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Augmented Shock Wave Severance of MaterialsThis paper describes a new approach for severing or weakening a variety of materials. The technique employs embedding explosive cords into parallel grooves that are cut into a surface of a material. The cords are initiated simultaneously to produce shock waves that progress toward the centerline between the cords and the lower surface of the material. Intersecting incident and reflected waves augment at the centerline to fail or weaken the material in tension. No harmful debris is produced on the opposite side of the material from the explosive cords. The primary focus of the effort described in this paper was to fracture the F-16 aircraft trilaminate canopy. Also, complete severance was achieved in 2024-T4 aluminum plate stock. Possible applications are through canopy egress and crew module severance from military aircraft and separation of rocket vehicle stages and payloads. This approach offers important advantages over explosive methods currently in use.
Document ID
20040111312
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Bement, Laurence J.
(NASA Langley Research Center Hampton, VA, United States)
Schimmel, Morry L.
(Schimmel Co. Saint Louis, MO, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 1995
Subject Category
Composite Materials
Report/Patent Number
AIAA Paper 95-2407
Meeting Information
Meeting: 31st AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Location: San Diego, CA
Country: United States
Start Date: July 10, 1995
End Date: July 12, 1995
Sponsors: American Inst. of Aeronautics and Astronautics, American Society of Mechanical Engineers, Society of Automotive Engineers, Inc., American Society for Electrical Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.
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