MIL-DTL-50523A
4.5 Testing.
4.5.1 Physical properties. (see 6.6) This test measures the force required for a cone point
to penetrate the M112 demolition charge for a specified distance. The samples shall be selected
after the charges have been packaged in charge containers. Any charge that breaks or physically
separates during the sample preparation will not be replaced. The breakage or separation shall be
a nonconforming unit and result in lot rejection. External temperature of the charges at time of
test shall be 73 +/- 3 degrees F (22.8 +/- 1.7 degrees C). Samples shall be temperature
conditioned for a minimum of 24 hours prior to removing from the charge container. Each
sample demolition charge shall be removed from its charge container and two penetrameter
readings shall be taken on each M112 charge at approximately one inch from each end of the
sample charge. The maximum of the two penetrameter readings shall be recorded unless one
reading is less than 2.0 pounds or more than 8.0 pounds. If one reading is below 2.0 or greater
than 8.0, that reading will be recorded and the demolition charge shall be considered a
nonconforming unit. The lot shall be considered acceptable if the inspection sample contains no
nonconforming units and the applicable "k" criteria are met. Both the cone point and the M112
charges shall be on solid supports. The design and dimensions of the cone point shall be as
specified in Figure 1. As the cone point comes into contact with the M112 charge, the
penetrameter load gage housing will continue traveling toward the charge at a constant speed of
6 +/- 1/8 inches per minute. After the housing has traveled 0.25 +/- 0.06 inches, the penetrameter
load gage housing shall stop. This is a non-destructive test. Tested samples may be rewrapped
and returned to the lot.
Figure 1. Penetrameter cone point specifications (dimensions in inches).
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