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A Comparative Study of Two BAM Designs for Friction Sensitivity Testing of Explosives
Author(s) -
Phillips Jason J.,
Ching Mitchell L.
Publication year - 2020
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201900361
Subject(s) - sensitivity (control systems) , servo , servomotor , explosive material , displacement (psychology) , significant difference , control theory (sociology) , materials science , computer science , mechanical engineering , automotive engineering , mathematics , engineering , chemistry , statistics , artificial intelligence , electronic engineering , organic chemistry , psychotherapist , psychology , control (management)
Abstract A new commercial design of BAM friction tester that utilizes a programmable servo motor was tested in comparison to the traditional cam‐driven model. Displacement and velocity profiles were analyzed for both designs; significant differences were found between the two designs, most notable of which is that the traditional cam‐driven unit has plate velocities that can be 50–75 % greater than those seen on the servo‐driven model. Five energetic materials were also tested on each machine, including PETN, RDX, HMX, CL‐20, and HNAB. Results from the servo‐driven model generally showed slightly less sensitivity when compared to the cam driven model, though the magnitude of the difference is not significant enough to require modification of safe handling procedures for the materials tested.