Identification of Delaminations in Composite Laminates

In this article, an identification technique for detecting delaminations in composite laminates is proposed, which uses the distributed piezoelectric actuators/sensors and the conception of transfer function. In this technique, the configuration of arrays of actuators/sensors is carefully designed to enhance the efficiency of the identification algorithm based on the transfer function. A beam example is employed to study the characteristics and effectiveness of the present identification approach, numerically. The experimental data are simulated from a FEM technique of higher-order plate theory for adaptive composite laminates, which is extended for delaminated laminates by implementing the displacement continuity conditions at the delamination front.

[1]  Grant P. Steven,et al.  VIBRATION-BASED MODEL-DEPENDENT DAMAGE (DELAMINATION) IDENTIFICATION AND HEALTH MONITORING FOR COMPOSITE STRUCTURES — A REVIEW , 2000 .

[2]  Ning Hu,et al.  Structural damage identification using piezoelectric sensors , 2002 .

[3]  Ningqun Guo,et al.  Lamb wave reflection for the quick nondestructive evaluation of large composite laminates , 1994 .

[4]  N. Hu,et al.  FEM modeling of adaptive composite structures using a reduced higher-order plate theory via penalty functions , 2001 .

[5]  Fu-Kuo Chang,et al.  Identifying Delamination in Composite Beams Using Built-In Piezoelectrics: Part I—Experiments and Analysis , 1995 .

[6]  Masaki Kameyama,et al.  Vibration analysis of delaminated composite beams and plates using a higher-order finite element , 2002 .

[7]  J. E. Grady,et al.  Free vibrations of delaminated beams , 1991 .

[8]  L. Penn,et al.  Use of the Free Vibration Spectrum to Detect Delamination in Thick Composites , 1999 .

[9]  F. Chang,et al.  Identifying Delamination in Composite Beams Using Built-In Piezoelectrics , 1995 .

[10]  Craig A. Rogers,et al.  Local-area health monitoring of aircraft via piezoelectric actuator/sensor patches , 1995, Smart Structures.

[11]  Daniel J. Inman,et al.  An experimentally validated damage detection theory in smart structures , 1996 .

[12]  D. Inman,et al.  Health monitoring and active control of composite structures using piezoceramic patches , 1999 .

[13]  Cliff J. Lissenden,et al.  Damage Detection by Piezoelectric Patches in a Free Vibration Method , 1997 .

[14]  Peter F. Lichtenwalner,et al.  Active damage interrogation system for structural health monitoring , 1997, Smart Structures.

[15]  M. Saafi,et al.  Health monitoring of concrete structures strengthened with advanced composite materials using piezoelectric transducers , 2001 .

[16]  Sathya Hanagud,et al.  Dynamics of delaminated beams , 2000 .