- Title
- Ballistic pendulum experiments and escalator bullet traps
- Creator
- Golley, Bruce W.; Hughes, Bruce B.
- Relation
- Centre for Infrastructure Performance and Reliability Research Report. No. 284.10.2017
- Relation
- http://www.newcastle.edu.au/research-and-innovation/centre/cipar
- Publisher
- University of Newcastle
- Resource Type
- report
- Date
- 2017
- Description
- The Australian Department of Defence has a number of indoor firing ranges for training purposes with these ranges incorporating a variety of bullet traps including steel escalators. Defences’ steel escalator traps consist of two, sloping plates which direct a projectile along the face of the impacted plate, through a rear slot/throat and thence to a projectile de-energising chamber for spent projectile collection. The steel, impact plates under examination were constituted by quenched and tempered steel with a thickness of 10 mm and a hardness of 500 HB with the trap being commissioned in 1990. The most heavily impacted area of the plate is about a metre either side of the throat with this impacted area equating to a typical shoulder/weapon firing height. It was observed in 2011 that the lower, impact plates in particular were buckling in the vicinity of the throat. This research report describes an experiment to determine the cause of the buckling effect and centred on an examination of the ratio of tangential impulse to normal impulse during the impact of a 5.56 mm round fired from M4 carbine commonly used on the range. This examination used a ballistic pendulum with tests conducted on 29-30 October 2012 and 6-7 December 2012. Details of the tests and relevant modelling are contained in this research report. This report summarises the research achievements of Dr Bruce Golley and Bruce Hughes and in particular is dedicated to the memory of Dr Bruce Golley. The Centre for Infrastructure Performance and Reliability (CIPAR) at The University of Newcastle values these achievements and is pleased to sponsor the publication of their research findings.
- Subject
- ballistics; bullet trap; defence; ballistic pendulum; steel; impact
- Identifier
- http://hdl.handle.net/1959.13/1387608
- Identifier
- uon:32638
- Identifier
- ISBN:9780725900052
- Language
- eng
- Full Text
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