Loveday, Philip WLong, Craig S2014-08-152014-08-152014-01Loveday, P.W and Long, C.S. 2014. Feasibility of detecting cracks in rail track at long range using guided wave ultrasound. In: 9th South African Conference on Computational and Applied Mechanics (SACAM), Somerset West, 14–16 January 2014http://hdl.handle.net/10204/75999th South African Conference on Computational and Applied Mechanics (SACAM), Somerset West, 14–16 January 2014A transducer array comprising four transducers was developed and used to perform pulse – echo measurements on a heavy duty welded rail track. A signal processing algorithm, which uses properties of the propagating modes computed using semi-analytical finite element modelling, was developed. The algorithm was used to process the measurement results and a particular mode of propagation proved to be effective. Defects could be detected at long range in relatively new rail while detecting defects in old rail with frequent welded repairs is very difficult. It is expected that transverse cracks in the rail head will be detectable at a range of 500m prior to complete breakage in relatively good condition rail.enGuided wavesDefect detectionRail tracksConference PresentationLoveday, P. W., & Long, C. S. (2014). Feasibility of detecting cracks in rail track at long range using guided wave ultrasound. SACAM 2014. http://hdl.handle.net/10204/7599Loveday, Philip W, and Craig S Long. "Feasibility of detecting cracks in rail track at long range using guided wave ultrasound." (2014): http://hdl.handle.net/10204/7599Loveday PW, Long CS, Feasibility of detecting cracks in rail track at long range using guided wave ultrasound; SACAM 2014; 2014. http://hdl.handle.net/10204/7599 .TY - Conference Presentation AU - Loveday, Philip W AU - Long, Craig S AB - A transducer array comprising four transducers was developed and used to perform pulse – echo measurements on a heavy duty welded rail track. A signal processing algorithm, which uses properties of the propagating modes computed using semi-analytical finite element modelling, was developed. The algorithm was used to process the measurement results and a particular mode of propagation proved to be effective. Defects could be detected at long range in relatively new rail while detecting defects in old rail with frequent welded repairs is very difficult. It is expected that transverse cracks in the rail head will be detectable at a range of 500m prior to complete breakage in relatively good condition rail. DA - 2014-01 DB - ResearchSpace DP - CSIR KW - Guided waves KW - Defect detection KW - Rail tracks LK - https://researchspace.csir.co.za PY - 2014 T1 - Feasibility of detecting cracks in rail track at long range using guided wave ultrasound TI - Feasibility of detecting cracks in rail track at long range using guided wave ultrasound UR - http://hdl.handle.net/10204/7599 ER -