Smart plug for fin fan tubes on-line corrosion monitoring

    公开(公告)号:US12092613B2

    公开(公告)日:2024-09-17

    申请号:US17890631

    申请日:2022-08-18

    发明人: Saad A. Al-Jabr

    摘要: A method for measuring corrosion comprising the steps of positioning a smart plug in a plug of a plug sheet of a side plate of a heat exchanger, wherein the smart plug comprises a wireless transmitter and an ultrasonic sensor, wherein the wireless transmitter portion of the smart plug is external to the heat exchanger, wherein the smart plug extends through the side plate such that the ultrasonic sensor contacts a tube positioned in the tube sheet, emitting sound waves from the ultrasonic sensor such that sound waves travel down the tube contacted by the ultrasonic sensor; measuring wall thickness in the tube to produce wall thickness measurement data, wherein the sound waves return to the ultrasonic sensor in the presence of corrosion; and transmitting the wall thickness measurement data from the wireless transmitter of the smart plug.

    DEFECT DETECTION DEVICE AND DEFECT DETECTION METHOD

    公开(公告)号:US20240282608A1

    公开(公告)日:2024-08-22

    申请号:US18559797

    申请日:2021-05-10

    摘要: A defect detection device (100) which detects a defect of a semiconductor device (10) includes: a standing wave generator (20), applying a standing wave (30) to the semiconductor device (10) to apply a suction force to a wire (13); cameras (41, 42); and a control part (50), adjusting an operation of a standing wave generator (20) and performing defect detection on the semiconductor device (10). The control part (50) captures, by using the cameras (41, 42), a first image of the semiconductor device (1) of a first state in which the suction force is applied to the wire (13) and a second image of the semiconductor device (10) of a second state in which the suction force applied to the wire (13) is smaller than the first stage, and compares the first image and the second image to perform defect detection.