Estimation of fatigue life using ultrasonic sensing

A symbolic dynamics approach

Shalabh Gupta, Asok Ray

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

Abstract

The paper addresses the issues of diagnosis and prognosis of fatigue failure in mechanical systems using symbolic time series analysis (STSA) of ultrasonic sensor data. Specifically, the paper presents a statistical analysis procedure for online estimation of remaining fatigue life in polycrystalline alloys using STSA-based information from an ensemble of fatigue experiments. This real-time information is useful for monitoring the evolving fatigue damage and life extending control of mechanical structures for prevention of widespread failures. The concept is experimentally validated on 7075-T6 aluminum alloy specimens on a special-purpose fatigue test apparatus that is equipped with ultrasonic flaw detectors and an optical travelling microscope.

Original languageEnglish (US)
Title of host publicationProceedings of the 2007 American Control Conference, ACC
Pages1149-1154
Number of pages6
DOIs
StatePublished - Dec 1 2007
Event2007 American Control Conference, ACC - New York, NY, United States
Duration: Jul 9 2007Jul 13 2007

Other

Other2007 American Control Conference, ACC
CountryUnited States
CityNew York, NY
Period7/9/077/13/07

Fingerprint

Ultrasonics
Fatigue of materials
Time series analysis
Ultrasonic sensors
Fatigue damage
Aluminum alloys
Statistical methods
Microscopes
Detectors
Defects
Monitoring
Experiments

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Gupta, S., & Ray, A. (2007). Estimation of fatigue life using ultrasonic sensing: A symbolic dynamics approach. In Proceedings of the 2007 American Control Conference, ACC (pp. 1149-1154). [4282229] https://doi.org/10.1109/ACC.2007.4282229
Gupta, Shalabh ; Ray, Asok. / Estimation of fatigue life using ultrasonic sensing : A symbolic dynamics approach. Proceedings of the 2007 American Control Conference, ACC. 2007. pp. 1149-1154
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Gupta, S & Ray, A 2007, Estimation of fatigue life using ultrasonic sensing: A symbolic dynamics approach. in Proceedings of the 2007 American Control Conference, ACC., 4282229, pp. 1149-1154, 2007 American Control Conference, ACC, New York, NY, United States, 7/9/07. https://doi.org/10.1109/ACC.2007.4282229

Estimation of fatigue life using ultrasonic sensing : A symbolic dynamics approach. / Gupta, Shalabh; Ray, Asok.

Proceedings of the 2007 American Control Conference, ACC. 2007. p. 1149-1154 4282229.

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

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Gupta S, Ray A. Estimation of fatigue life using ultrasonic sensing: A symbolic dynamics approach. In Proceedings of the 2007 American Control Conference, ACC. 2007. p. 1149-1154. 4282229 https://doi.org/10.1109/ACC.2007.4282229