TY - CONF

T1 - Crack characterization in manganese steel using a μ-bolometer camera and an air-cooled inductor

AU - Tuschl, Christoph

AU - Oswald-Tranta, Beata

AU - Dornig, Peter

AU - Künstner, David

AU - Pötz, Melanie

AU - Eck, Sven

N1 - Conference code: 13047

PY - 204/6/7

Y1 - 204/6/7

N2 - Due to beneficial mechanical properties, cast manganese (Mn13) steel is used for premium grade railway turnout frogs worldwide. However, its coarse-grain structure makes common non-destructive testing (NDT) methods for defect detection used in this industry very difficult to apply. Inductive thermography is a NDT method well suited for this problem.Scanning inductive thermography is used to localise surface defects on the running surfaces of turnout frogs. Once localised, we propose additional static measurements to characterise the detected surface defects with respect to crack length, depth and penetration angle. Simulations with ANSYS Multiphysics are conducted to study the influence of different crack geometries as well as the influence of different excitation parameters. Validation measurements on samples with defined crack geometries are conducted. The results of both, simulation and measurements on samples, are used to characterize surface defects on actual manganese turnout frogs.

AB - Due to beneficial mechanical properties, cast manganese (Mn13) steel is used for premium grade railway turnout frogs worldwide. However, its coarse-grain structure makes common non-destructive testing (NDT) methods for defect detection used in this industry very difficult to apply. Inductive thermography is a NDT method well suited for this problem.Scanning inductive thermography is used to localise surface defects on the running surfaces of turnout frogs. Once localised, we propose additional static measurements to characterise the detected surface defects with respect to crack length, depth and penetration angle. Simulations with ANSYS Multiphysics are conducted to study the influence of different crack geometries as well as the influence of different excitation parameters. Validation measurements on samples with defined crack geometries are conducted. The results of both, simulation and measurements on samples, are used to characterize surface defects on actual manganese turnout frogs.

KW - inductive thermography

KW - crack detection

KW - crack characterization

KW - scanning inspection

KW - manganese stee

KW - railway inspection

U2 - 10.1117/12.3013393

DO - 10.1117/12.3013393

M3 - Paper

T2 - SPIE Defense + Commercial Sensing 2024

Y2 - 22 April 2024 through 25 April 2024

ER -