PROCESS OF ACCELERATION TESTING OF ELECTRIC AND RADIO PARTS FOR RESISTANCE TO EFFECTS OF IONIZING RADIATION Russian patent published in 1995 - IPC

FIELD: testing equipment. SUBSTANCE: electric and radio parts are exposed to gamma radiation within range of doses not resulting in loss of serviceability of these parts. Coefficient K of radioactive sensitivity is found from relation K=Δq/ΔP, where Δq is change of critical parameter with change of power of gamma radian dose by value ΔP. Then electric and radio parts are exposed to static gamma-neutron radiation with density ϕ of neutron flux and power P_c of gamma radiation dose accompanying it. Value of critical parameter q(ϕ), P_req at specified density ϕ of neutron flux and power P_req of gamma radiation dose are determined from relation , where q(ϕ, P_c) is value of critical parameter at density ϕ of neutron flux and power P_c of gamma radiation dose. Finally electric and radio parts are exposed to static gamma-neutron radiation with density of neutron flux providing for gain of required integral neutron flux during radiation time t_o. Parts are removed from radiation zone, changes of critical parameter q_a(Kt_o) at moments t=K·t_o, are measured, where K=1, 2,... n; n is total number of measurements. After each change values of coefficients A(n), B(n) are found from relations , where T is duration of radiation of electric and radio parts under real conditions. Electric and radio parts are considered resistant if relation is realized for them, where q_доп is permissible change of critical parameter. EFFECT: improved authenticity of testing process. 1 dwg, 1 tbl