A Comparison of Temperature Compensation Methods for Guided Wave Structural Health Monitoring
نویسندگان
چکیده
The sensitivity to damage achievable by guided wave structural health monitoring systems is limited by the repeatability of recorded signals under normal operating conditions. Direct subtraction of reference signals leads to unacceptably high post-subtraction noise in the presence of modest temperature changes due to variations in reflections from benign structural features, hence temperature compensation is necessary. In this paper, various numerical compensation strategies are investigated. It is concluded that a combination of stretching and translating time-traces provides reasonable compensation performance for modest temperature changes.
منابع مشابه
On the Optimization of Temperature Compensation for Guided Wave Structural Health Monitoring
Recorded signals from a guided wave structural health monitoring system are sensitive to damage but also to even small temperature changes. Previous work has shown that reasonable temperature compensation can be achieved by first selecting an optimal baseline and then stretching it to match the current signal of interest. However, this method is not perfect and its efficacy depends upon many fa...
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