Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study
CL-20 explosive has a wide engineering application foresight due to its high energy while is limited by its mechanical sensitivity. In this regard, to study its ignition mechanisms under impact and to determine the main ignition sources, drop-weight experiments on CL-20 explosive crystals were carri...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co. Ltd.
2020-09-01
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| Series: | Energetic Materials Frontiers |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666647220300191 |
| _version_ | 1797936367266693120 |
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| author | Chuanguo Chai Jianming Zhang Shaojun Yu Jinjiang Xu Qian Yu Xiaogan Dai Yushi Wen Ming Li |
| author_facet | Chuanguo Chai Jianming Zhang Shaojun Yu Jinjiang Xu Qian Yu Xiaogan Dai Yushi Wen Ming Li |
| author_sort | Chuanguo Chai |
| collection | DOAJ |
| description | CL-20 explosive has a wide engineering application foresight due to its high energy while is limited by its mechanical sensitivity. In this regard, to study its ignition mechanisms under impact and to determine the main ignition sources, drop-weight experiments on CL-20 explosive crystals were carried out and recorded by a high-speed photography camera. Various configurations, e.g., film, ring, open ring and strips, were designed to explore primary ignition mechanisms and exclude secondary possible sources. The results show that the main ignition mechanism of CL-20 under drop-weight impact is the adiabatic compression of trapped gases. These trapped gases were mainly from the decomposition of CL-20 itself when melting. Our findings indicate that methods focusing on melting suppression should be considered to reduce the CL-20 sensitivity under impact. |
| first_indexed | 2024-04-10T18:28:40Z |
| format | Article |
| id | doaj.art-43b2262e1cc8411c847d2fc57a36000a |
| institution | Directory Open Access Journal |
| issn | 2666-6472 |
| language | English |
| last_indexed | 2024-04-10T18:28:40Z |
| publishDate | 2020-09-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Energetic Materials Frontiers |
| spelling | doaj.art-43b2262e1cc8411c847d2fc57a36000a2023-02-02T04:49:58ZengKeAi Communications Co. Ltd.Energetic Materials Frontiers2666-64722020-09-0112117122Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic studyChuanguo Chai0Jianming Zhang1Shaojun Yu2Jinjiang Xu3Qian Yu4Xiaogan Dai5Yushi Wen6Ming Li7Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaInstitute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaInstitute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaInstitute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaInstitute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaCorresponding author.; Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaCorresponding author.; Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaInstitute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, ChinaCL-20 explosive has a wide engineering application foresight due to its high energy while is limited by its mechanical sensitivity. In this regard, to study its ignition mechanisms under impact and to determine the main ignition sources, drop-weight experiments on CL-20 explosive crystals were carried out and recorded by a high-speed photography camera. Various configurations, e.g., film, ring, open ring and strips, were designed to explore primary ignition mechanisms and exclude secondary possible sources. The results show that the main ignition mechanism of CL-20 under drop-weight impact is the adiabatic compression of trapped gases. These trapped gases were mainly from the decomposition of CL-20 itself when melting. Our findings indicate that methods focusing on melting suppression should be considered to reduce the CL-20 sensitivity under impact.http://www.sciencedirect.com/science/article/pii/S2666647220300191CL-20 crystalsDrop-weight impactIgnition mechanismSample configurationsHigh-speed photography |
| spellingShingle | Chuanguo Chai Jianming Zhang Shaojun Yu Jinjiang Xu Qian Yu Xiaogan Dai Yushi Wen Ming Li Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study Energetic Materials Frontiers CL-20 crystals Drop-weight impact Ignition mechanism Sample configurations High-speed photography |
| title | Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study |
| title_full | Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study |
| title_fullStr | Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study |
| title_full_unstemmed | Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study |
| title_short | Drop-weight impact ignition of CL-20 crystals caused by trapped gases: A high-speed photographic study |
| title_sort | drop weight impact ignition of cl 20 crystals caused by trapped gases a high speed photographic study |
| topic | CL-20 crystals Drop-weight impact Ignition mechanism Sample configurations High-speed photography |
| url | http://www.sciencedirect.com/science/article/pii/S2666647220300191 |
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