Steerable percussion air drilling system
Drilling casing into fractured hard rock formations in deep water using a water powered hammer drill
Perspektiven der Gruppenstrahlertechnik bei der Prüfung von Radsatzwellen mit Längsbohrung
Borehole inspection on aircraft structures using multifrequency EC-technique
Ultrasonic testing of railway axles from a borehole in axial direction
In-situ monitoring of fatigue crack growth at fastener holes using Rayleigh-like waves
Automatic X-ray crack inspection for aircraft wing fastener holes