Method and apparatus for determining weldability of thin sheet metal

Patent · Tue Aug 16 04:00:00 EDT 1988

OSTI ID:6664274

Goodwin, G M; Hudson, J D

This patent describes apparatus for evaluating the hot-cracking sensitivity of a sheet of metal during welding thereof by changes in a preselected stress applied on the sheet of metal prior to the welding to determine weldability of the metal, comprising a base, a first jaw support means secured to a planar surface on the base, second jaw support means supported on the planar surface of the base and movable thereon with respect to the first jaw support means, grip means carried by the first and second jaw support means for securing a sheet of metal to be autogenously welded thereacross between the first and second jaw means along a plan coplanar with the planar surface, load inducing means coupled to the second jaw support means for urging the second jaw support means away from the first jaw support means to stress the sheet of metal in a direction transverse to the direction of welding of the sheet of metal, adjusting means associated with the load inducing means for applying a preselected stress on the sheet of metal prior to welding, and load cell means coupled to the load inducing means for providing a signal indicative of changes in the reselected stress during welding of the sheet of metal.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4763521
• OSTI ID: 6664274
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360103* -- Metals & Alloys-- Mechanical Properties
DESIGN
DYNAMIC LOADS
ELEMENTS
FABRICATION
FRACTURE MECHANICS
JOINING
MEASURING INSTRUMENTS
MECHANICS
METALS
METERING
METERS
STRESS ANALYSIS
WELDABILITY
WELDING