Proceedings of the 2014 International Conference on Quantitative InfraRed Thermography 2014
DOI: 10.21611/qirt.2014.016
|View full text |Cite
|
Sign up to set email alerts
|

Surface crack detection using infrared thermography and ultraviolet excitation

Abstract: High signal to noise ratio is important within non-destructive testing. To achieve automatic inspection, including automatic evaluation, it is even more important. Infrared thermography is a suitable method for automatic inspection. One drawback with thermography of metallic structures is that due to shiny surfaces the reflectance is high and the signal to noise ratio will be low. This paper presents results from surface crack detection with thermography using ultraviolet excitation. The tested component is a … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

0
5
0

Year Published

2016
2016
2022
2022

Publication Types

Select...
2
1
1
1

Relationship

1
4

Authors

Journals

citations
Cited by 6 publications
(6 citation statements)
references
References 5 publications
0
5
0
Order By: Relevance
“…The glass lid of the lamp is removed in order to increase the intensity of infrared radiation illuminating the defected surface. Although increasing the intensity is not bene cial in thermography studies aiming to reveal subsurface defects, it does improve the detection limit for surface defects by increasing the contrast between defected and uniform areas (18). It is further chosen to move the halogen lamp manually during recording to vary the angle of incidence of the infrared radiation.…”
Section: Thermographymentioning
confidence: 99%
“…The glass lid of the lamp is removed in order to increase the intensity of infrared radiation illuminating the defected surface. Although increasing the intensity is not bene cial in thermography studies aiming to reveal subsurface defects, it does improve the detection limit for surface defects by increasing the contrast between defected and uniform areas (18). It is further chosen to move the halogen lamp manually during recording to vary the angle of incidence of the infrared radiation.…”
Section: Thermographymentioning
confidence: 99%
“…In the present study the heating is effectuated using a halogen lamp of 500 W. The glass lid of the lamp is removed in order to increase the intensity of infrared radiation illuminating the defected surface. Although increasing the intensity is not beneficial in thermography studies aiming to reveal subsurface defects, it does improve the detection limit for surface defects by increasing the contrast between defected and uniform areas [18]. It is further chosen to move the halogen lamp manually during recording to vary the angle of incidence of the infrared radiation.…”
Section: Thermographymentioning
confidence: 99%
“…Nevertheless, these methods have contact character and are quite time-consuming, so an alternative form of quality control are being searched for. Many authors regard the active thermography as alternative NDT approach, which fulfill foregoing expectations of non-contact and fast control [3,4,5,6]. The methods of active thermography such as lock-in or pulse thermography are widely used for example to detect delaminations, porosity and inhomogenities of composite materials in aerospace industry [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…For instance in [9] authors used black paint coating to achieve uniform and higher emissivity of the specimen surface. In case of metallic elements following methods are mentioned: vibrothermography, eddy currents excitation or laser spot thermography [4]. In [3] it was reported, that laser spot active thermography allowed detecting defects of a very small size: 5÷10 µm wide, although the presented examples dealt with cracks of width larger than 50 µm.…”
Section: Introductionmentioning
confidence: 99%