Yg. Smorodinskii et Ab. Rinkevich, PHYSICAL PRINCIPLES FOR NONDESTRUCTIVE TESTING OF PURE METAL COMPONENTS, Russian journal of nondestructive testing, 30(1), 1994, pp. 66-70
Effects are considered that are dependent on conduction-electron relax
ation time, which are applied to nondestructive testing of pure-metal
components. Conditions are given under which one can use some effects
for measuring or estimating the relaxation time: Doppler-shifted acous
tic cyclotron resonance, quantized oscillations in ultrasound absorpti
on, and helicon resonance. These phenomena are compared, as are method
; of measuring the resistivity and eddy currents in order to estimate
the purity and structural perfection. The methods are classified as be
ing applicable to single-crystal and polycrystalline specimens.