Browse > Article
http://dx.doi.org/10.3795/KSME-A.2016.40.8.721

Development of Dual Sensor for Prognosticating Fatigue Failure of Mechanical Structures  

Baek, Dong-Cheon (Reliability Assessment Center, Korea Institute of Machinery & Materials)
Park, Jong-Won (Reliability Assessment Center, Korea Institute of Machinery & Materials)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.40, no.8, 2016 , pp. 721-724 More about this Journal
Abstract
Because of the inherent uncertainties caused by the manufacturing process variations, future loading conditions, and incomplete damage models, the lifetimes of mechanical structures under field conditions are significantly different from the results obtained in the laboratories. In this study, a dual sensor was developed to prognosticate the fatigue failure of structures under these uncertain conditions, and its effectiveness was demonstrated on a rectangular columnar structure under repeated uni-axial loading. The dual sensor is a slightly weaker structure embedded in the target structure, so that failure occurs in the sensor earlier than in the target structure. From the signal differences in the strain gauges in the embedded dual sensor, it is possible to differentiate between the normal status and warning status, even under variable loads.
Keywords
Dual Sensor; Fatigue Failure; Mechanical Structure; Prognostics and Health Management;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Sankaraman, S., Teubert, C. and Goebel, K., 2014, "Uncertainty in Steady-State Diagnostics of a Current-Pressure Transducer: How Confident are we in Diagnosing Faults?," Annual Conference of the Prognostics and Health Management Society, pp. 356-366.
2 Lim, J. B., 2011, "Fatigue Life Estimation of a Aircraft Lug Considering Model Uncertainty," The conference of Korean Society for Aeronautical & Space Sciences, pp. 792-796.
3 Seo, J. W., Goo, B. C., Kim, N. P., You, W. H. and Chung., H. C., 2001, "Probabilistic Estimation of the Fatigue Strength of an Electric Car Bogie Frame," The Conference of the Korean Society for Railway, pp. 261-266.
4 Kim, B. S., 2014, "Multi-MW Class Wind Turbine Blade Design Part II: Structural Integrity Evaluation," Trans. Korean Soc. Mech. Eng. B, Vol. 38, No. 4, pp. 311-320.   DOI
5 Seo, B. S., Jang, B. C. and Youn B. D., 2015, "Success Cases and Vision on PHM technology in Engineering System," The Korean Society for Noise and Vibration Engineering, Vol. 25, No.1, pp. 7-15.
6 Baek, D. C., Bae, K. H. and Park, J. W., 2015, "Prediction of Fatigue Failure of Mechanical Structure using Embedded Design," The Conference of Korean Society of Mechanical Engineering: Materials and Fracture, pp. 95-96.