Damage Assessment for a Sandwich-Like Panel Using Experimental and Numerical Analysis of Guided Waves

Kaleeswaran Balasubramaniam, Piotr Fiborek, Shirsendu Sikdar, Pawel H. Malinowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The presence of damage significantly affects the system’s performance. Various damage detection methods are available to identify damage in engineering structures. The guided wave propagation-based nondestructive evaluation (NDE) methods have proven their potential to effectively identify damage in such advanced structures due to the long-distance inspection capability and the capacity to interrogate the whole thickness of a structure. Therefore, in the present study, the laser Doppler vibrometer (LDV) and numerical simulations are used to study the guided wave propagation and their capabilities to identify different types of damage regions in a sandwich-like structure comprising of an aramid core and aluminum skin. The piezoelectric sensor-based excitation is used. The damage involved in this study is barely visible impact damage (BVID) of different diameters and a hole. The presence of damages causes abrupt changes to the wave field of the guided waves. Full field and elliptical-based signal processing methods are used in determining the region of damage. Thus, the damage region is visualized in this comparative study.

Original languageEnglish
Title of host publicationAdvances in Non-destructive Evaluation - Proceedings of NDE 2019
EditorsC. K. Mukhopadhyay, Ravibabu Mulaveesala
Number of pages12
ISBN (Print)9789811601859
Publication statusPublished - 29 Jun 2021
EventConference and Exhibition on Non Destructive Evaluation - Bengaluru, India
Duration: 5 Dec 20197 Dec 2019

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364


ConferenceConference and Exhibition on Non Destructive Evaluation
Abbreviated titleNDE 2019


  • Barely visible impact damage
  • Guided waves
  • Lamb waves
  • Laser vibrometry

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