Feasibility study of ultrasonic guided wave inspection of fuel cell plate welds

燃料电池板焊缝超声导波检测的可行性研究

• 批准号: 514815-2017
• 负责人: Belanger, Pierre
• 金额: $ 1.82万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639633
• 关键词: Feasibility; study; ultrasonic; guided; wave

Mercedes-Benz Fuel Cell (MBFC) is a division of Mercedes-Benz Canada and is responsible for Daimler'sglobal production of current fuel cell stacks. An individual fuel cell plate is made of two thin steel plates laserwelded together. The laser welding process is used to hold the two steel plates together as well as to sealchannels between the plates. However, MBFC is currently unable to inspect the welds in a non-destructivemanner. The aim of this project is to characterize and assess weld using ultrasonic techniques. The proposedproject will evaluate the correlation between the ultrasonic guided wave energy transmitted and reflected froma weld to its condition (sealed, unsealed, and partially sealed). As the plates are thin, high frequency will needto be employed and therefore transducers will need to be developed.

梅赛德斯-奔驰燃料电池 (MBFC) 是梅赛德斯-奔驰加拿大公司的一个部门，负责戴姆勒当前燃料电池组的全球生产。单个燃料电池板由两块薄钢板激光焊接在一起制成。激光焊接工艺用于将两块钢板固定在一起并密封板之间的通道。然而，MBFC 目前无法以非破坏性方式检查焊缝。该项目的目的是使用超声波技术来表征和评估焊接。拟议项目将评估从焊缝传输和反射的超声波导波能量与其状况（密封、未密封和部分密封）之间的相关性。由于板很薄，因此需要采用高频，因此需要开发换能器。