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Daniel D. Frey. Jeunnette, Mark N. (Mark Nathaniel), 1979- Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering 2013-06-17T19:52:29Z 2013-06-17T19:52:29Z 2013 2013 http://hdl.handle.net/1721.1/79276 846682705 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013. Cataloged from PDF version of thesis. Includes bibliographical references (p. 123). This paper details the design and fabrication of a disrupting test rig for measuring the energy required to separate the fuze from the casing of unexploded ordnance (UXO), also called disrupting the device. Preliminary tests were conducted using an explosive disrupting tool and the energy for disruption relative to input kinetic energy was estimated and used to design a test rig with suitable energy to ensure disruption. The disrupting test rig operates on the same principle as a Charpy Notch testing machine, and can deliver up to 3kJ of kinetic energy with its 3m long and up to 137kg mass pendulum arm. A sliding fixture mechanism provides kinematic constraints to allow the fuze body to be pulled out of the casing by the projectile. Measurements taken with the disrupting rig show that disruption can be achieved with as little as 1.5kJ of kinetic energy, assuming the casing is rigidly fixed to ground during disruption. This work will inform further development of a non-explosive tool to replace existing explosive disrupting tools. by Mark Nathaniel Jeunnette. S.M. 123 p. eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Mechanical Engineering. Measurement of projectile energy and velocity requirements for the disruption of unexploded ordnance Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="b3a070f8-426b-49d9-94d3-9c62a877964a"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Measurement of projectile energy and velocity requirements for the disruption of unexploded ordnance</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2013</PublicationDate> <Authors> <Author> <DisplayName>Jeunnette, Mark N. (Mark Nathaniel), 1979-</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Mechanical Engineering.</Keyword> <Abstract>This paper details the design and fabrication of a disrupting test rig for measuring the energy required to separate the fuze from the casing of unexploded ordnance (UXO), also called disrupting the device. Preliminary tests were conducted using an explosive disrupting tool and the energy for disruption relative to input kinetic energy was estimated and used to design a test rig with suitable energy to ensure disruption. The disrupting test rig operates on the same principle as a Charpy Notch testing machine, and can deliver up to 3kJ of kinetic energy with its 3m long and up to 137kg mass pendulum arm. A sliding fixture mechanism provides kinematic constraints to allow the fuze body to be pulled out of the casing by the projectile. Measurements taken with the disrupting rig show that disruption can be achieved with as little as 1.5kJ of kinetic energy, assuming the casing is rigidly fixed to ground during disruption. This work will inform further development of a non-explosive tool to replace existing explosive disrupting tools.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>