Equipment for Multiple Projects: Testing and Visualization for Aerospace Research

适用于多个项目的设备：航空航天研究的测试和可视化

• 批准号: EP/F026099/1
• 负责人: Richard Butler
• 金额: $ 34.95万
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF026099%2F1
• 关键词: Equipment; Multiple; Projects; Testing; Visualization

(i) Modelling and Optimisation of Composite Materials and Structures The Bath Composites Research Unit has ongoing work relating to modelling and optimisation of laminated coupons, sub-components (stiffened-panels and flow control devices) and, components (wing boxes). In order to gain maximum benefit from composite materials there is a need to validate and inform this modelling by physical testing, and visualization of the response to such tests. This allows insight into internal micro/macro structures, damage tolerance, and the effects of physical loads. Clearly, it is prohibitive to test at the full component (wing) level but behaviour at, and below, the sub-component level can be monitored through access to state of the art technology. The theme of the proposal in relation to modelling and optimisation of composites is therefore to obtain equipment that enables structural testing and visualisation at sub-component and coupon level. It will enhance the activities of eight ongoing projects in this area.(ii) Non-Destructive Evaluation (NDE) of compositesThe advent of large composite components and structures presents a major new inspection problem because large areas (many square metres) of surface require detailed inspection during manufacture and in-service. Composites are particularly vulnerable to impact damage caused by comparatively minor low velocity impacts both during manufacture and in-service. This damage takes the form of hidden delaminations below the impacted surface between composite plies. At the surface there may be little or no evidenced of the impact and for this reason the damage is known as barely visible impact damage (BVID). Such internal damage can lead to significant reduction in local strength. The initial delaminations can grow under alternating or fluctuating stress leading to a loss in stiffness and possibly, catastrophic failure. It is therefore vital to detect and monitor damage in high-loaded composite components and to relate this to the reduction of residual strength via the use of advanced, robust and reliable visualization techniques. The proposal seeks to obtain equipment to enhance NDE techniques being pioneered at Bath.(iii) Vortex Flows & Unsteady AerodynamicsThe aerodynamics projects related to this proposal are generic fluid-structure interactions and are relevant to Unmanned Air Vehicles and Micro Air Vehicles. These vehicles will be highly manoeuvrable, extremely light weight and highly flexible. Hence, strong fluid-structure interactions are expected. The proposed equipment will provide the structural modal shapes and vibration frequencies of models used in experimental tests covering flexible delta wings, flexible flapping wings and membrane wings. These will be combined with aerodynamic measurements to obtain the full aeroelastic response of these wings.

(i)复合材料和结构的建模和优化巴斯复合材料研究部门正在进行与层压试样、子部件（加强板和流量控制装置）和部件（翼盒）的建模和优化相关的工作。为了从复合材料中获得最大利益，需要通过物理测试和对此类测试的响应的可视化来验证和告知这种建模。这允许洞察内部微观/宏观结构、损伤容限和物理载荷的影响。显然，在全部件（机翼）水平上进行试验是不允许的，但在子部件水平上和以下的性能可以通过使用最先进的技术来监测。因此，与复合材料建模和优化相关的提案主题是获得能够在子组件和试样级别进行结构测试和可视化的设备。它将加强这一领域八个正在进行的项目的活动。(ii)复合材料的非破坏性评估（NDE）大型复合材料部件和结构的出现提出了一个主要的新的检测问题，因为大面积（许多平方米）的表面需要在制造和使用过程中进行详细的检测。复合材料在制造和使用过程中特别容易受到相对较小的低速冲击造成的冲击损伤。这种损伤的形式是复合材料层之间的受冲击表面下方的隐藏分层。在表面上，可能很少或没有撞击的迹象，因此这种损坏被称为几乎不可见的撞击损坏（BVID）。这种内部损伤会导致局部强度的显著降低。初始脱层可在交变或波动应力下增长，导致刚度损失，并可能导致灾难性故障。因此，检测和监测高载荷复合材料部件的损伤并通过使用先进、稳健和可靠的可视化技术将其与剩余强度的降低联系起来至关重要。该提案旨在获得设备来增强巴斯首创的NDE技术。(iii)涡流和非定常空气动力学与本提案相关的空气动力学项目是通用的流体-结构相互作用，与无人机和微型飞行器相关。这些车辆将具有高度机动性、极轻的重量和高度灵活性。因此，预计会有很强的流体-结构相互作用。拟议的设备将提供实验测试中使用的模型的结构模态形状和振动频率，包括柔性三角翼、柔性扑翼和薄膜翼。这些将与气动力测量相结合，以获得这些机翼的全部气动弹性响应。

项目成果

The effect of tow gaps on compression after impact strength of AFP laminates

丝束间隙对 AFP 层压材料冲击后压缩强度的影响

• 发表时间: 2012
• 期刊: ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
• 作者: Rhead A.T.

Polymer Composites in the Aerospace Industry

航空航天工业中的聚合物复合材料

• DOI: 10.1016/b978-0-85709-523-7.00004-9
• 发表时间: 2015
• 作者: Butler R

Modelling of as manufactured geometry for prediction of impact and compression after impact behaviour of variable angle tow laminates

对制造几何形状进行建模，用于预测可变角度丝束层压板冲击后的冲击和压缩行为

• DOI: 10.1177/0021998314534707
• 发表时间: 2014
• 期刊: Journal of Composite Materials
• 影响因子: 2.9
• 作者: Dang T

Vortex coupling in trailing vortex-wing interactions

尾随涡翼相互作用中的涡耦合

• DOI: 10.1103/physrevfluids.3.034704
• 发表时间: 2018
• 期刊: Physical Review Fluids
• 影响因子: 2.7
• 作者: Chen C

Comparison of the defect detection capabilities of flash thermography and vibration excitation shearography

闪光热成像与振动激​​励剪切成像的缺陷检测能力比较

• DOI: 10.1784/insi.2010.52.2.78
• 发表时间: 2010
• 期刊: Insight - Non-Destructive Testing and Condition Monitoring
• 作者: Pickering S