手法を比較

	構造ヘルスモニタリング	有限要素解析	モーダル解析
分野	土木工学	材料科学	製造工学
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (formalized as a discipline ~1993–2001)	1943	1975
提唱者	Multiple contributors (Charles Farrar, Keith Worden, and the broader SHM research community)	Richard Courant	Clough, R. W., Penzien, J.
種類	Engineering monitoring and diagnostic framework	Computational method	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.	Zienkiewicz, O. C., & Taylor, R. L. (1977). The Finite Element Method in Engineering Science. McGraw-Hill.	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	FEA, finite element method	Eigenvalue analysis, Frequency response analysis, Natural frequencies
関連	3	4	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.	Finite Element Analysis (FEA) is a numerical technique for obtaining approximate solutions to boundary value problems described by differential equations. Developed systematically by Richard Courant in 1943 and popularized by Clough in the 1960s, FEA divides a complex domain into smaller, simpler elements to solve engineering problems involving stress, strain, heat transfer, and fluid flow. It is the dominant computational method in materials science for predicting material behavior under various loading conditions.	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.