Statistical classification of road pavements using near field vehicle rolling noise measurements

Paulo, Joel; Coelho, José; Figueiredo, Mário A. T.

doi:10.1121/1.3466870

Cited by 15 publications

(5 citation statements)

References 7 publications

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“…The set-up is based on the measurement system described in several papers, [24][25][26] in which the two mandatory free field microphones (1/2 in., equiped with windscreen) are located close the rear right side pneumatic of a self-powered vehicle, far from the exhaust pipe. The instrumental chain meets the requirement of the Type 1 according to the IEC standards.…”

Section: The Close Proximity (Cpx) Methodsmentioning

confidence: 99%

Durability and variability of the acoustical performance of rubberized road surfaces

et al. 2015

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a b s t r a c tThe use of road surfaces with low noise emission characteristics is one of the actions mostly applied all over the world to decrease the number of road traffic noise annoyed people. Since many Italian roads are going to be paved with such surfaces, the LEOPOLDO project (funded by the Tuscany Region and the Italian Ministry of Transportation) was planned to check the efficacy in time of this action. Among all solutions, rubberized road surface is one of the most applied in USA, Canada, Europe and Asia. This paper describes results obtained by monitoring four rubberized surfaces one year after the laying and by evaluating the time stability of LEOPOLDO one by means of the Close Proximity method (CPX). All surfaces here analyzed are laid in real scenarios, so the actual efficacy of this action is evaluated. The results on the LEOPOLDO surface show spatial homogeneity, a good time stability and a significant noise emission reduction. Instead, analysis of the four rubberized surfaces shows variability in the results, probably due to the pavement installation quality, as supported by the data. Thus, the rubberized road surface looks to be a very efficient mitigation technology, providing the installation have been carried out with care and proficiency.

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Section: The Close Proximity (Cpx) Methodsmentioning

confidence: 99%

Durability and variability of the acoustical performance of rubberized road surfaces

et al. 2015

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“…There are four distinct wave types that can be coupled to form acoustic waves due to complex interactions of tire dynamic with the road surface. These different effects on the tire are: (1) direct surface wave from impact source or vehicle; (2) acoustic radiation from vehicle and ambient; (3) elastic wave from this tire; (4) axle vibration [11–13]. The unique features of DTPS include: (1) the tire acts as a natural barrier to external noise; (2) the tire is directly in contact with the ground; (3) the instruments are protected from the environment; and (4) samples are taken in real-time.…”

Section: Theory and Methodsmentioning

confidence: 99%

Dynamic Tire Pressure Sensor for Measuring Ground Vibration

Wang

McDaniel

Wang

2012

Sensors

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This work presents a convenient and non-contact acoustic sensing approach for measuring ground vibration. This approach, which uses an instantaneous dynamic tire pressure sensor (DTPS), possesses the capability to replace the accelerometer or directional microphone currently being used for inspecting pavement conditions. By measuring dynamic pressure changes inside the tire, ground vibration can be amplified and isolated from environmental noise. In this work, verifications of the DTPS concept of sensing inside the tire have been carried out. In addition, comparisons between a DTPS, ground-mounted accelerometer, and directional microphone are made. A data analysis algorithm has been developed and optimized to reconstruct ground acceleration from DTPS data. Numerical and experimental studies of this DTPS reveal a strong potential for measuring ground vibration caused by a moving vehicle. A calibration of transfer function between dynamic tire pressure change and ground acceleration may be needed for different tire system or for more accurate application.

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“…Value of CPXI (80 km/h) index and maximum noise level under rolling statistic car with a speed of 80 km/h (L 1 (80)), according to SPB method, were taken as a criterion of classification. Distribution of road pavements into five classes has been proposed Gardziejczyk 2011 Classifications of pavements have been already worked out or are being in progress of their adaptation in many countries (Paulo et al 2010;Sandberg, Ejsmont 2002). The paper (Descornet, Goubert 2006) presents classification of road pavements in respect of noisiness elaborated in 17 countries.…”

Section: Pavement Noisiness -General Remarksmentioning

confidence: 99%

Influence of road pavement macrotexture on tyre/road noise of vehicles

Gardziejczyk

2014

The Baltic Journal of Road and Bridge Engineering

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Noise level in the surroundings of traffic routes mainly depends from traffic volume, flow composition, speed of the vehicles as well as from the cross-section and road longitudinal gradient. Under higher speeds significant influence on the noise level has also tyre/road noise. Tyre/road noise depends on type and pavement condition state, specifically from the surface macrotexture. The influence of macrotexture is varying and strictly connected with the type of vehicles, tyres characteristics, frequencies of emitted noise. On the base of investigations of the rolling noise applying Statistical Pass-By method along the Polish roads the paper presents elaborated dependences and fixed values of differences between maximum noise levels under passing multiple-axle heavy vehicle and passenger car on the asphalt concrete surface, stone mastic asphalt and the surface dressing. The functional dependences between maximum rolling noise levels in the range of complete level and in the octave band spectra: 250 Hz, 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz and between the surface macrotexture described by mean profile depth, and logarithm of vehicle speed and adequate nomograms were evaluated in the paper. On this base the values of differences in the levels of emitted noise from passing heavy vehicle and passenger car in function of speed and surface macrotexture were computed. The manuscript also presents how surface macrotexture and traffic flow composition have influence on equivalent noise level in the road vicinity under equal traffic volume.

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Statistical classification of road pavements using near field vehicle rolling noise measurements

Cited by 15 publications

References 7 publications

Durability and variability of the acoustical performance of rubberized road surfaces

Durability and variability of the acoustical performance of rubberized road surfaces

Dynamic Tire Pressure Sensor for Measuring Ground Vibration

Influence of road pavement macrotexture on tyre/road noise of vehicles

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