公开(公告)号：US20250137915A1

公开(公告)日：2025-05-01

申请号：US18924290

申请日：2024-10-23

Applicant: ABB Schweiz AG

Inventor： Grzegorz Piotr Wawrzola ,  Daniel-Bo Wang ,  Matti Laitinen ,  Vesa Tiihonen

IPC: G01N17/04

Abstract: A method of detecting atmospheric corrosion for electrical devices includes monitoring of an electrical state of plurality of metal structures operating as sensing elements embedded in a corrosion sensor. All metal structures have equal dimensions and are made of the same material with the same chemical structure and are placed on non-conductive substrate and located in electrical device. Each metal structure works as single sensing element and its electrical state is monitored. What is more, monitoring of the electrical state of metal structures comprises an assessment of how many of the metal structures have been damaged due to corrosion. The progress of corrosion is assessed by comparison of number of damaged metal structures to threshold values.