The following overview is excerpted from: Ketcham, R.A. (2005b) Three-dimensional grain fabric measurements using high-resolution X-ray computed tomography. Journal of Structural Geology, 27, 1217-1228 and Ketcham, R.A., and Ryan, T. (2004) Quantification and visualization of anisotropy in trabecular bone. Journal of Microscopy, 213, 158-171.

Quant3D is a versatile program that can be used to analyze fabrics in any three-dimensional data set; examples include quantification of anisotropy in trabecular bone (Ketcham and Ryan, 2004; Ryan and Ketcham, 2005) and textural analysis of metamorphic rocks (Ketcham, 2005b). Fabric tensors are produced based on the star volume distribution (SVD), star length distribution (SLD), and mean intercept length (MIL) methods. Principal component directions and magnitudes are provided by the tensors, providing the degree of anisotropy and shape indices of the phase of interest. Three-dimensional rose diagrams are a unique feature implemented in Quant3D for analyzing non-orthogonal directional fabric components; they are VRML-format graphics files that can be rotated and viewed interactively.

Click here to download Quant3D via ftp.


Example of fabric analysis of quartzofeldspathic layers using Quant3D. In (a) the scan data are first segmented to isolate the material of interest, in this case garnet (white), biotite + kyanite (gray), and quartz + feldspar (black). ‘Star’ analyses proceed by placing a series of points within the material of interest, and measuring the distance from each point to the material boundary in many directions (red lines). Only two dimensions shown here, but measurements are actually made in 3D. The analysis directions are uniformly distributed in three dimensions on a grid defined by the line intersections on the sphere shown in (b). To create a 3D rose diagram, each intersection in (b) is projected from the origin by its relative star volume component value (c). Colors are assigned based on SVD/Max(SVD), and color coding from 0 (violet) to 1 (red) (from Ketcham, 2005b).


3D rose diagrams showing relative SVD component magnitudes for quartz + plagioclase (upper row) and garnet (lower row) in sample MD generated in Quant3D. First diagram in each row (a,d) is viewed down the ‘Up’ axis; second diagram (b,c) is viewed along the second eigenvector, and third (c,f) is an arbitrary orientation. The diagrams are stored in VRML 97 format, and can be viewed interactively with a number of software applications and browser plug-ins (from Ketcham, 2005b).


