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. 2021 Jan 19;21(2):648.
doi: 10.3390/s21020648.

Design and Validation of a Scalable, Reconfigurable and Low-Cost Structural Health Monitoring System

Juan J Villacorta  1 , Lara Del-Val  2 , Roberto D Martínez  3 , José-Antonio Balmori  3 , Álvaro Magdaleno  2 , Gamaliel López  3 , Alberto Izquierdo  1 , Antolín Lorenzana  2 , Luis-Alfonso Basterra  3
Affiliations

Design and Validation of a Scalable, Reconfigurable and Low-Cost Structural Health Monitoring System

Juan J Villacorta et al. Sensors (Basel). .

Abstract

This paper presents the design, development and testing of a low-cost Structural Health Monitoring (SHM) system based on MEMS (Micro Electro-Mechanical Systems) triaxial accelerometers. A new control system composed by a myRIO platform, managed by specific LabVIEW software, has been developed. The LabVIEW software also computes the frequency response functions for the subsequent modal analysis. The proposed SHM system was validated by comparing the data measured by this set-up with a conventional SHM system based on piezoelectric accelerometers. After carrying out some validation tests, a high correlation can be appreciated in the behavior of both systems, being possible to conclude that the proposed system is sufficiently accurate and sensitive for operative purposes, apart from being significantly more affordable than the traditional one.

Keywords: MEMS accelerometers; low-cost SHM; myRIO platform; non-destructive testing.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Proposed system architecture.
Figure 2
Figure 2
(a) ADXL355 accelerometer (b) adaptor board (c) 3D printed box (d) sensor assembled.
Figure 3
Figure 3
MyRIO device with two adapter boards and an accelerometer.
Figure 4
Figure 4
Distributed system configuration.
Figure 5
Figure 5
Stand-alone system configuration.
Figure 6
Figure 6
Elevation view of the measurement layout for the validation tests.
Figure 7
Figure 7
Measurement layout.
Figure 8
Figure 8
Time signals of accelerometers at the excitation sensors position. (a) Full signal. (b) Zoom between 10 and 11 s. (c) Zoom between 152 and 153 s.
Figure 9
Figure 9
Time signals of accelerometers at position E4. (a) Full signal. (b) Zoom between 140 and 145 s. (c) Zoom between 140 and 140.5 s. (d) Zoom between 142.5 and 143 s. (e) Zoom between 330 and 335 s. (f) Zoom between 333 and 333.5 s.
Figure 10
Figure 10
Frequency Response Function from 4.5 to 50 Hz.
Figure 11
Figure 11
Frequency Response Function centered at the main resonance.
Figure 12
Figure 12
Frequency Response Function with resolution increased.
See this image and copyright information in PMC

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