手法を比較

	構造ヘルスモニタリング	モーダル解析
分野	土木工学	製造工学
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (formalized as a discipline ~1993–2001)	1975
提唱者	Multiple contributors (Charles Farrar, Keith Worden, and the broader SHM research community)	Clough, R. W., Penzien, J.
種類	Engineering monitoring and diagnostic framework	Computational method for structural dynamics
原典	Farrar, C. R., & Worden, K. (2007). An introduction to structural health monitoring. Philosophical Transactions of the Royal Society A, 365(1851), 303–315.	Clough, R. W., & Penzien, J. (1975). Dynamics of Structures. McGraw-Hill. ISBN: 0-07-011394-7
別名	SHM, damage detection monitoring, condition monitoring of structures, vibration-based structural monitoring	Eigenvalue analysis, Frequency response analysis, Natural frequencies
関連	3	4
概要	Structural Health Monitoring (SHM) is a process-based engineering methodology used in civil, mechanical, and aerospace engineering to continuously assess the condition of structures — bridges, buildings, dams, pipelines, and aircraft — through embedded or attached sensor networks. By acquiring real-time or periodic measurement data and applying signal processing and statistical pattern recognition, SHM aims to detect, locate, classify, and quantify damage before it reaches a critical state, enabling evidence-based maintenance decisions.	Modal analysis is a computational and experimental method for determining the natural frequencies and associated mode shapes of a mechanical structure. By decomposing structural vibration into its fundamental modes (natural oscillation patterns), engineers can predict resonance frequencies, assess dynamic response to external forces, and design structures to avoid problematic vibrations. Developed rigorously by Clough and Penzien in their foundational work on structural dynamics, modal analysis is essential for designing robust mechanical systems.