Advanced Ultrasonic Imaging of Composite Repairs in Aero-Structures (AURORAS)

复合材料结构在飞机上的应用越来越多，因为它们具有刚度、重量轻和耐腐蚀性，但对可能产生分层等缺陷的冲击损伤很敏感。可见的损坏区域使用粘接复合材料修复方法进行修复。修复过程对工艺参数很敏感，微小的变化会导致缺陷，从而降低机械完整性。复合材料修理的检验是困难的，而且尚未充分发展到满足检验质量要求。AURORAS将开发相控阵超声测试（pat）技术，该技术结合了3D成像和高分辨率“全聚焦法”（TFM），以非破坏性地评估航空结构复合材料部件的损伤。一旦对损坏进行分类和确定尺寸，将进行原位修复过程，并使用针对复合修复材料优化的类似pat技术对修复进行重新检查以检测缺陷。主要的项目交付成果将是一个原型系统规格，3D成像和TFM软件，展示复合材料修复部件的pat方法的演示试验。合作伙伴提供的维修。

Composite structures are increasingly utilised in aircraft for their stiffness, light weight and corrosion resistance but are sensitive to impact damage that can produce defects such delaminations . Damaged areas that are visible are repaired using an adhesively bonded composite repair method. The repair process is sensitive to process parameters and small variations will lead to defects that may result in reduced mechanical integrity. The inspection of composite repairs is difficult and not yet sufficiently developed to meet inspection quality requirements. AURORAS will develop the Phased Array Ultrasonic Test (PAUT) technique incorporating 3D imaging with high resolution 'Total Focusing Method' (TFM) to non-destructively assess the damage in aerostructure composite components. Once the damage has been classified and sized, an in-situ repair process will be undertaken and the repair will be re-inspected to detect defects using a similar PAUT technique optimised for the composite repair material. The main project deliverables will be a prototype system spec, 3D imaging & TFM software, a demonstration trial showing the PAUT method on composite repair components. repairomponents provided by the partners.