Application of the Nondestructive Evaluation (NDE) Method to Evaluate the Sheared Edge Quality and Edge Cracking

Gu, Jingjing; Pathak, Nikky; Freed, Shaun L.; Todorov, Evgueni; Kim, H.

doi:10.1007/978-3-030-75381-8_132

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2022

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“…It is widely in use to verify various NDT methods: ultrasound, eddy current, etc. [ 28 , 29 , 30 ]. DIC is also an effective complement to AE testing of concrete [ 31 ], reinforced concrete [ 32 , 33 ], metals [ 34 , 35 ], welded joints [ 36 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Combined Acoustic Emission and Digital Image Correlation for Early Detection and Measurement of Fatigue Cracks in Rails and Train Parts under Dynamic Loading

Мачихин

Poroykov

Bardakov

et al. 2022

Sensors

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Fatigue crack in rails and cyclic-loaded train parts is a contributory factor in multiple railroad accidents. We address the problem of crack detection and measurement at early stages, when total failure has not yet occurred. We propose to combine acoustic emission (AE) testing for prediction of crack growth with digital image correlation (DIC) for its accurate quantitative characterization. In this study, we imitated fatigue crack appearance and growth in samples of railway rail and two train parts by cyclic loading, and applied these two techniques for inspection. Experimental results clearly indicate the efficiency of AE in the early detection of fatigue cracks, and excellent DIC capabilities in terms of geometrical measurements. Combination of these techniques reveals a promising basis for real-time and non-destructive monitoring of rails and train parts.

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