Advanced Fatigue Measurement and Prediction System Suitable for Critical Defence and Aerospace Structures


  1. Yumshtyk, G.
  2. Yumshtyk, A.
Corporate Authors
Defence R&D Canada - Centre for Security Science, Ottawa ONT (CAN);Paradigm Shift Technologies, Toronto Ont (CAN)
Advanced Fatigue Measurement and Prediction System Suitable for Critical Defence and Aerospace Structures As air platforms continue to evolve and increase in efficiency, new technologies are posed to contribute significantly to the evolution of emerging new generation air and space systems. Sensor technologies are posed to alter command and control, flight control, and maintenance functions and regimes. Additionally, due to its defence strategy and cost reduction implementation directive, the Royal Canadian Air Force is exploring alternatives to enhance the effectiveness of its aircraft life cycle management and maintenance approach. This document reports on the development and demonstration of a new generation of life cycle fatigue sensor technology, known as chameleon Strain Gauge (CSG®) or fatigue accumulation sensor. The developed sensor demonstrated the ability to accurately and consistently measure structural fatigue, together with reliable prediction of remaining fatigue life using AL 6061-T6 and CS 4340 sample coupons. Such sensor capability not only met but surpassed set specifications and expectations. The physical nature, low profile (e.g. stamp size), of the sensor makes it suitable for applications where information on the structural integrity is critical to airworthiness assurance of aircraft components (e.g. landing gears, wing spars, fuselage bulk head.) Improved data acquisition protocols and procedures are required to ensure technology exploitation effectiv

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Fatigue sensor;CSG sensor;fatigue accumulation sensor;optical sensor;reaming useful life;signal processing;life extension;aircraft maintenance;life cycle management
Report Number
DRDC-CSS-CR-2013-035 — Contractor Report (Final Report)
Date of publication
01 Dec 2013
Number of Pages
Electronic Document(PDF)

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