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On quantifying damage severity in composite materials by an ultrasonic method.

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Title: On quantifying damage severity in composite materials by an ultrasonic method.
Authors: Pillarisetti, Lalith Sai Srinivas1 (AUTHOR) me15btech11026@iith.ac.in, Talreja, Ramesh1 (AUTHOR) talreja@tamu.edu
Source: Composite Structures. May2019, Vol. 216, p213-221. 9p.
Subjects: Adobe Flash (Computer software), Composite materials, Lamb waves
Abstract: Abstract This work reports a study aimed at quantifying damage severity in composite materials by an in-field inspection technique known as Acousto-Ultrasonics (AU) where Lamb waves are transmitted through a damage zone by exciting a pulse onto the composite surface and capturing the received waves after their interactions with the damage. It builds on a previous study that proposed as quantitative descriptors of the received signal a set of stress wave factors (SWFs) extracted from the power spectral density (PSD) distribution of the AU signal. The SWFs were previously shown to detect the spatial extent of impact damage, but the severity of the damage within the impact damage zone was not quantified. The present study takes a step in the direction to achieve that goal. Lamb waves are transmitted through a cross ply laminate in which transverse ply cracks of increasing density (number of cracks per unit axial length) are induced. The PSD distribution is first analyzed for the case of an undamaged laminate and then the SWFs are correlated with the crack density. The implications of the correlations obtained and the future prospects of quantifying the damage severity by such correlations are discussed. [ABSTRACT FROM AUTHOR]
Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 135352217
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: On quantifying damage severity in composite materials by an ultrasonic method.
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  Data: <searchLink fieldCode="AR" term="%22Pillarisetti%2C+Lalith+Sai+Srinivas%22">Pillarisetti, Lalith Sai Srinivas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> me15btech11026@iith.ac.in</i><br /><searchLink fieldCode="AR" term="%22Talreja%2C+Ramesh%22">Talreja, Ramesh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> talreja@tamu.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Composite+Structures%22">Composite Structures</searchLink>. May2019, Vol. 216, p213-221. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Adobe+Flash+%28Computer+software%29%22">Adobe Flash (Computer software)</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Lamb+waves%22">Lamb waves</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract This work reports a study aimed at quantifying damage severity in composite materials by an in-field inspection technique known as Acousto-Ultrasonics (AU) where Lamb waves are transmitted through a damage zone by exciting a pulse onto the composite surface and capturing the received waves after their interactions with the damage. It builds on a previous study that proposed as quantitative descriptors of the received signal a set of stress wave factors (SWFs) extracted from the power spectral density (PSD) distribution of the AU signal. The SWFs were previously shown to detect the spatial extent of impact damage, but the severity of the damage within the impact damage zone was not quantified. The present study takes a step in the direction to achieve that goal. Lamb waves are transmitted through a cross ply laminate in which transverse ply cracks of increasing density (number of cracks per unit axial length) are induced. The PSD distribution is first analyzed for the case of an undamaged laminate and then the SWFs are correlated with the crack density. The implications of the correlations obtained and the future prospects of quantifying the damage severity by such correlations are discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.compstruct.2019.02.087
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 213
    Subjects:
      – SubjectFull: Adobe Flash (Computer software)
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Lamb waves
        Type: general
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      – TitleFull: On quantifying damage severity in composite materials by an ultrasonic method.
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            NameFull: Pillarisetti, Lalith Sai Srinivas
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            NameFull: Talreja, Ramesh
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            – D: 15
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              Text: May2019
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              Y: 2019
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              Value: 216
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            – TitleFull: Composite Structures
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