For homonymous articles, see Munroe (disambiguation). This article is a draft about physics.
You can share your knowledge by improving it (how?) according to the recommendations of the corresponding projects.
The Munroe effect refers to the partial focus of energy from an explosion of an explosive to a deforming piece of metal. If the metal piece has a conical or concave shape, a high velocity solid metal jet is formed. This phenomenon is at the origin of hollow charge ammunition.
Named after American chemist Charles E. Munroe, who discovered it in 1888, the Munroe effect was first observed in Newport, Rhode Island, United States. Munroe noticed that when a block of nitrocellulose, whose name was printed on it, was fired near a metal plate, the letters were cut out of the metal (if the letters were extruded above the plate). surface of the block, the letters engraved on the plate were too). In 1910, Egon Neumann discovered in Germany that a block of TNT that would have normally edentated a steel plate pierced it if the explosive was conical.
This method is now used in arming, a conical or concave shaped load that can penetrate deep steel shielding on the equivalent of 150 to 250% of the diameter of the load (unless armor either in composite, or specially created to counter the effects of a "Munroe" charge). The civilian also exploits the Munroe effect in demolition explosives, in the form of small charges. code
wiki
