SMS manufactures a Modified Bureau of Mines (MBOM) Impact Test Apparatus for clients who require in-house testing to determine the energy required to initiate an explosive by impact.

The primary parts of the test apparatus are an anvil upon which the sample is placed, a moving hammer of known contact area that rests on the top of the sample, and a falling drop weight that strikes the moving hammer.

An explosive sample is tested by placing it between the anvil and moving hammer. Impact energy is applied to the hammer by a constant mass weight dropped from a variable height. The amount of energy imparted to the sample is controlled by the drop height. Initiation is observed as production of smoke, fire, or an audible pop. An infrared gas analyzer can also be used to detect reaction products.

This test simulates impact conditions in processing operations where an explosive material may be subjected to impact by processing equipment or pinched/crushed between moving or colliding parts. Solid, liquid, or powdered materials may be tested using special holders and shields.

Close-up of the MBOM Impact Machine

Overall view of the MBOM Impact Machine

Back view of the MBOM Impact Machine

Main display of Control Panel