文档介绍：University of Alberta
Department of Civil &
Environmental Engineering
Structural Engineering Report No. 272
Structural Health Monitoring of
Syncrude’s Aurora II
Oil Sand Crusher
by
Ved Prakash Sharma
and
. Roger Cheng
October, 2007
ABSTRACT

Structural Health Monitoring (SHM) is an emerging tool aimed to take a structure from
passive to an active state in terms of intelligence and self diagnosis. However, many
issues remain to be addressed before SHM es a readily usable and easily accessible
tool. Techniques for extracting structural signatures, managing data, and detecting
structural changes or damage remain core areas of research. This research on the Aurora
II oil sand crusher of Syncrude Canada Limited in Fort McMurray, Alberta, extends the
application of SHM beyond the conventional boundaries of bridges and buildings to
industrial structures. A range of design parameters need to be tested, more detailed
loading information needs to be obtained, and long term data on real field conditions are
required for future design enhancements in the structure, which this research project
strives to fulfill.

The Aurora II crusher has been instrumented with a state-of-the-art data acquisition
system to regularly monitor and provide a health report on demand. This research
establishes a knowledge-base on crusher behaviour and the loads acting on it under
different operating conditions. Structural behaviour of the crusher including strain
patterns and their inter-relationship with different dump types, critical strain magnitudes,
and impact factors at various locations under severe loading have been established.
Dynamic properties of the structure such as fundamental frequencies of vibration and
their modal damping ratios have been determined. Fatigue analysis on the structural
components revealed a reasonable fatigue life in general; however, factors like higher
critical stresses due to a history of loss of