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Load Pulse Determination in Gas Gun Impact Tests

Ritt, Stefan Andreas and Johnson, Alastair F. (2007) Load Pulse Determination in Gas Gun Impact Tests. Trans Tech Publications Ltd.. 5th BSSM International Conference on Advances in Experimental Mechanics, 2007-09-04 - 2007-09-06, Manchester, UK.

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Abstract

This paper is concerned with methods to determine the resultant impact load pulse on test structures during gas gun tests. The muzzle of a gas gun carries an instrumented target support designed to measure force-time-pulses of the impact event on structures mounted on the device. The target during impact is supported on two long slender metallic bars with axial strain gauges. By measuring the impact strain pulses in the support bars and assuming longitudinal wave propagation, it is possible to determine the impact load pulse on the target. The paper describes the strain measuring device and methods for determining the impact loads during impact. Gas gun test results with different projectiles are presented and the load pulses compared with a direct load measurement from a target load cell. The paper discusses possibilities and limitations of the device for quantitative force pulse measurements.

Document Type:Conference or Workshop Item (Speech)
Title:Load Pulse Determination in Gas Gun Impact Tests
Authors:
AuthorsInstitution or Email of Authors
Ritt, Stefan AndreasUNSPECIFIED
Johnson, Alastair F.UNSPECIFIED
Date:18 May 2007
Refereed publication:Yes
In ISI Web of Science:No
Publisher:Trans Tech Publications Ltd.
Status:Accepted
Keywords:impact testing, high strain rate, load pulse measurement
Event Title:5th BSSM International Conference on Advances in Experimental Mechanics
Event Location:Manchester, UK
Event Type:international Conference
Event Dates:2007-09-04 - 2007-09-06
Organizer:British Society for Strain Measurement
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Stefan Andreas Ritt
Deposited On:31 Jul 2007
Last Modified:15 Jan 2010 01:19

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