Ultrasonic measurements of internal flaws in manganese crossings Part 1: Capacity lest of ultrasonic equipment

• 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 time-corrected gain will increase the signal-noise ratio and also increase the capacity to find deeply placed flaws.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Annan samhällsbyggnadsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Other Civil Engineering (hsv//eng)

Keyword

Condition monitoring

Crossings

Flaws

Maintenance

Manganese

Railway

Signal-to-noiseratio

Ultrasonic measurement

Operation and Maintenance Engineering

Drift och underhållsteknik

Onboard Space Systems

Rymdtekniska system

Publication and Content Type

ref (subject category)

art (subject category)