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Module 1: Overview of Structural Health Monitoring (SHM)

Lecture 12: Understanding Magnetostrictive materials

	Main advantage of magnetostrictive sensing The fundamental technology is non-contact in nature so that the sensors can last indeﬁnitely and can be inserted/embedded inside the composite layers. Disadvantage of MS materials Need for delivery of a controlled magnetic ﬁeld to an embedded actuator. A typical magnetostrictive transducer is shown in Figure 12.3. Figure 12.3: A typical magnetostrictive transducer