TY JOUR TI Equivalent Sensitivity Setting During Ultrasonic Inspection of Steel Butt Welded Joints KW nondestructive testing KW ultrasonic inspection KW pulse-echo method KW weld joint KW sensitivity setting KW flat cylindrical reflector KW hemispherical reflector JO NDT World AU Kireev, A.. PY 2016 IS 19 PB LLC SVEN