LUNAM Université du Maine, Institut des Molécules et des Matériaux du Mans (IMMM), CNRS UMR 6283, Avenue Olivier Messiaen, 72085 Le Mans cedex 9, France; Ecole Nationale Supérieure d'Ingénieurs du Mans, rue Aristote, 72085 Le Mans cedex 9, France.
Ultrasonics. 2014 Jan;54(1):259-67. doi: 10.1016/j.ultras.2013.06.014. Epub 2013 Jul 10.
The cross-section eigenmodes of micrometric cylinders were measured in the range of several tens of MHz to about 0.5 GHz. The vibrations were excited using subnanosecond laser pulses. The cross-section eigenmodes were simulated using finite element modeling in a 2D geometry. Using the method of resonant ultrasound spectroscopy, the vibration spectrum of an aluminum wire of diameter 33 μm served to determine Young's modulus and Poisson's ratio with a precision of 0.7% and 0.3%, respectively. The calculated and measured frequencies of cross-section eigenmodes were fitted with a precision better than 0.5% in the 50-500 MHz range.
微尺度圆柱体的横截面本征模式在几十兆赫兹到大约 0.5 吉赫兹的范围内进行了测量。振动是使用纳秒级激光脉冲激发的。横截面本征模式使用二维有限元建模进行了模拟。使用共振超声光谱法，直径为 33 微米的铝丝的振动光谱用于确定杨氏模量和泊松比，精度分别为 0.7%和 0.3%。在 50-500 MHz 的范围内，计算和测量的横截面本征模式的频率拟合精度优于 0.5%。
