Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects
Pyrotechnic devices are used to separate substructures from main structures. Pyroshock can cause failure in electronic components that are sensitive to high frequency shock. Most of the existing methods to analyze pyroshock have limitations for high frequency simulations and are only available for s...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2017/8351791 |
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| _version_ | 1832548421389516800 |
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| author | Yong-Woon Kim Jae-Kyeong Jang Jung-Ryul Lee |
| author_facet | Yong-Woon Kim Jae-Kyeong Jang Jung-Ryul Lee |
| author_sort | Yong-Woon Kim |
| collection | DOAJ |
| description | Pyrotechnic devices are used to separate substructures from main structures. Pyroshock can cause failure in electronic components that are sensitive to high frequency shock. Most of the existing methods to analyze pyroshock have limitations for high frequency simulations and are only available for simulation of point explosive-induced pyroshock. To solve the problem of existing methods, we developed a laser shock-based pyroshock reconstruction algorithm covering high frequency range that can predict linear explosive-induced pyroshock, as well as point explosive-induced ones. The developed algorithm reconstructs pyroshock from laser shock test in both temporal and spectral domains using an iterative signal decomposition and synthesis method. In the signal decomposition and synthesis process, unremoved signals in the stopbands occurred and were compensated by iteration to improve the results. At the end of this paper, various types of pyroshock were processed through the proposed method. Pyroshock wave propagation images and shock response spectrum images were presented as a result. To verify the algorithm, we compared the obtained result with a real pyroshock. The time domain signal was reconstructed with an averaged peak to peak acceleration difference of 20.21%, and the shock response spectrum was reconstructed with an average mean acceleration difference of 25.86%. |
| format | Article |
| id | doaj-art-ae17c040141a4d1ab107e95aed9fb84c |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-ae17c040141a4d1ab107e95aed9fb84c2025-02-03T06:14:09ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/83517918351791Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band EffectsYong-Woon Kim0Jae-Kyeong Jang1Jung-Ryul Lee2Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of KoreaDepartment of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of KoreaDepartment of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of KoreaPyrotechnic devices are used to separate substructures from main structures. Pyroshock can cause failure in electronic components that are sensitive to high frequency shock. Most of the existing methods to analyze pyroshock have limitations for high frequency simulations and are only available for simulation of point explosive-induced pyroshock. To solve the problem of existing methods, we developed a laser shock-based pyroshock reconstruction algorithm covering high frequency range that can predict linear explosive-induced pyroshock, as well as point explosive-induced ones. The developed algorithm reconstructs pyroshock from laser shock test in both temporal and spectral domains using an iterative signal decomposition and synthesis method. In the signal decomposition and synthesis process, unremoved signals in the stopbands occurred and were compensated by iteration to improve the results. At the end of this paper, various types of pyroshock were processed through the proposed method. Pyroshock wave propagation images and shock response spectrum images were presented as a result. To verify the algorithm, we compared the obtained result with a real pyroshock. The time domain signal was reconstructed with an averaged peak to peak acceleration difference of 20.21%, and the shock response spectrum was reconstructed with an average mean acceleration difference of 25.86%.http://dx.doi.org/10.1155/2017/8351791 |
| spellingShingle | Yong-Woon Kim Jae-Kyeong Jang Jung-Ryul Lee Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects Shock and Vibration |
| title | Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects |
| title_full | Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects |
| title_fullStr | Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects |
| title_full_unstemmed | Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects |
| title_short | Pyroshock Acceleration Field Reconstruction in Temporal and Spectral Domains Based on Laser Shock Scanning and Iterative Decomposition and Synthesis Considering Stop Band Effects |
| title_sort | pyroshock acceleration field reconstruction in temporal and spectral domains based on laser shock scanning and iterative decomposition and synthesis considering stop band effects |
| url | http://dx.doi.org/10.1155/2017/8351791 |
| work_keys_str_mv | AT yongwoonkim pyroshockaccelerationfieldreconstructionintemporalandspectraldomainsbasedonlasershockscanninganditerativedecompositionandsynthesisconsideringstopbandeffects AT jaekyeongjang pyroshockaccelerationfieldreconstructionintemporalandspectraldomainsbasedonlasershockscanninganditerativedecompositionandsynthesisconsideringstopbandeffects AT jungryullee pyroshockaccelerationfieldreconstructionintemporalandspectraldomainsbasedonlasershockscanninganditerativedecompositionandsynthesisconsideringstopbandeffects |