Internally damped, self-arresting vertical drop-weight impact te

Measuring and testing – Testing by impact or shock – Specimen impactor detail

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Details

73 1209, G01N 330

Patent

active

055400787

ABSTRACT:
A vertical dropped-weight impact test machine has a dropped-weight barrel vertically supported on upper and lower support brackets. The dropped-weight barrel is chambered to receive a dropped-weight assembly having a latch pin at its upper end, a damping unit in the middle, and a tup at its lower end. The tup is adapted for gathering data during impact testing. The latch pin releasably engages a latch pin coupling assembly. The latch pin coupling assembly is attached to a winch via a halyard for raising and lowering the dropped-weight assembly. The lower end of the dropped-weight barrel is provided with a bounce-back arresting mechanism which is activated by the descending passage of the dropped-weight assembly. After striking the specimen, the dropped-weight assembly rebounds vertically and is caught by the bounce-back arresting mechanism. The damping unit of the dropped-weight assembly serves to dissipate energy from the rebounding dropped-weight assembly and prevents the dropped-weight assembly from rebounding from the self-arresting mechanism.

REFERENCES:
patent: 3360979 (1968-02-01), Jensen et al.
patent: 3402593 (1968-09-01), Bresk et al.
patent: 3485083 (1969-12-01), Gray et al.

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