 Papers Utilizing Quant3D

Acquaah, F., Brown, K.A.R., Ahmed, F., Jeffery, N., and Abel, R.L. (2015) Early trabecular development in human vertebrae: overproduction, constructive regression, and refinement. Frontiers in Endocrinology, 6, 67.
Bernasconi, A., and Cosmi, F.
 Analisi sperimentale dell’anisotropia in prossimità di intagli in materie plastiche rinforzate con fibre corte. XXXVII Convegno Nazionale, Università di Roma, Italy, 10 p.
Bernasconi, A., and Cosmi, F. (2011) Analysis of the dependence of the tensile behavior of a short fibre reinforced polyamide upon fibre volume fraction, length and orientation. Procedia Engineering, 10, 2129-2134.
Bernasconi, A., Cosmi, F., and Dreossi, D. (2008) Local anisotropy analysis of injection moulded fibre reinforced polymer composites. Composites Science and Technology, 68, 2574-2581.
Bernasconi, A., Cosmi, F., and Dreossi, D. (2008) Analisi dell’anisotropia microstrutturale in materiali compositi rinforzati con fibre corte. Frattura ed Integrità Strutturale, 3, 18-29.
Bernasconi, A., Broznic, M., Cosmi, F., Dreossi, D., and Tromba, G. (2007) Resistenza e anisotropia in compositi rinforzati con fibre corte: analisi mediante tomografia con luce di sincrotrone. Atti del Congresso IGF 19, Milan, Italy, 8 p.
Bernasconi, A., Cosmi, F., and Zappa, E. (2010) Combined effect of notches and fibre orientation on fatigue behavior of short fiber reinforced polyamide. Strain, 46, 435-445.
Bhasin, A., Izadi, A., and Bedgaker, S. (2010) Three dimensional distribution of the mastic in asphalt composites. Construction and Building Materials, 25, 4079-4087.
Bishop, P.J., Walmsley, C.W., Phillips, M.J., Quayle, M.R., Boisvert, C.A., and McHenry, C.R. (2015) Oldest Pathology in a Tetrapod Bone Illuminates the Origin of Terrestrial Vertebrates. PloS one, 10:5.
Chatzaras, V., Kruckenberg, S.C., Cohen, S.M., Medaris, L.G., Withers, A.C., and Bagley, B. (2016) Axial-type olivine crystallographic preferred orientations: The effect of strain geometry on mantle texture. Journal of Geophysical Research: Solid Earth, 121, 4895-4922.
Cosmi, F., and Bernasconi, A. (2010) Elasticity of short fibre reinforced polyamide: morphological and numerical analysis of fibre orientation effects. Materials Engineering, 17, 6-10.
Cosmi, F., and Ravalico, C. (2015) Threshold identification for micro-tomographic damage characterisation in a short-fibre-reinforced polymer. Strain, 51, 171-179.
Cosmi, F., Scozzese, S., and Bernasconi, A. (2010) Studio del danneggiamento mediante tomografia in luce del sincrotrone: impatto di un cono d’ombra sulla qualitá finale delle ricostruzioni. Frattura ed Integritá Strutturale, 13, 17-23.
Cosmi, F., Bernasconi, A., and Sodini, N. (2011) Phase contrast micro-tomography and morphological analysis of a chort carbon fibre reinforced polyamide. Composites Science and Technology, 71, 23-30.
Cosmi, F., Steimberg, N., and Mazzoleni, G. (2015) A mesoscale study of the degradation of bone stuctural properties in modeled microgravity conditions. Journal of the Mechanical Behavior of Biomedical Materials, 44, 61-70.
Cotter, M.M., Loomis, D.A., Simpson, S.W., Latimer, B., and Hernandez, C.J. (2011) Human evolution and osteoporosis-related spinal fractures. PLoS ONE, 6(10), e26658.
Dal Ferro, N., Delmas, P., Duwig, C., Simonetti, G., and Morari, F. (2012) Coupling X-ray microtomography and mercury intrusion porosimetry to quantify aggregate structures of a cambisol under different fertilisation treatments. Soil and Tillage Research, 119, 13-21.
Dyess, J. E., Hansen, V. L., Goscinak, C. (2015) Constrains on vorticity and non-coaxial shear direction in Neoarchean L-S tectonites, an example from northern Minnesota, USA. Precambrian Research, 256, 189-200.
Fu, Y., Xie, H., Deng, B., Du, G., Chen, R., Xiao, T. (2014) Three-dimensional structure of polystyrene colloidal crystal by synchrotron radiation X-ray phase-contrast computed tomography. Materials Science & Processing, 115, 781-790.
Gosman, J.H., and Ketcham, R.A. (2009) Patterns in ontogeny of human trabecular bone from SunWatch Village in the prehistoric Ohio Valley: general features of microarchitectural change. American Journal of Physical Anthropology, 138, 318-332.
