title: Optimal cuts to extract the third-order elastic constants of langasite single crystals.
abstract: Optimal cuts to determine the third-order elastic constants of langasite single crystals by the resonator method are proposed. By designing a small number of langasite resonators with optimal cut angles and measuring their force-frequency effects, the third-order elastic constants of langasite single crystals may be extracted separately. The numerical method to search for these optimal cut angles is presented. All 14 third-order elastic constants may be determined through a series of experimental measurements. This method will simplify traditional methods used to determine the third-order elastic constants and could potentially produce more accurate results.
authors.affiliation: Department of Engineering Technology, University of North Texas, Denton, TX, USA. Haifeng.Zhang@unt.edu
authors.forename: Haifeng
authors.initials: H
authors.lastname: Zhang