title: Sub-gigahertz laser resonant ultrasound spectroscopy for the evaluation of elastic properties of micrometric fibers.
abstract: 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.
authors.affiliation: 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. Electronic address: denis.mounier@univ-lemans.fr.
authors.forename: Denis
authors.initials: D
authors.lastname: Mounier
authors.forename: Christophe
authors.initials: C
authors.lastname: Poilâne
authors.forename: Haithem
authors.initials: H
authors.lastname: Khelfa
authors.forename: Pascal
authors.initials: P
authors.lastname: Picart
mesh_terms: D000465:Algorithms; D000535:Aluminum / Q000032:analysis* / Q000737:chemistry*; D055119:Elastic Modulus; D054459:Elasticity Imaging Techniques / Q000379:methods*; D006244:Hardness; D007834:Lasers; D008422:Materials Testing / Q000379:methods*; D013057:Spectrum Analysis / Q000379:methods*; D013314:Stress, Mechanical
chemical_list: D000535:Aluminum
keywords: Fiber; Finite element modeling; Laser interferometry; Laser ultrasonics; Resonant ultrasound spectroscopy (RUS)