An Algorithm of Acoustic Emission Location for Complex Composite Structure
Acoustic emission (AE) is widely used in engineering and rock mechanics. The algorithm of AE location based on homogeneous medium or single velocity structure is confronted with lower accuracy when it is applied to the actual working conditions that are prevailing complicated and heterogeneous. In t...
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MDPI AG
2022-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/23/12323 |
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| author | Peixun Liu Yanshuang Guo Yanqun Zhuo Wenbo Qi Jiahui Feng Hao Chen Shunyun Chen |
| author_facet | Peixun Liu Yanshuang Guo Yanqun Zhuo Wenbo Qi Jiahui Feng Hao Chen Shunyun Chen |
| author_sort | Peixun Liu |
| collection | DOAJ |
| description | Acoustic emission (AE) is widely used in engineering and rock mechanics. The algorithm of AE location based on homogeneous medium or single velocity structure is confronted with lower accuracy when it is applied to the actual working conditions that are prevailing complicated and heterogeneous. In this paper, an AE location algorithm based on complex composite structure (CCS) is proposed via carrying out the following studies: (1) A new travel time calculation scheme suitable for CCS with step-like velocity change is proposed based on an optimized shortest path algorithm. By doing this, a reasonable ray path that is only deflected at the interface is obtained to improve the travel time accuracy. The time complexity of the new algorithm is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>O</mi><mrow><mo>(</mo><mrow><mi>n</mi><msub><mrow><mi>log</mi></mrow><mn>2</mn></msub><mi>n</mi></mrow><mo>)</mo></mrow></mrow></semantics></math></inline-formula>. (2) The availability of the new algorithm is verified via a theoretical analysis under a one-dimensional velocity structure as well as an AE experiment using a complex structure under artificial excitation. (3) The AE location during the failure of a simulated CCS in the laboratory indicates that the new algorithm can effectively calculate the travel time and ray path of the sample. |
| first_indexed | 2024-03-09T17:53:26Z |
| format | Article |
| id | doaj.art-8c99c2d058d143efa828a044205e80cc |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T17:53:26Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8c99c2d058d143efa828a044205e80cc2023-11-24T10:34:38ZengMDPI AGApplied Sciences2076-34172022-12-0112231232310.3390/app122312323An Algorithm of Acoustic Emission Location for Complex Composite StructurePeixun Liu0Yanshuang Guo1Yanqun Zhuo2Wenbo Qi3Jiahui Feng4Hao Chen5Shunyun Chen6State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaAcoustic emission (AE) is widely used in engineering and rock mechanics. The algorithm of AE location based on homogeneous medium or single velocity structure is confronted with lower accuracy when it is applied to the actual working conditions that are prevailing complicated and heterogeneous. In this paper, an AE location algorithm based on complex composite structure (CCS) is proposed via carrying out the following studies: (1) A new travel time calculation scheme suitable for CCS with step-like velocity change is proposed based on an optimized shortest path algorithm. By doing this, a reasonable ray path that is only deflected at the interface is obtained to improve the travel time accuracy. The time complexity of the new algorithm is <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>O</mi><mrow><mo>(</mo><mrow><mi>n</mi><msub><mrow><mi>log</mi></mrow><mn>2</mn></msub><mi>n</mi></mrow><mo>)</mo></mrow></mrow></semantics></math></inline-formula>. (2) The availability of the new algorithm is verified via a theoretical analysis under a one-dimensional velocity structure as well as an AE experiment using a complex structure under artificial excitation. (3) The AE location during the failure of a simulated CCS in the laboratory indicates that the new algorithm can effectively calculate the travel time and ray path of the sample.https://www.mdpi.com/2076-3417/12/23/12323complex composite structurethree-dimensional velocity modelacoustic emission locationthe shortest path methodray tracing |
| spellingShingle | Peixun Liu Yanshuang Guo Yanqun Zhuo Wenbo Qi Jiahui Feng Hao Chen Shunyun Chen An Algorithm of Acoustic Emission Location for Complex Composite Structure Applied Sciences complex composite structure three-dimensional velocity model acoustic emission location the shortest path method ray tracing |
| title | An Algorithm of Acoustic Emission Location for Complex Composite Structure |
| title_full | An Algorithm of Acoustic Emission Location for Complex Composite Structure |
| title_fullStr | An Algorithm of Acoustic Emission Location for Complex Composite Structure |
| title_full_unstemmed | An Algorithm of Acoustic Emission Location for Complex Composite Structure |
| title_short | An Algorithm of Acoustic Emission Location for Complex Composite Structure |
| title_sort | algorithm of acoustic emission location for complex composite structure |
| topic | complex composite structure three-dimensional velocity model acoustic emission location the shortest path method ray tracing |
| url | https://www.mdpi.com/2076-3417/12/23/12323 |
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