Data fusion for compensation of temperature variations in Lamb-wave based SHM systems

Ziemowit Dworakowski; Lukasz Ambrozinski; Tadeusz Stepinski

doi:10.1117/12.2085124

23 March 2015 Data fusion for compensation of temperature variations in Lamb-wave based SHM systems

Ziemowit Dworakowski, Lukasz Ambrozinski, Tadeusz Stepinski

Proceedings Volume 9438, Health Monitoring of Structural and Biological Systems 2015; 94381S (2015) https://doi.org/10.1117/12.2085124
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Temperature variations affect Lamb wave propagation and therefore in this way they can severely limit application of baseline signals in SHM systems. Various techniques are proposed in the paper to solve this problem. New method based on an interpretation of multiple signals acquired in distinct points of the structure is introduced and compared with other widely used approaches. Data fusion is used to merge a number of methods into one with a substantially increased efficiency.

Citation Download Citation

Ziemowit Dworakowski, Lukasz Ambrozinski, and Tadeusz Stepinski "Data fusion for compensation of temperature variations in Lamb-wave based SHM systems", Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 94381S (23 March 2015); https://doi.org/10.1117/12.2085124

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