Crack identification using sensing sheets

Yao Yao, Branko Glisic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Reliable early-stage damage detection requires continuous monitoring over large areas of structure, with high spatial resolution of sensors. Technologies based on Large Area Electronics (LAE) can enable direct sensing and can be scaled to the level required for Structural Health Monitoring (SHM), in which thin-film strain sensors and control circuits are integrated on the flexible electronics and deposited on a polyimide sheet that can cover large areas of structures. This paper presents the development stage of a prototype strain sensing sheet based on LAE for crack detection and localization. Two types of sensing-sheet interconnects with size 6x6 inch were designed and manufactured, and dense arrays of strain sensors were laminated onto the interconnects. The sensing sheets were bonded to steel plates, which had a notch on the boundary so that fatigue cracks could be generated under cyclic loading. The sensors within the sheet that were close to the notch tip successfully detected the initialization of fatigue crack and localized the damage on the plate. The sensors that were away from the crack successfully detected the propagation of fatigue crack based on the time history of measured strain. Thus, the results of the tests validated general principles of the sensing sheets for crack detection.

Original languageEnglish (US)
Title of host publicationStructural Health Monitoring 2015
Subtitle of host publicationSystem Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
EditorsFu-Kuo Chang, Fotis Kopsaftopoulos
PublisherDEStech Publications
ISBN (Electronic)9781605951119
DOIs
StatePublished - Jan 1 2015
Event10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015 - Stanford, United States
Duration: Sep 1 2015Sep 3 2015

Publication series

NameStructural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015
Volume1

Other

Other10th International Workshop on Structural Health Monitoring: System Reliability for Verification and Implementation, IWSHM 2015
CountryUnited States
CityStanford
Period9/1/159/3/15

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Health Information Management

Fingerprint Dive into the research topics of 'Crack identification using sensing sheets'. Together they form a unique fingerprint.

  • Cite this

    Yao, Y., & Glisic, B. (2015). Crack identification using sensing sheets. In F-K. Chang, & F. Kopsaftopoulos (Eds.), Structural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015 (Structural Health Monitoring 2015: System Reliability for Verification and Implementation - Proceedings of the 10th International Workshop on Structural Health Monitoring, IWSHM 2015; Vol. 1). DEStech Publications. https://doi.org/10.12783/shm2015/374