An investigation of self-sensing and self-repairing bolted joints is presented. The goal of the self-sensing and self-repairing joint is to reduce the likelihood of failure due to self-loosening and to reduce the cost of maintenance of critical bolted joints. The concept combines piezoelectric-based health-monitoring techniques with shape memory alloy (SMA) actuators to restore tension in a loose bolt.
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Peairs et al. (2004) studied this question.
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