Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth
In this paper, AE signals collected during fatigue crack-growth of aluminum and titanium alloys (Al7075-T6 and Ti-6Al-4V) were analyzed and compared. Both the aluminum and titanium alloys used in this study are prevalent materials in aerospace structures, which prompted this current investigation. T...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/8/8/1225 |
| _version_ | 1819211344941940736 |
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| author | Azadeh Keshtgar Christine M. Sauerbrunn Mohammad Modarres |
| author_facet | Azadeh Keshtgar Christine M. Sauerbrunn Mohammad Modarres |
| author_sort | Azadeh Keshtgar |
| collection | DOAJ |
| description | In this paper, AE signals collected during fatigue crack-growth of aluminum and titanium alloys (Al7075-T6 and Ti-6Al-4V) were analyzed and compared. Both the aluminum and titanium alloys used in this study are prevalent materials in aerospace structures, which prompted this current investigation. The effect of different loading conditions and loading frequencies on a proposed AE-based crack-growth model were studied. The results suggest that the linear model used to relate AE and crack growth is independent of the loading condition and loading frequency. Also, the model initially developed for the aluminum alloy proves to hold true for the titanium alloy while, as expected, the model parameters are material dependent. The model parameters and their distributions were estimated using a Bayesian regression technique. The proposed model was developed and validated based on post processing and Bayesian analysis of experimental data. |
| first_indexed | 2024-12-23T06:25:35Z |
| format | Article |
| id | doaj.art-6955081998b447ef87429646c23c1e8f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-23T06:25:35Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-6955081998b447ef87429646c23c1e8f2022-12-21T17:57:05ZengMDPI AGApplied Sciences2076-34172018-07-0188122510.3390/app8081225app8081225Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack GrowthAzadeh Keshtgar0Christine M. Sauerbrunn1Mohammad Modarres2Center for Risk and Reliability, University of Maryland, College Park, MD 20742, USACenter for Risk and Reliability, University of Maryland, College Park, MD 20742, USACenter for Risk and Reliability, University of Maryland, College Park, MD 20742, USAIn this paper, AE signals collected during fatigue crack-growth of aluminum and titanium alloys (Al7075-T6 and Ti-6Al-4V) were analyzed and compared. Both the aluminum and titanium alloys used in this study are prevalent materials in aerospace structures, which prompted this current investigation. The effect of different loading conditions and loading frequencies on a proposed AE-based crack-growth model were studied. The results suggest that the linear model used to relate AE and crack growth is independent of the loading condition and loading frequency. Also, the model initially developed for the aluminum alloy proves to hold true for the titanium alloy while, as expected, the model parameters are material dependent. The model parameters and their distributions were estimated using a Bayesian regression technique. The proposed model was developed and validated based on post processing and Bayesian analysis of experimental data.http://www.mdpi.com/2076-3417/8/8/1225reliabilityacoustic emissionstructural integritycrack growthfatigue life predictionuncertainty analysisnondestructive testing |
| spellingShingle | Azadeh Keshtgar Christine M. Sauerbrunn Mohammad Modarres Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth Applied Sciences reliability acoustic emission structural integrity crack growth fatigue life prediction uncertainty analysis nondestructive testing |
| title | Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth |
| title_full | Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth |
| title_fullStr | Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth |
| title_full_unstemmed | Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth |
| title_short | Structural Reliability Prediction Using Acoustic Emission-Based Modeling of Fatigue Crack Growth |
| title_sort | structural reliability prediction using acoustic emission based modeling of fatigue crack growth |
| topic | reliability acoustic emission structural integrity crack growth fatigue life prediction uncertainty analysis nondestructive testing |
| url | http://www.mdpi.com/2076-3417/8/8/1225 |
| work_keys_str_mv | AT azadehkeshtgar structuralreliabilitypredictionusingacousticemissionbasedmodelingoffatiguecrackgrowth AT christinemsauerbrunn structuralreliabilitypredictionusingacousticemissionbasedmodelingoffatiguecrackgrowth AT mohammadmodarres structuralreliabilitypredictionusingacousticemissionbasedmodelingoffatiguecrackgrowth |