Identification of delamination defects through covariance of energy change: numerical modeling
Delamination is currently a difficult detectable form of damage in composite laminate materials. This paper presents a method to more easily detect delamination damage within composite materials using finite element analysis modeling, through the covariance of energy change. Lamb waves were introduc...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2016-09-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2014-0271 |
| _version_ | 1818584082546688000 |
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| author | Bruhschwein Taylor Yang Mijia |
| author_facet | Bruhschwein Taylor Yang Mijia |
| author_sort | Bruhschwein Taylor |
| collection | DOAJ |
| description | Delamination is currently a difficult detectable form of damage in composite laminate materials. This paper presents a method to more easily detect delamination damage within composite materials using finite element analysis modeling, through the covariance of energy change. Lamb waves were introduced and recorded through an actuator and sensors made of piezoelectric material. The data were then analyzed through the fast Fourier transform (FFT). Using the data from the FFT, the idea of covariance of energy change was suggested to correlate with defect characteristics. By comparing the covariance of energy change in beams with different delamination sizes, thicknesses, and depths, correlations between the covariance of energy loss and defect characteristics were able to be developed. With these correlations, the severity of these damages was able to be quantified. |
| first_indexed | 2024-12-16T08:15:31Z |
| format | Article |
| id | doaj.art-4147a8a21d1d4cc99a3f09820860cd78 |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-16T08:15:31Z |
| publishDate | 2016-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-4147a8a21d1d4cc99a3f09820860cd782022-12-21T22:38:15ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592016-09-0123555156310.1515/secm-2014-0271Identification of delamination defects through covariance of energy change: numerical modelingBruhschwein Taylor0Yang Mijia1Department of Civil and Environmental Engineering, North Dakota State University, Fargo, ND 58108, USADepartment of Civil and Environmental Engineering, North Dakota State University, Fargo, ND 58108, USADelamination is currently a difficult detectable form of damage in composite laminate materials. This paper presents a method to more easily detect delamination damage within composite materials using finite element analysis modeling, through the covariance of energy change. Lamb waves were introduced and recorded through an actuator and sensors made of piezoelectric material. The data were then analyzed through the fast Fourier transform (FFT). Using the data from the FFT, the idea of covariance of energy change was suggested to correlate with defect characteristics. By comparing the covariance of energy change in beams with different delamination sizes, thicknesses, and depths, correlations between the covariance of energy loss and defect characteristics were able to be developed. With these correlations, the severity of these damages was able to be quantified.https://doi.org/10.1515/secm-2014-0271compositecovariance of energy changedelaminationfftlamb wave |
| spellingShingle | Bruhschwein Taylor Yang Mijia Identification of delamination defects through covariance of energy change: numerical modeling Science and Engineering of Composite Materials composite covariance of energy change delamination fft lamb wave |
| title | Identification of delamination defects through covariance of energy change: numerical modeling |
| title_full | Identification of delamination defects through covariance of energy change: numerical modeling |
| title_fullStr | Identification of delamination defects through covariance of energy change: numerical modeling |
| title_full_unstemmed | Identification of delamination defects through covariance of energy change: numerical modeling |
| title_short | Identification of delamination defects through covariance of energy change: numerical modeling |
| title_sort | identification of delamination defects through covariance of energy change numerical modeling |
| topic | composite covariance of energy change delamination fft lamb wave |
| url | https://doi.org/10.1515/secm-2014-0271 |
| work_keys_str_mv | AT bruhschweintaylor identificationofdelaminationdefectsthroughcovarianceofenergychangenumericalmodeling AT yangmijia identificationofdelaminationdefectsthroughcovarianceofenergychangenumericalmodeling |