Application of LADAR in the Analysis of Aggregate Characteristics (2012) / Chapter Skim
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13 3.1 Shape In the paving industry, shape is usually described by sphericity, flatness ratio, and elongation ratio. The FTI system implemented the characterization of these terms following Eq.
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14 Angularity factor (AF) and texture factor (TF)
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15 difference between the original surface and the reconstructed surface is less than 0.2 mm; therefore, frequency f3 is the critical frequency for this original surface shown in the first column. The relationship between the AF and the corresponding area of the roughness matrix is plotted in Figure 3-3 for some aggregate particles retaining on ½-in.
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16 data of aggregate surface point coordinates are read to the computer's memory. The data format is as follows: 99 101 9999 -0.1571 0.2500 5.0000 -0.3140 0.5000 5.0000 -0.4705 0.7500 5.0000 -0.6267 1.0000 5.0000 -0.7822 1.2500 5.0000 .
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17 where Si is the area of the ith triangle, S is total surface area, n is the number of triangles, and (xi1, yi1)
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18 orthogonal to each other. The first maximum dimension is the longest one of the aggregate.
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19 shown in Figure 3-10 are slices perpendicular to the longest dimension. We measure all the distances between the points intersecting the plane and the surface of the particle and get the longest one.
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