Report on Mechanical Testing to Evaluate the Safety of 120-mm Mortar Designs.

摘要

Safe maximum operating pressure curves were developed for three candidate 120-mm mortar designs. The safe maximum operating pressure curve is the elastic strength pressure of the mortar when the material is at the maximum operating temperature. To produce these curves, the strength properties of the three materials at elevated temperatures were measured. These properties were then used to determine the elastic strength pressures of the individual mortar designs. This analysis is necessary to determine margins of safety. Additionally, the fracture properties of the various materials were determined at various temperatures, and an assessment of the likelihood of brittle fracture of the various designs were made. Keywords: Pressure vessels; 120 mm Mortar; Mortars; Mechanical testing; Fracture testing. (kt)