Importance of the near Lamb mode imaging of multilayered composite plates

Tribikram Kundu, C. Potel, J. F. De Belleval

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In recent years Lamb waves are being used for internal defect detection in multilayered composite plates. Different Lamb modes generate various stress levels in different layers. As a result, all Lamb modes are not equally sensitive to internal defects of various layers. A number of studies have been carried out to identify which Lamb mode is most effective for detecting defects in a specific layer. However, one shortcoming of the Lamb wave inspection technique is that in a symmetrically layered composite plate stress and displacement magnitudes and energy distribution profiles for all Lamb modes are symmetric about the central plane of the plate. As a result, the ability of a Lamb mode to detect defects in a specific layer of the plate is identical to its ability to detect defects in the corresponding layer of mirror symmetry. Hence, from the Lamb wave generated image one cannot distinguish between the defects in these two layers of mirror symmetry. In this paper it is investigated how by fine-tuning the frequency and the striking angle of the incident beam in the neighborhood of a Lamb mode one can separately detect internal defects in layers of mirror symmetry in the upper and lower halves of a plate.

Original languageEnglish (US)
Pages (from-to)283-290
Number of pages8
JournalUltrasonics
Volume39
Issue number4
DOIs
StatePublished - Jun 2001

Fingerprint

Imaging techniques
Defects
composite materials
defects
Composite materials
Lamb waves
Surface waves
Mirrors
mirrors
symmetry
Tuning
Inspection
inspection
energy distribution
tuning
profiles

Keywords

  • Lamb waves
  • Multilayered composite plates

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Acoustics and Ultrasonics

Cite this

Importance of the near Lamb mode imaging of multilayered composite plates. / Kundu, Tribikram; Potel, C.; De Belleval, J. F.

In: Ultrasonics, Vol. 39, No. 4, 06.2001, p. 283-290.

Research output: Contribution to journalArticle

Kundu, Tribikram ; Potel, C. ; De Belleval, J. F. / Importance of the near Lamb mode imaging of multilayered composite plates. In: Ultrasonics. 2001 ; Vol. 39, No. 4. pp. 283-290.
@article{4bbabd6a97aa40688caac4589610907d,
title = "Importance of the near Lamb mode imaging of multilayered composite plates",
abstract = "In recent years Lamb waves are being used for internal defect detection in multilayered composite plates. Different Lamb modes generate various stress levels in different layers. As a result, all Lamb modes are not equally sensitive to internal defects of various layers. A number of studies have been carried out to identify which Lamb mode is most effective for detecting defects in a specific layer. However, one shortcoming of the Lamb wave inspection technique is that in a symmetrically layered composite plate stress and displacement magnitudes and energy distribution profiles for all Lamb modes are symmetric about the central plane of the plate. As a result, the ability of a Lamb mode to detect defects in a specific layer of the plate is identical to its ability to detect defects in the corresponding layer of mirror symmetry. Hence, from the Lamb wave generated image one cannot distinguish between the defects in these two layers of mirror symmetry. In this paper it is investigated how by fine-tuning the frequency and the striking angle of the incident beam in the neighborhood of a Lamb mode one can separately detect internal defects in layers of mirror symmetry in the upper and lower halves of a plate.",
keywords = "Lamb waves, Multilayered composite plates",
author = "Tribikram Kundu and C. Potel and {De Belleval}, {J. F.}",
year = "2001",
month = "6",
doi = "10.1016/S0041-624X(01)00052-X",
language = "English (US)",
volume = "39",
pages = "283--290",
journal = "Ultrasonics",
issn = "0041-624X",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Importance of the near Lamb mode imaging of multilayered composite plates

AU - Kundu, Tribikram

AU - Potel, C.

AU - De Belleval, J. F.

PY - 2001/6

Y1 - 2001/6

N2 - In recent years Lamb waves are being used for internal defect detection in multilayered composite plates. Different Lamb modes generate various stress levels in different layers. As a result, all Lamb modes are not equally sensitive to internal defects of various layers. A number of studies have been carried out to identify which Lamb mode is most effective for detecting defects in a specific layer. However, one shortcoming of the Lamb wave inspection technique is that in a symmetrically layered composite plate stress and displacement magnitudes and energy distribution profiles for all Lamb modes are symmetric about the central plane of the plate. As a result, the ability of a Lamb mode to detect defects in a specific layer of the plate is identical to its ability to detect defects in the corresponding layer of mirror symmetry. Hence, from the Lamb wave generated image one cannot distinguish between the defects in these two layers of mirror symmetry. In this paper it is investigated how by fine-tuning the frequency and the striking angle of the incident beam in the neighborhood of a Lamb mode one can separately detect internal defects in layers of mirror symmetry in the upper and lower halves of a plate.

AB - In recent years Lamb waves are being used for internal defect detection in multilayered composite plates. Different Lamb modes generate various stress levels in different layers. As a result, all Lamb modes are not equally sensitive to internal defects of various layers. A number of studies have been carried out to identify which Lamb mode is most effective for detecting defects in a specific layer. However, one shortcoming of the Lamb wave inspection technique is that in a symmetrically layered composite plate stress and displacement magnitudes and energy distribution profiles for all Lamb modes are symmetric about the central plane of the plate. As a result, the ability of a Lamb mode to detect defects in a specific layer of the plate is identical to its ability to detect defects in the corresponding layer of mirror symmetry. Hence, from the Lamb wave generated image one cannot distinguish between the defects in these two layers of mirror symmetry. In this paper it is investigated how by fine-tuning the frequency and the striking angle of the incident beam in the neighborhood of a Lamb mode one can separately detect internal defects in layers of mirror symmetry in the upper and lower halves of a plate.

KW - Lamb waves

KW - Multilayered composite plates

UR - http://www.scopus.com/inward/record.url?scp=0035354334&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035354334&partnerID=8YFLogxK

U2 - 10.1016/S0041-624X(01)00052-X

DO - 10.1016/S0041-624X(01)00052-X

M3 - Article

C2 - 11432438

AN - SCOPUS:0035354334

VL - 39

SP - 283

EP - 290

JO - Ultrasonics

JF - Ultrasonics

SN - 0041-624X

IS - 4

ER -