Research on strain testing technology of electromagnetic railgun’s abnormal barrel

Abstract Aiming at difficult strain test and unable to accurate for electromagnetic railgun’s special-shaped barrel bore, the testing technology of was studied. According railgun characteristics analysis, back rail insulation support plate are selected as points, FBG(Fiber Bragg Grating) stain sensor is embedded along circumference obtain true value. At same time, in order comparison, The papers studies rail’s simulation railgun, result accordance with result, show that measurement method feasible, results reliable. research can provide data location position projectile bore by feature.