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Crack Detection in Metallic Surfaces Based on Dumbbell-Shaped Defected Ground Structures in Microstrip Technology

Abstract

In this paper, a novel crack detection sensor using a microstrip loaded with a Dumbbell-Shaped Defected Ground Structure (DS-DGS) is proposed. The sensing element is etched in the ground plane of a microstrip line and it is easy to fabricate. The electromagnetic (EM) field of the microstrip couples to the DS-DGS, thus demonstrating a bandstop behavior. It is shown that in the presence of a crack in a metallic surface underneath the sensor, the resonance frequency of the DS-DGS is shifted. This frequency shift can be used for crack sensing in metallic surfaces. The proposed sensor exhibits a good sensitivity above 260 MHz shift for a crack with a 200 µm width at the relatively low operating frequency of around 2 GHz.

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Copyright (2022 Warsaw University of Technology)

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Category:
Conference activity
Type:
publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Title of issue:
2022 24th International Microwave and Radar Conference (MIKON) strony 1 - 4
Language:
English
Publication year:
2022
Bibliographic description:
Shaterian Z., Mrozowski M.: Crack Detection in Metallic Surfaces Based on Dumbbell-Shaped Defected Ground Structures in Microstrip Technology// 2022 24th International Microwave and Radar Conference (MIKON)/ : , 2022, s.1-4
DOI:
Digital Object Identifier (open in new tab) 10.23919/mikon54314.2022.9924958
Sources of funding:
  • Statutory activity/subsidy
Verified by:
Gdańsk University of Technology

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