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US 4,682,490 AGranted
Impact test instrument
OwnerRoger A. Adelman, David A. Corelliinventors
Life of this patent
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Abstract
A power-actuated instrument for the impact excitation of mechanical structures includes means for producing a single impact force of variable magnitude and self-contained integrated electronic means for detecting, conditioning, and limit testing of the electronic representation of the impact force so delivered.
Claims14
An impact test instrument for structural testing, comprising:
- (a) a housing;
- (b) movable means at least partially disposed in said housing for imparting a controlled and repeatable impact to an external structure whose position is stationary relative to said housing, said movable means including a force transducer for detecting the amplitude-time signature characteristics of the impact between the movable means and the external structure;
- and
- (c) pulse means responsive to an a.c. electrical source for triggering the movement of said movable means and initiating impact between said movable means and the external structure, said pulse means being adjustable to vary the total electrical energy of the application of a half wave of the a.c. power source to the movable means, said pulse means providing an isolated pulse having a maximum predetermined repetition rate whereby isolated impact can be imparted to a repeatedly precise location on said external structure.
1 more element
Dependencies are inferred from the claim text.