Estimating damage in a rod from changes in node positions

被引：23

作者：

Gladwell, GML

Morassi, A

机构：

[1] Univ Studi Udine, Dipartimento Ingn Civile, I-33100 Udine, Italy

[2] Univ Waterloo, Dept Civil Engn, Waterloo, ON N2L 3G1, Canada

来源：

INVERSE PROBLEMS IN ENGINEERING | 1999年 / 7卷 / 03期

关键词：

detection of notches; axially vibrating beams; inverse nodal problems;

D O I：

10.1080/174159799088027695

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper is an analytical/experimental investigation of the effect of damage on the nodes of free vibration modes of a thin rod in longitudinal vibration. The damage, a notch, is simulated by a simple spring. It is shown that nodes move toward the notch. The direction and amount by which they move may be used to estimate the position and severity of the damage. Analytical results agree well with experimental tests.

引用

页码：215 / 233

页数：19

共 21 条

[1]

CAYLEY P, 1979, J STRAIN ANAL, V14, P49

[2]

Chen JC, 1988, STRUCTURAL SAFETY EV, P474

[3] MODAL-ANALYSIS OF NOTCHED BARS - TESTS AND COMMENTS ON THE SENSITIVITY OF AN IDENTIFICATION TECHNIQUE [J].