High Speed Photographic Studies Of The Ballistic Impact Of Ceramics

1989 ◽  
Author(s):  
J. E. Field ◽  
D. Townsend ◽  
Q. Sun
Keyword(s):  
High Speed ◽  
Ballistic Impact ◽  
Photographic Studies

Paper F–5: High-Speed Photographic Studies of Electrically Exploded Metal Films and Wires

1962 ◽  
Vol 71 (1A) ◽  
pp. 283-289
Author(s):  
Louis Zernow ◽  
George Woffinden ◽  
Fulton W. Wright
Keyword(s):  
High Speed ◽  
Metal Films ◽  
Photographic Studies

High-speed infrared thermal imaging during ballistic impact of triaxially braided composites

2018 ◽  
Vol 52 (25) ◽  
pp. 3549-3562 ◽  
Author(s):  
Joel P Johnston ◽  
J Michael Pereira ◽  
Charles R Ruggeri ◽  
Gary D Roberts
Keyword(s):  
Thermal Imaging ◽  
High Speed ◽  
Imaging System ◽  
Polymer Matrix Composites ◽  
Ballistic Impact ◽  
Back Surface ◽  
Composite Panels ◽  
Infrared Thermal Imaging ◽  
Failure Patterns ◽  
The Impact

Ballistic impact experiments were performed on triaxially braided polymer matrix composites to study the heat generated in the material due to projectile velocity and penetration damage. Triaxially braided (0/+60/−60) composite panels were manufactured with T700S standard modulus carbon fiber and two epoxy resins. The PR520 (toughened) and 3502 (untoughened) resin systems were used to make different panels to study the effects of resin properties on temperature rise. The ballistic impact tests were conducted using a single stage gas gun, and different projectile velocities were applied to study the effect on the temperature results. Temperature contours were obtained from the back surface of the panel during the test through a high speed, infrared thermal imaging system. The contours show that high temperatures were locally generated and more pronounced along the axial tows for the T700S/PR520 composite panels; whereas, tests performed on T700S/3502 composite panels, using similar impact velocities, demonstrated a widespread area of lower temperature rises. Nondestructive, ultrasonic C-scan analyses were performed to observe the failure patterns in the impacted composite panels and correlate the C-scan results with the temperature contours. Overall, the impact experimentation showed temperatures exceeding 252℃ (485°F) in both composites which is well above the respective glass transition temperatures for the polymer constituents. This expresses the need for further high strain rate testing with measurement of the temperature and deformation fields in order to fully understand the complex behavior and failure of the material and to improve the confidence in designing aerospace components with these materials.

High-speed photographic studies of impact on thin layers of emulsion explosive

1984 ◽  
Vol 9 (3) ◽  
pp. 77-81 ◽  
Author(s):  
V. Krishna Mohan ◽  
J. E. Field ◽  
G. M. Swallowe
Keyword(s):  
High Speed ◽  
Thin Layers ◽  
Emulsion Explosive ◽  
Photographic Studies
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