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Layer Depth

Layer Depth (also referred to as Layer Thickness) is the dry-film thickness of one individual layer within a multi-layer coating system, in micrometres (µm), as resolved by the Boring Thickness Module.

Definition

In a Säberg-drilled crater imaged by Aesthetix, each layer interface appears as a circular ring. Layer Depth is the thickness of the coating material between two adjacent rings, calculated as:

Layer Depth [µm] = | r_outer − r_inner | × tan(Drill Angle) × mm/pixel × 1000

with r_outer and r_inner the radii of the two rings bounding the layer in image pixels, Drill Angle the cone angle of the drill bit, and mm/pixel the calibrated pixel scale of the Aesthetix Aspec camera.

Layer Numbering

Layers are numbered from the outside in of the crater, which corresponds to the top down of the original coating stack:

Layer 1 Depth — outermost (top) layer, typically the topcoat / clearcoat
Layer 2 Depth — next layer down, typically the basecoat
Layer 3 Depth — next layer down, typically the primer
Layer 4–5 Depth — additional sub-layers if present

With N detected rings the module produces N − 1 layer depths. The data table stores up to five layers (Layer 1 Depth … Layer 5 Depth).

Units

Always reported in micrometres (µm), formatted with two decimal places.

In Appearance Elements

Columns: Layer 1 Depth, Layer 2 Depth, Layer 3 Depth, Layer 4 Depth, Layer 5 Depth in the Boring Thickness data table
Detail view: A per-layer thickness data grid is shown in the expanded result panel of any Boring Thickness measurement.