Monitoring Time-Varying Changes of Historic Structures Through Photogrammetry-Driven Digital Twinning
This addresses the need for stakeholders in cultural heritage preservation to track deterioration over time, rather than at single moments, though it appears incremental as it builds on existing digital twin concepts applied to a specific domain.
The authors tackled the problem of monitoring structural deterioration over time in historic structures by proposing a novel five-component digital twin framework, validated on a casemate in Fort Soledad, Guam, confirming its effectiveness for time-varying change monitoring.
Historic structures are important for our society but could be prone to structural deterioration due to long service durations and natural impacts. Monitoring the deterioration of historic structures becomes essential for stakeholders to take appropriate interventions. Existing work in the literature primarily focuses on assessing the structural damage at a given moment instead of evaluating the development of deterioration over time. To address this gap, we proposed a novel five-component digital twin framework to monitor time-varying changes in historic structures. A testbed of a casemate in Fort Soledad on the island of Guam was selected to validate our framework. Using this testbed, key implementation steps in our digital twin framework were performed. The findings from this study confirm that our digital twin framework can effectively monitor deterioration over time, which is an urgent need in the cultural heritage preservation community.