PROCESS OF MANUFACTURE OF TRANSDUCERS CONTROLLING CYCLIC DEFORMATION Russian patent published in 2002 - IPC

FIELD: measurement technology. SUBSTANCE: process can be used to measure deformation and stress on surface of parts of machines subject to cyclic loading. Process consists in exposure of foil of plastic homogeneous material, electrolytic copper, for instance, under constant stress amplitude σ_t to number of cycles Nt found by formulas D = (1+C)σ_A+(1-C)K/N_A, C = σ_A/σ_Bg, where σ_A, N_A are stress amplitude and number of loading cycles under which response of transducers is required; K, σ_RO, I_g, σ_Bg are parameters of calibration dependence of initial foil: K is proportionality factor; σ_RO is fatigue limit of material of part; I_g is value of injury of material of part under which reaction of foil emerges; σ_Bg is analog of ultimate strength of material of foil. Then foil is cut into separate elements used as transducers. EFFECT: enhanced sensitivity of transducers. 2 dwg