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

航空结构复合材料修复的先进超声波成像 (AURORAS)

• 批准号: 101669
• 金额: $ 72.16万
• 依托单位: N.D.T. CONSULTANTS LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=101669
• 关键词: Advanced; Ultrasonic; Imaging; Composite; Repairs

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.

复合材料结构因其刚性、重量轻和耐腐蚀而在飞机上得到越来越多的应用，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工作难度大，还不够发达，不能满足检验质量要求。极光公司将开发相控阵超声测试(PAUT)技术，将3D成像与高分辨率的“全聚焦方法”(TFM)相结合，以非破坏性地评估飞机结构复合材料部件的损伤。一旦损坏分类和大小确定后，将进行现场修复过程，并将使用针对复合材料修复材料优化的类似PAUT技术重新检查修复以发现缺陷。主要的项目成果将是原型系统规范、3D成像和TFM软件，展示复合材料修复部件的PAUT方法的演示试验。修理由合伙人提供的部件。