MIL-STD-1629-RevA - Barringer and Associates, Inc.

MTL-STD- 1629A4\l Damage modes. All possible damage modes which couldresult from exposure to the specified threat mechanism(s) shall bedetermined through analysis of each subsystem, component, or Parts Theanalysis shall include both primary and secondary damage effects.Damage modes of individual item functions shall be postulated on thebasis of the stated mission requirements, specified threats, and systemdescriptions. The effects of the possible damage mode shall includeperformance degradation as well as total item failure. To assist inassuring that a complete damage mode analysis is performed, each damagemode and function ghall, as a minimum, be examined in relation to thefollowlng typical damage conditions.a. Penetrationb. Severedc. Shattered, crackedd. Jammede. Deformedg“ Burned out (i.e., electrical overload)h. Burn through (i.e., threat caused fires)4.2 Damage effects. The consequences of each assumed damagemode on item operation, function or status shall be identified, evaluated,and recorded. Damage effects shall focus on the specific block diagramelement which is effected by the damage condition under consideration.The damage mode under consideration may impact several indenture levelsin addition to the indenture level under analysis; therefore, “local,”“next higher level,” and “end” effects shall be evaluated.4.2.1 Local effects, Local effects concentrate specifically onthe impact an assumed damage mode has on the operation and function ofthe item in the indenture level under consideration. The consequencesoi each postulated damage mode affec~ii~g Liie item shall De describedalong wi:h any second-order effecls whici~ resul~s. P~Jtentidl cullditionswl}ere the damage of one item results in a c~~ntiitionalfailure probabilityor effect of a second item which differs fr-~)m the failure probability oreffect when the second item is considered independently shall be iden~ified.The purpose of defining local effects is TO provide a basis for ev.al~latinp,corlpensating pr:)~-isions and for recommerlci;lj;:;urviv:ibi 1 ity enhancement ,It is possii)ie ior the “local” effect. L(J ‘h!: t?)t- 4am:3fic- mnc{e itself..