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 language | English (US) |
|---|---|
| Title of host publication | Proceedings of the 2007 American Control Conference, ACC |
| Pages | 1149-1154 |
| Number of pages | 6 |
| DOIs | |
| State | Published - Dec 1 2007 |
| Event | 2007 American Control Conference, ACC - New York, NY, United States Duration: Jul 9 2007 → Jul 13 2007 |
Other
| Other | 2007 American Control Conference, ACC |
|---|---|
| Country/Territory | United States |
| City | New York, NY |
| Period | 7/9/07 → 7/13/07 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering