PSI - Issue 5

Yui Izumi et al. / Procedia Structural Integrity 5 (2017) 683–688 Yui Izumi / Structural Integrity Procedia 00 (2017) 000 – 000

688

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4. Conclusion

In this paper, the applicability of the inspection technique based on temperature gap measurement to back-surface crack is investigated by the laboratory testing. In the results, it was found that temperature gap appears around the back surface fatigue crack indicating thermal insulation effect by the crack. However, when crack width was small, there was no clear temperature gap at the crack due to heat conduction between the crack faces.

References

Mizokami, Y., Kobayashi, Y., Izumi, Y., Sakagami, T., 2015. Remote NDT technique for through-weld crack in orthotropic steel deck by temperature gap measurement using infrared thermography, Steel Construction Engineering, 22, 47-56. Izumi, Y., Sakagami, T., Moriyama, A., Mizokami, Y., Sannomiya, H., 2016. Detection of semi-elliptical internal crack based on temperature gap measurement, Proceedings of the 10 th Asia-Pacific Conference on Fracture and Strength, 229-230.