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Inferring Pavement Propertiesusing an EmbeddedAccelerometer

International Journal of Transportation Science and Technology 2012年第3期1卷 229-246页

作者： eyal levenberg Technion-Israel Institute of Technology Technion CityHaifa 32000Israel

A high-end single-axis inertial sensor,capable of detecting minute accelerations,was embeddedin an asphalt pavement *** of known dimensions and overall weight was drivenalong a straight line,passing near the sensor’s embedment location at constant *** were analyzed as means to infer the pavement layer *** this purpose,instead of double integrating the accelerometer data to arrive at deflections,the rawmeasurements were first smoothed and then matched against computed *** and weight distribution between front and rear axles were also *** paperdescribes the experimental details,analysis method,and results.

关键词： acceleration integrating details

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Determination of Bulk Volume of Asphalt Specimens with Image-based Modeling

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International Journal of Transportation Science and Technology 2013年第1期2卷 1-13页

作者： eyal levenberg Alex Manevich Technion-Israel Institute of Technology Technion CityHaifa 32000Israel

An approach is explored for modernizing the determination of bulk density of compacted asphalt *** is based on calculating the bulk volume of the specimen in a three-dimensional model reconstructed from its *** paper presents the basics of image-based modeling,founded upon the science of photogrammetry and computer ***,a demonstrative application is described,in which a field core is photographed from many viewpoints with a consumer grade camera,and the images are combined into a sparse point *** cloud is subsequently‘meshed’with planar polygons into a closed 3D shape and its volume *** was found that the model-core volume was very close to that measured with a traditional liquid-displacement *** was also found that while the volume was relatively insensitive to the quantity and quality of the images used for the reconstruction,the computational time varied significantly from minutes to *** on the favorable findings of this limited application,the approach is deemed promising and viable,worthy of more in-depth examination.

关键词： polygon viable planar

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