A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT)
Acoustic emission technique can monitor the fatigue damage state of composite materials in real time. The identification accuracy of damage state depends on the processing and extraction of acoustic emission signals. A method of the acoustic emission signal processing based on harmonic wavelet power...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2022-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.06.09 |
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| author | YU FangAi ZHOU Bo ZHANG XueYan XIN Wen |
| author_facet | YU FangAi ZHOU Bo ZHANG XueYan XIN Wen |
| author_sort | YU FangAi |
| collection | DOAJ |
| description | Acoustic emission technique can monitor the fatigue damage state of composite materials in real time. The identification accuracy of damage state depends on the processing and extraction of acoustic emission signals. A method of the acoustic emission signal processing based on harmonic wavelet power spectrum and energy spectrum is proposed. The damage state of composite materials with delamination defects can be identified. First, the uniaxial tensile experiment was carried out on the composite laminates with or without delamination defects. The acoustic emission signals during the process of damage evolution were recorded. Then, the frequency distribution range of different damage modes based on the harmonic wavelet packet decomposition was obtained according to the damage characteristics analyzed by frequency spectrum and energy spectrum. Compared with the traditional wavelet analysis, the harmonic wavelet analysis can detect the different damage characteristics and damage modes of composite blade with delamination defects accurately. It can be used to detect the operated state for in-service blades in practical engineering. |
| format | Article |
| id | doaj-art-38a97fc0cbae478eb1f04ca058f722e0 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-38a97fc0cbae478eb1f04ca058f722e02025-01-15T02:39:53ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-011327133436351199A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT)YU FangAiZHOU BoZHANG XueYanXIN WenAcoustic emission technique can monitor the fatigue damage state of composite materials in real time. The identification accuracy of damage state depends on the processing and extraction of acoustic emission signals. A method of the acoustic emission signal processing based on harmonic wavelet power spectrum and energy spectrum is proposed. The damage state of composite materials with delamination defects can be identified. First, the uniaxial tensile experiment was carried out on the composite laminates with or without delamination defects. The acoustic emission signals during the process of damage evolution were recorded. Then, the frequency distribution range of different damage modes based on the harmonic wavelet packet decomposition was obtained according to the damage characteristics analyzed by frequency spectrum and energy spectrum. Compared with the traditional wavelet analysis, the harmonic wavelet analysis can detect the different damage characteristics and damage modes of composite blade with delamination defects accurately. It can be used to detect the operated state for in-service blades in practical engineering.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.06.09Wind turbine bladeAcoustic emission signalComposite materialsHarmonic waveletDamage |
| spellingShingle | YU FangAi ZHOU Bo ZHANG XueYan XIN Wen A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) Jixie qiangdu Wind turbine blade Acoustic emission signal Composite materials Harmonic wavelet Damage |
| title | A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) |
| title_full | A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) |
| title_fullStr | A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) |
| title_full_unstemmed | A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) |
| title_short | A STUDY ON FATIGUE DAMAGE IDENTIFICATION METHOD OF A BLADE COMPOSITE LAMINATE WITH DELAMINATION DEFECTS (MT) |
| title_sort | study on fatigue damage identification method of a blade composite laminate with delamination defects mt |
| topic | Wind turbine blade Acoustic emission signal Composite materials Harmonic wavelet Damage |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.06.09 |
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