Simple swept-sine analyzer for excitation and measurement of dynamic response in ocean structures

被引：4

作者：

Antón, O

Hidalgo, R

Rivera, R

Tomasel, FG

机构：

[1] Coll Engn, Dept Phys, RA-7600 Mar Del Plata, Argentina

[2] Colorado State Univ, Engn Res Ctr, Ft Collins, CO 80523 USA

[3] Coll Engn, Dept Elect Engn, RA-7600 Mar Del Plata, Argentina

来源：

OCEAN ENGINEERING | 2002年 / 29卷 / 10期

关键词：

swept-sine analyzer; non-destructive testing; health monitoring; damage identification; dynamic characterization; vibration;

D O I：

10.1016/S0029-8018(01)00082-8

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

We present the design of a simple, low cost swept-sine analyzer. Based on direct digital synthesis, the analyzer can generate high purity tones with a linear resolution of 0.000931 Hz up to 1 MHz. Details of the circuit are discussed, and the performance of the system is demonstrated by a simple application to the dynamical characterization of cracked cantilever beams. It is felt that the device may find application in the design, construction and monitoring of structural systems such as offshore platforms and other marine structures. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1209 / 1217

页数：9

共 7 条

[1]

BEGG RD, 1976, P 8 ANN OFFSH TECHN, P205

[2]

CROHAS H, 1982, OIL GAS J, V80, P94

[3]

Doebling S.W., 1996, ALAMOS NATL LAB REPO

[4]

LAURA PAA, 1998, PUBLICACION IMA