Engineering topics

Bulthuis, Ronald V.

Publications and source records attributed to Bulthuis, Ronald V..

3 records

NASA NTRS1990

Switching X-Ray Tubes Remotely

Convenient switch and relay circuit reduces risk of accidents. Proposed switching circuit for x-ray inspection system enables operator to change electrical connections to x-ray tubes remotely. Operator simply flips switch on conveniently-located selector box to change x-ray heads. Indicator lights on selector box show whether 160 or 320-kV head connected. Relays in changeover box provides proper voltages and coolants. Chance of making wrong connections and damaging equipment eliminated.

Bulthuis, Ronald V.↗

NASA NTRS1988

Real-Time X-Ray Inspection

X-ray imaging instrument adapted to continuous scanning. Modern version of fluoroscope enables rapid x-ray inspection of parts. Developed for detection of buckling in insulated ducts. Uses radiation from radioactive gadolinium or thallium source. Instrument weighs only 6 1/2 lb. Quickly scanned by hand along duct surface, providing real-time image. Based on Lixiscope, developed at Goddard Space Flight Center.

Bulthuis, Ronald V.↗

NASA NTRS1988

Holding X-Ray Film Inside Ducts

Radiographic inspection of welds in walls of nonmagnetic ducts made easy by new film holder. X-Ray film inside duct held by interior and exterior magnets. Tether used to move holder and to retrieve it from inside duct.

Bulthuis, Ronald V.↗