Next Article in Journal
Structural Safety Analysis of the Aqueducts “Coll De Foix” and “Capdevila” of the Canal of Aragon and Catalonia
Next Article in Special Issue
Peat Fibers and Finely Ground Peat Powder for Application in Asphalt
Previous Article in Journal
Hotels as Critical Hubs for Destination Disaster Resilience: An Analysis of Hotel Corporations’ CSR Activities Supporting Disaster Relief and Resilience
Article Menu
Issue 4 (December) cover image

Export Article

Open AccessArticle
Infrastructures 2018, 3(4), 47; https://doi.org/10.3390/infrastructures3040047

A Comparative Study of Laser Doppler Vibrometers for Vibration Measurements on Pavement Materials

1
EMIB Research Group, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
2
BIMEF Research Group, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
3
Op3Mech Research Group, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
*
Author to whom correspondence should be addressed.
Received: 5 October 2018 / Revised: 30 October 2018 / Accepted: 30 October 2018 / Published: 1 November 2018
(This article belongs to the Special Issue Recent Advance and Future Trends in Pavement Engineering)
  |  
PDF [1472 KB, uploaded 1 November 2018]
  |  

Abstract

A laser Doppler vibrometer (LDV) is a noncontact optical measurement device to measure the vibration velocities of particular points on the surface of an object. Even though LDV has become more popular in road engineering in recent years, their signal-to-noise ratio (SNR) is strongly dependent on light scattering properties of the surface which, in some cases, needs to be properly conditioned. SNR is the main limitation in LDV instrumentation when measuring on low diffusive surfaces like pavements; therefore, an investigation on the SNR of different LDV devices on different surface conditions is of great importance. The objective of this research is to investigate the quality of two types of commercially available LDV systems—helium–neon (He–Ne)-based vibrometers and recently developed infrared vibrometers—on different surface conditions, i.e., retroreflective tape, white tape, black tape, and asphalt concrete. Both noise floor and modal analysis experiments are carried out on these surface conditions. It is shown that the noise floor of the He–Ne LDV is higher when dealing with a noncooperative dark surface, such as asphalt concrete, and it can be improved by improving the surface quality or by using an infrared LDV, which consequently improves the modal analysis experiments performed on pavement materials. View Full-Text
Keywords: laser Doppler vibrometer (LDV); pavements; vibration measurement; noise floor; modal analysis laser Doppler vibrometer (LDV); pavements; vibration measurement; noise floor; modal analysis
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Hasheminejad, N.; Vuye, C.; Van den bergh, W.; Dirckx, J.; Vanlanduit, S. A Comparative Study of Laser Doppler Vibrometers for Vibration Measurements on Pavement Materials. Infrastructures 2018, 3, 47.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Infrastructures EISSN 2412-3811 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top