通过可变形结构实现桥梁与飞机间跨域迁移，突破了异构系统健康监测难题。
When does a bridge become an aeroplane?
- 设计连续可变参数的中间结构，实现桥梁到飞机的渐进式形态过渡。
- 在模拟实验中成功实现两类差异极大的结构间的正向知识迁移。
- 为异构结构健康监测提供新思路，适合跨领域工程系统研究者。
尽管群体结构健康监测（PBSHM）取得进展，但高度异构结构之间的知识迁移仍具挑战。本文提出通过中间结构作为信息桥梁，实现不同结构间的迁移。核心思想是通过调整材料属性和几何参数，使一个结构可连续演化为另一个。研究以模拟的‘桥梁’与‘飞机’为例，验证了此类可插值结构的构建方法。此前曾提出‘桥梁何时不再是飞机？’这一问题，以探讨基于结构相似性的正向迁移可能性。虽然直观答案为‘始终不是’，但本研究表明，在特定条件下，高度异构系统之间仍可实现正向迁移，为跨域知识传递提供了新路径。
原文摘要 · Abstract (English)
Despite recent advances in population-based structural health monitoring (PBSHM), knowledge transfer between highly-disparate structures (i.e., heterogeneous populations) remains a challenge. It has been proposed that heterogeneous transfer may be accomplished via intermediate structures that bridge the gap in information between the structures of interest. A key aspect of the technique is the idea that by varying parameters such as material properties and geometry, one structure can be continuously morphed into another. The current work demonstrates the development of these interpolating structures, via case studies involving the parameterisation of (and transfer between) a simple, simulated 'bridge' and 'aeroplane'. The facetious question 'When is a bridge not an aeroplane?' has been previously asked in the context of predicting positive transfer based on structural similarity. While the obvious answer to this question is 'Always,' the current work demonstrates that in some cases positive transfer can be achieved between highly-disparate systems.
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