An adjoint-based procedure to determine weaknesses, or, more generally, the material properties of structures is developed and tested. Given a series of load cases and corresponding displacement/strain measurements, the material properties are obtained by minimizing the weighted differences between the measured and computed values. In a subsequent step, techniques to minimize the number of load cases and sensors are proposed and tested. Several examples show the viability, accuracy and efficiency of the proposed methodology and its potential use for high fidelity digital twins.

翻译：本文开发并测试了一种基于伴随法的结构缺陷（或更一般地，结构材料属性）确定流程。给定一系列荷载工况及对应的位移/应变测量值，通过最小化实测值与计算值的加权差异来获取材料属性。随后，提出了减少荷载工况与传感器数量的技术方案并进行了验证。多个算例展示了所提方法的可行性、准确性与效率，以及其在高保真数字孪生中的潜在应用价值。