title: Measurement of the longitudinal and transverse vibration frequencies of a rod by speckle interferometry.
abstract: A heterodyne interferometric system was used to detect the normal and tangential components of the displacement at one point of a sample when it is vibrating freely in its natural modes, arising from transient excitation. A cylindrical aluminium rod was the test sample. An analysis of the spectrum associated with the in-plane and out-of-plane displacements made it possible to determine the values of the longitudinal and transverse natural frequencies.
authors.affiliation: Dept. de Fisica Aplicada a los Recursos Naturales, Univ. Politecnica de Madrid.
authors.forename: A
authors.initials: A
authors.lastname: Bayon
authors.forename: F
authors.initials: F
authors.lastname: Gascon
authors.forename: A
authors.initials: A
authors.lastname: Varade