Shock: Damage Boundary C The damage boundary generated with use of a trapezoidal pulse encloses the damage boundaries of all the other waveforms Fragility testing is the process used to establish damage boundaries of products a. It is usually conducted on a shock testing machine. The procedure has been standardized (asTM d3332, Mechanical-Shock Fragility of Products, Using Shock Machines) b Procedure the item to be tested is fastened to the top of a shock machine table and the table is subjected to controlled velocity changes and shock pulses. The shock table is raised to a preset drop height. It is then released, free falls and impacts against the base of the machine it rebounds from the base and is arrested by a braking system so that only one impact occursShock: Damage Boundary c. The damage boundary generated with use of a trapezoidal pulse encloses the damage boundaries of all the other waveforms. - Fragility testing is the process used to establish damage boundaries of products. a. It is usually conducted on a shock testing machine. The procedure has been standardized (ASTM D3332, Mechanical-Shock Fragility of Products, Using Shock Machines). b. Procedure: the item to be tested is fastened to the top of a shock machine table and the table is subjected to controlled velocity changes and shock pulses. The shock table is raised to a preset drop height. It is then released, free falls and impacts against the base of the machine; it rebounds from the base and is arrested by a braking system so that only one impact occurs