会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明专利
    • DETECTION OF CORROSION OF CONTAINER WALL
    • JPH01202654A
    • 1989-08-15
    • JP30429588
    • 1988-12-02
    • ATLANTIC RICHFIELD CO
    • BURAIAN AARU SUPAIZU
    • G01B7/06G01B7/00G01N17/00G01N27/90
    • PURPOSE: To inspect the corrosion of a conductor indirectly by inducing current into the conductor and then analyzing the attenuation of the current. CONSTITUTION: The energy supply is interrupted rapidly by a transmitter 29 by attenuating pulses to an intensity 0 level rapidly in a transmission coil, thus inducing an eddy current in a covering 19 and in the inside of a pipe wall 15 and diffusing the eddy current toward the inside of each conductor in a direction away from an antenna 27 and attenuating it. Also, a reception coil detects the presence and attenuation of the induced eddy current in the conductor. Then, a receiver 31 samples a signal detected by the reception coil and sends it to a digital computer 33. At this time, the attenuation of induction current at the part of the container wall 15 is recorded over a certain amount of time and the record is interpreted to determine the thickness of the part of the container wall 15, thus inferring whether the part of the container wall 15 is corroded or not from the determined thickness.