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AssigneeThe United States of America as represented by the United States National Aeronautics and Space Administration
InventorsWayman N. Clotfelter, Benjamin F. Bankston
Estimating the term…
A device is provided for measuring the ferrite content of austenitic stainless steel weld material. The device includes a base plate for rotatably mounting a mechanical vernier member thereupon; the mechanical vernier member supports a cantilever beam in a manner to provide vertical positioning of the beam. Suspended from the free end of the beam is a permanent magnet below which is positioned the specimen of austenitic weld material which is to be tested. Strain gauges are provided on the top surface of the beam for measuring the magnetic force between the magnet and weld material by measuring the amount of downward deflection of the beam. The measurement is then converted into a reading which indicates the percentage of ferrite of the weld material in the joint.
A device for measuring the ferrite content in an austenitic stainless steel weld material comprising:
In a device for measuring the ferrite content in an austenitic stainless steel weld specimen including a permanent magnet adapted to be disposed in an adhered relationship with a selected specimen for establishing a magnet couple between the specimen and the permanent magnet, the improvement comprising:
Dependencies are inferred from the claim text.