8Salawu O S. Detection of structural damage through changes in frequency: a review [J]. Engineering Structures, 1997, 19(9) : 718 - 723.
9Thomas G C, Dohmann C R. A modal test design strategy for model correlation [ C ]//In: Bathel, ed. Proc 13th Intl Modal Analysis Conference, New York: Union College, Schenectady, 1995:927 - 933.