This series of fish scales shows the many variations in morphology between fish species. The Dusky Smooth-Hound is a shark, meaning it has tiny scales (called placoid scales or denticles). These features have complex, 3D shapes and create a surface made of their crowns which protrude above the skin. The crowns often have posterior points … Read more
This series of fish scales shows the many variations in morphology between fish species. The Black Nox Angelfish is a tropical coral reef fish that has large scales with very long spines that point posteriorly, giving the surface a ridged appearance. This fish even has these scales on parts of their fins, such as the … Read more
This series of fish scales shows the many variations in morphology between fish species. The American Shad is native to North America and migrates from salt to freshwater to breed in the spring. This species has large crenate scales, where the scale extends into weak protrusions (not quite spines) along its posterior edge. For this … Read more
This dataset is featured in our article, Analyzing additive surfaces with directional filtering. The small particles of partially-melted power are challenging to quantify. The striped pattern created by the additive manufacturing process makes the particles difficult to isolate. Directional filters—a standard feature of OmniSurf3D software—make it possible to suppress the ridges while retaining the features … Read more
In applications such as high performance diesel and some racing engines, an even more extremely plateaued surface is required. In these cases, the plateaued texture described above is pushed to more extreme limits. The valley texture is created by an even rougher honing process, creating deeper valleys that are spaced farther apart. The plateaus are … Read more
Conventionally honed, “single-process honed,” or “peak honed” surface texture is generally comprised of a crosshatched surface with fairly random peaks and valleys. For a perfectly random surface, the height of the peaks is similar to the depth of the valleys. In single-process honing we often find that the peaks heights are slightly smaller than the … Read more