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NASA Technical Reports Server (NTRS) 20080004145: Internally damped... |
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by NASA Technical Reports Server (NTRS) |
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A vertical dropped-weight impact test machine has a |
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dropped-weight barrel vertically supported on upper and |
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lower support brackets. The dropped-weight barrel is |
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chambered to receive a dropped-weight assembly having a |
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latch pin at its upper end, a damping unit in the middle, |
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and a tup at its lower end. The tup is adapted for |
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gathering data during impact testing. The latch pin |
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releasably engages a latch pin coupling assembly. The |
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latch pin coupling assembly is attached to a winch via a |
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halyard for raising and lowering the dropped-weight |
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assembly. The lower end of the dropped-weight barrel is |
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provided with a bounce-back arresting mechanism which is |
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activated by the descending passage of the dropped-weight |
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assembly. After striking the specimen, the dropped-weight |
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assembly rebounds vertically and is caught by the bounce- |
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back arresting mechanism. The damping unit of the dropped- |
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weight assembly serves to dissipate energy from the |
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rebounding dropped-weight assembly and prevents the |
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dropped-weight assembly from rebounding from the self- |
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arresting mechanism. |
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Date Published: 2016-10-13 17:15:36 |
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Identifier: NASA_NTRS_Archive_20080004145 |
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Item Size: 12627338 |
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Language: english |
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Media Type: texts |
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