Griffin, N.L. (2008) Bone architecture of the hominin second proximal pedal phalanx: a preliminary investigation. Journal of Human Evolution, 54, 162-168.
Griffin, N.L., D’Août, K., Ryan, T.M., Richmond, B.G., Ketcham, R.A., Postnov, A. (2010) Comparative forefoot trabecular bone architecture in extant hominids. Journal of Human Evolution, 59, 202-213.
Hill, C.A. (2011) Ontogenetic change in temporal bone pneumatization in humans. The Anatomical Record, 294, 1103-1115.
Hill, C.A., and Richtsmeier, J.T. (2008) A quantitative method for the evaluation of three-dimensional structure of temporal bone pneumatization. Journal of Human Evolution, 55, 682-690.
Ketcham, R.A. (2005b) Three-dimensional textural measurements using high-resolution X-ray computed tomography. Journal of Structural Geology, 27, 1217-1228.
Ketcham, R.A., and Ryan, T. (2004) Quantification and visualization of anisotropy in trabecular bone. Journal of Microscopy, 213, 158-171.
Maga, M., Kappelman, J., Ryan, T.M., and Ketcham, R.A. (2006) Preliminary observations on the calcaneal trabecular microarchitecture of extant large-bodied hominoids. American Journal of Physical Anthropology, 129, 410-417.
Matarazzo, S.A. (2015) Trabecular architecture of the manual elements reflects locomotor patterns in primates. PLoS ONE, 10(3), e0120436.
Raichlen, D.A., Gordon, A.D., Foster, A.D., Webber, J.T., Sukhdeo, S.M., Scott, R.S., Gosman, J.H., and Ryan, T.M. (2015) An ontogenetic framework linking locomotion and trabecular bone architecture with applications for reconstructing hominin life history. Journal of Human Evolution, 81, 1-12.
Ravilico, C., and Francesca, C. (2015) Evaluation of fibre length distribution in a short glass fibre reinforced PA-6. Materiálové Inzinierstvo, 22.3, 140-147.
Ryan, T.M., Colbert, M., Ketcham, R.A., and Vinyard, C.J. (2009) Trabecular bone structure in the mandibular condyles of gouging and nongouging platyrrhine primates. American Journal of Physical Anthropology, 141, 583-593.
Ryan, T.M., and Ketcham, R.A. (2005) Angular orientation of trabecular bone in the femoral head and its relationship to hip joint loads in leaping primates. Journal of Morphology, 265, 249-263.
Ryan, T.M., and Walker, A. (2010) Trabecular bone structure in the humeral and femoral heads of anthropoid primates. The Anatomical Record, 293, 719-729.
Russo, G.A. (2016) Comparative sacral morphology and the reconstructed tail lengths of five extinct primates: Proconsul heseloni, Epipliopithecus vindobonensis, Archaeolemur edwardsi, Megalapadis grandidieri, and Palaeopropithecus kelyus. Journal of Human Evolution, 90, 135-162.
Schöpa, A., Floess, D., de Saint Blanquat, M., Annen, C., Launeau, P. (2015) The relation between magnetite and silicate fabric in granitoids of the Adamello Batholith. Tectonophysics, 642, 1-15.
Skedros, J.G., Knight, A.N., Farnsworth, R.W., and Bloebaum, R.D. (2012) Do regional modifications in tissue mineral content and microscopic mineralization heterogeneity adapt trabecular bone tracts for habitual bending? Analysis in the context of trabecular architecture of deer calcanei. Journal of Anatomy, 220, 242-255.
Srivastava, P.K., Chandel, C., Mahajan, P., and Pankaj, P. (2016) Prediction of anisotropic elastic properties of snow from its microstructure. Cold Regions Science and Technology, 125, 85-100.
Wang, Q., Smith, A.L., Strait, D.S., Wright, B.W., Richmond, B.G., Grosse, I.R., Byron, C.D., and Zapata, U. (2010) The global impact of sutures assessed in a finite element model of a macaque cranium. The Anatomical Record, 293, 1477-1491.
Yu, X.-L., Fu, Y.-N., Brookes, P.C., and Lu, S.-G. (2015) Insights into the formation process and environmental fingerprints of iron-manganese nodules in subtropical soils of China. Soil Science Society of America Journal, 79, 1101-1114.
Zeininger, A., Patel, B.A., Zipfel, B., and Carlson, K.J. (2016) Trabecular architecture in the StW 352 fossil hominin calcaneus. Journal of Human Evolution, 97, 145-158.