Ultrasonic detection of molten/solid interfaces of weld pools

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6881252

Lott, L A

Results of the study indicate that it is possible to detect molten weld-pool interfaces and obtain information about their size and location using ultrasonic techniques. The study has also identified problems which must be solved before the technique can be used for weld process control: (1) making a positive identification of reflected ultrasonic signals, i.e., distinguishing between signals reflected from the molten/solid interface or from solid/air surfaces in the vicinity of the weld pool, and from grain boundaries in the heat-affected-zone; and (2) determining the effect of temperature gradients near the molten zone on the propagation of ultrasonic waves which affects the ability to accurately measure weld-pool interface location.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6881252
• Report Number(s): EGG-M-15682; CONF-8210104-2; ON: DE83003243
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALLOYS
ARC WELDING
CARBON STEELS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CONTROL
CORROSION RESISTANT ALLOYS
ELEMENTS
FABRICATION
FLUIDS
GAS TUNGSTEN-ARC WELDING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INTERFACES
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LIQUID METALS
LIQUIDS
MATERIALS
METALS
NICKEL ALLOYS
PROCESS CONTROL
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
ULTRASONOGRAPHY
WELDING