Results 311 to 320 of about 19,396 (328)

Influence of Pavement Roughness on Tire Noise

Noise Control and Acoustics, 1999
Abstract In this study, the influence of the levels of pavement roughness on tire noise is examined using Nearfield Acoustical Holography (NAH) to measure noise from single tires mounted on a two-wheel trailer towed over different types of pavements.
Richard J. Ruhala, Courtney B. Burroughs
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Pavement Roughness Evaluation for Urban Road Management

ICTE 2013, 2013
The road authority targets good ride quality in its pavement management. The International Roughness Index (IRI) is the most common way to describe road roughness, which is defined by means of quarter car model. For urban road with short section, complex traffic conditions, IRI calculated by a one-way vertical section is inappropriate to evaluate the ...
Hui Wang, Zhang Chen, Lijun Sun
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Pavement Roughness Indices Related to Riding Comfort

Applied Mechanics and Materials, 2014
The most widely used pavement roughness index is the international roughness index (IRI), but it is a poor predictor of ride comfort. In addition, the rider has not yet been included in the vehicle model used to evaluate pavement roughness. In this paper, in order to evaluate the comfort of the rider directly and consider the effects on ride comfort of
Zong Tao Zhang, Quan Man Zhao, Wan Qiao Yang   +2 more
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Spatial pavement roughness from stationary laser scanning

International Journal of Pavement Engineering, 2015
AbstractPavement roughness is a key parameter for controlling pavement construction processes and for assessing ride quality during the life of a pavement system. This paper describes algorithms used in processing three-dimensional (3D) stationary terrestrial laser scanning (STLS) point clouds to obtain surface maps of point wise indices that ...
Ahmad Alhasan, David J. White, Kris De Brabanter   +2 more
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Modeling incremental pavement roughness using functional network

Canadian Journal of Civil Engineering, 2005
Incremental roughness prediction is a critical component of decision making of any pavement management systems, therefore, proper estimation is of paramount importance. This paper presents the application of functional equations and networks to incremental roughness prediction of flexible pavement.
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Wavelet Filter Design for Pavement Roughness Analysis

Computer-Aided Civil and Infrastructure Engineering, 2016
AbstractControl and characterization of pavement roughness is a major quality assurance requirement. With emerging technologies in real‐time monitoring and increasingly stringent requirements to minimize localized roughness features, there is an opportunity to improve upon the traditional quarter‐car (QC) algorithm used to qualify roughness.
Ahmad Alhasan, David J. White, Kris De Brabanter   +2 more
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Rough Set Theory in Pavement Maintenance Decision

2009
The decision tree models based on pavement experts' experiences are usually used to derive pavement maintenance decisions. Because experiences are very difficult to obtain completely, some importance condition attributes in decision tree model are easily to be lost.
Ching-Tsung Hung, Jia-Ruey Chang, Jyh-Dong Lin, Gwo-Hshiung Tzeng   +3 more
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Verification of Network-Level Pavement Roughness Measurements

Transportation Research Record: Journal of the Transportation Research Board, 2001
In 1997 the Ministry of Transportation of Ontario (MTO), Ontario, Canada, switched to international roughness index (IRI) measurements as an indicator of network-level pavement roughness within its pavement management system. Measurement of pavement roughness or ride quality in terms of IRI can be performed with different measuring devices.
Li Ningyuan, Thomas Kazmierowski, Brij Sharma   +2 more
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Roughness-induced pavement-vehicle interaction

The greenhouse gas (GHG) emission due to the road transportation has increased significantly since 1990. The total emissions from road transportation originates from the following phases: material production, construction, maintenance, use and demolition phases of the pavement.
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Flexible pavement surface roughness criteria

2008
Jedan od osnovnih zahtjeva koji korisnici, osobe koje prometuju nekom cestovnom prometnicom postavljaju na nju, je što viša razina ravnosti. Stoga, Investitor, društvo za upravljanje, građenje i održavanje cestovnih prometnica ima imperativ zadovoljavanja kriterija koji se odnose na ovu karakteristiku.
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