What does this research mean for the field?

A proposed metrological assurance framework demonstrates that the ADXL355 MEMS accelerometer satisfies ISO 16063-21 requirements and accurately estimates natural frequencies for structural health monitoring in seismically active regions. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The research aims to establish a robust calibration and uncertainty framework for MEMS accelerometers used in seismic structural health monitoring.

June 10, 2026Open Access

Metrological calibration and uncertainty evaluation of MEMS accelerometers for structural health monitoring in seismic regions

Key Points

The research aims to establish a robust calibration and uncertainty framework for MEMS accelerometers used in seismic structural health monitoring.
Developed a metrological assurance framework for MEMS accelerometers.
Integrated ISO 16063-21 calibration and JCGM 100 (GUM) uncertainty evaluation.
Validated performance in the field on a five-story building in Tashkent.
The expanded uncertainty ranged from 2.3% to 5.8%.
ADXL355 estimated natural frequencies within 1.2% of a reference accelerometer (R²=0.999).
ADXL355 satisfies ISO 16063-21 requirements, indicating adequate performance for seismic zones VII-IX.

Abstract

This study presents a metrological assurance framework for MEMS accelerometers used in structural health monitoring (SHM) of buildings in seismically active regions. The methodology integrates ISO 16063-21 calibration, JCGM 100 (GUM) uncertainty evaluation, and field validation. Three MEMS accelerometers (ADXL355, MPU-6050, LIS3DHH) were calibrated across 1-200 Hz at 0.1-1.0 g. The expanded uncertainty ( k = 2) ranged from 2.3 % to 5.8 %. Field validation on a five-story building in Tashkent confirmed that the ADXL355 estimates natural frequencies within 1.2 % of a reference accelerometer ( R 2 = 0.999). The ADXL355 satisfies ISO 16063-21 requirements and provides adequate performance for seismic zones VII-IX. The proposed framework contributes to standardized low-cost vibration monitoring procedures in Central Asia.

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