Abstract
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.
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.
| Translated title of the contribution | Charakterisierung von Rissen in Manganstahl mit einer μ-Bolometerkamera und einem luftgekühlten Induktor |
|---|---|
| Original language | English |
| Number of pages | 8 |
| DOIs | |
| Publication status | Published - 7 Jun 2024 |
| Event | SPIE Defense + Commercial Sensing 2024: Thermosense XLVI - Gaylord National Resort & Convention Center, National Harbor, United States Duration: 22 Apr 2024 → 25 Apr 2024 Conference number: 13047 https://spie.org/DCS24/conferencedetails/thermosense#_=_ http://spie.org/DCS https://spie.org/DCS |
Conference
| Conference | SPIE Defense + Commercial Sensing 2024 |
|---|---|
| Abbreviated title | Thermosense |
| Country/Territory | United States |
| City | National Harbor |
| Period | 22/04/24 → 25/04/24 |
| Internet address |
Keywords
- inductive thermography
- crack detection
- crack characterization
- scanning inspection
- manganese stee
- railway inspection