This report investigates the use of Impact Modulation (IM) as a means for detecting loose bolts in a satellite structure. First, a two-beam, one-bolt assembly is studied to establish guidelines for implementing IM. Then, theoretical models are developed to provide a basis for applying IM to bolted joints. Two analysis methods for identifying loose bolts within a structure are then proposed. These methods are demonstrated on a three-beam, two-bolt structure; ...
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