their good mechanical properties, combined with reduced weight and excellent behaviour under hostile environment conditions. Taking into account that high reliability is required for such pipe networks, it is mandatory to choose reliable non-destructive inspection (NDI) methods to achieve efficient structural health monitoring. The main advantages of the IRT inspection are: non-contact and non-dangerous examination. In order to characterize the integrity of composites pipes, first of all the researches were interested in obtaining a set of reference images and then to examine the samples before and after the impact stress test. The conclusions point out the schemes and the optimal parameters of evaluation as well as the application limits of thermographic inspection

Thermal Shock in Sprayed Layers Observed Using Infrared Thermography

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Composite Materials Flaws Detection and Measurement by Infrared Thermography

“…Variability of results and measurement uncertainty often causes the discouragement of operators to estimate the size of defects by IRT inspection. To measure the defect dimensions is a subject of many actual studies [4,5,6]. Although, infrared thermography is limited to the detection of relatively shallow defects (a few millimeters under the surface), however, the most common defects of composite materials widely used in the aircraft, automotive, oil industries etc.…”

“…The theoretical study allows establishing the examination parameters [4,5]. The heat transfer by conduction is essential in differentiating the zones with defects found inside the material.…”

Thermography Testing of a Test Stand for Determining the Efficiency of Heat Recuperators

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