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Design and Use of a Guided Weight Impactor to Impart Barely Visible Impact Damage.
| 题名： | Design and Use of a Guided Weight Impactor to Impart Barely Visible Impact Damage. |
| 作者： | Lovejoy, A. E.; Przekop, A. |
| 关键词： | Composite structures, Aerodynamic configurations, Impact damage, Structural design, Pressure distribution, Compression loads, Fuselages, Impactors, Military technology, Loads (forces), Structural members |
| 摘要： | Aircraft structure is required to demonstrate satisfaction of the FAR requirements for Category 1, such as barely visible impact damage (BVID). Typical aircraft structure is impacted using a dropped weight impactor, which can impart BVID to the top surface of the structure. A recent test of a multi-bay box (MBB) composite test article, that represents an 80% scale center section of a hybrid wing body aircraft, required impact to be in a direction other than vertical from above, but still in an direction that is normal to the surface. This requirement eliminated the use of the conventional dropped weight impactor. Therefore, a design study was undertaken to determine the most effective way to efficiently and reliably impact the MBB. The chosen design was a guided weight impactor that is gravity driven. This paper describes the design of the guided weight impactor, and presents the results of its use for imparting BVID to the MBB. The guided weight impactor was seen to be a very reliable method to impart BVID, while at the same time having the capability to be highly configurable for use on other aircraft structure that is impacted at a variety of impact energies and from a variety of directions. |
| 总页数： | Lovejoy, A. E.; Przekop, A. |
| 报告类型： | 科技报告 |
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