Accession Number : AD0470648


Title :   RECALIBRATION OF STANDARD CARD-GAP TEST


Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD


Personal Author(s) : Liddiard, Thomas P , Jr ; Price, Donna


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/470648.pdf


Report Date : 20 Aug 1965


Pagination or Media Count : 56


Abstract : A new calibration of peak pressure (P) vs gap length (X) is presented for the NOL standardized and modified gap tests. It is shown that experimental values of both shock velocity (U) and particle velocity (u) are required to obtain a valid P-X curve at low pressures, because the normally linear U-u curve for the gap material exhibits a discontinuity at about X = 50 mm. The initial free-surface velocity is determined by monitoring films placed at the end of the gap.


Descriptors :   *EXPLOSIVES , VELOCITY , TEST METHODS , ACRYLIC RESINS , SENSITIVITY , IMPACT SHOCK , CALIBRATION , TETRYL , PENTOLITE


Subject Categories : Explosions


Distribution Statement : APPROVED FOR PUBLIC RELEASE