Solís S Muñoz, Hernández-Montes M del Socorro, Santoyo F Mendoza
Departamento de Metrología Óptica, Centro de Investigaciones en Óptica, A.C., Loma del Bosque 115, León, Guanajuato C.P. 37150, México.
Appl Opt. 2011 Jul 10;50(20):3383-8. doi: 10.1364/AO.50.003383.
Digital holographic interferometry using three different illumination directions is applied to quantify in full field of view the deformation of an elastic membrane under a given vibration frequency. The technique allows the separation of the object microdisplacements components in the x, y, and z directions, and the resulting data is used to find the membrane Young's modulus. The latter was compared with the result obtained using the theory of thin plates for a clamped circular membrane under a uniformly distributed load, reaching a 95% agreement. Validation of the results between these methods shows the reliability of DHI to measure the mechanical properties of an elastic material.
采用三种不同照明方向的数字全息干涉测量法被应用于在给定振动频率下全场定量弹性膜的变形。该技术能够分离出物体在x、y和z方向上的微位移分量，所得数据用于计算膜的杨氏模量。将后者与使用薄板理论对受均匀分布载荷的夹紧圆形膜所得的结果进行比较，吻合度达到95%。这些方法之间结果的验证表明了数字全息干涉测量法在测量弹性材料力学性能方面的可靠性。
