Figure 8. Frequency performance map of half-span sample: (a) increasing temperature and (b) decreasing temperature

From

Performance Mapping of an Aluminum - Nitinol Composite Vibrating Beam

Nicholas G. Garafolo, Rachel J. Collard

Journal of Mechanical Design and Vibration. 2017, 5(1), 27-36 doi:10.12691/jmdv-5-1-4