Capacity test of ultrasonic equipment used for crack detection in railway application

Projekt:

JVTC

Sammanfattning:
Manganese crossings are widely used in the railway sector because of their self-hardening properties, but one major disadvantage is that maintenance actions using condition monitoring of internal flaws are problematic to perform since manganese material is coarse-grained with internal reflections. In the present study, spike- and square-pulsed ultrasonic apparatus, as well as phased aperture and time-corrected gain, together with suitable probes, was tested on manganese material in order to increase the understanding of the signal-noise ratio and the capacity to detect deeply placed internal flaws. Some of the most important results indicate that square pulses and timecorrected gain will increase the signal-noise ratio and also increase the capacity to find deeply placed flaws

Författare: Jan Lundberg ; Alf Bohlin ; Malin Syk
Utgivare: Springer
Utgivningsdatum: 2011
Diarienummer: TRV 2011/58769
ISSN: 0975-6809
Antal sidor: 6
Språk: Engelska
Kontaktperson: Per Olof Larsson Kråik, UHjbs