| 摘要 |
FIELD: measuring technique. ^ SUBSTANCE: method detector can be used for measuring mechanical stress, in particular, for inspection of condition of items of tools, including bolts. Device has first inductance and at least one more additional member, which has at least one first compressing load depending impedance or second impedance and second inductance. Second impedance or/and second inductance depend on compressing load. When compressing load, acting onto member, changes the resonant frequency of electromagnet oscillation circuit changes as well; circuit is formed by impedance and inductance. Method is based upon the fact the at least one additional member of detector having first inductance is disposed between fitting aid and construction connected with fitting member. Additional member of detector is made of piezoelectric or magneto-strictive material. Additional member of detector has at least one first impedance, dependent on compressing load, or second impedance and second inductance. Second impedance and/or second inductance depend on compressing load in such a way that at action of compressing load onto additional member, resonant frequency of electromagnet oscillation circuit, formed by impedance and inductance, changes as well. ^ EFFECT: simplified process of application; simplified method of inspection. ^ 18 cl, 6 dwg |
