All applications

Application

Multilayer analysis

Resolve every layer thickness inside a coating stack from a single non-destructive measurement, without cross-sectioning.

The challenge

Total thickness hides which layer drifted

When a coating system is built from multiple layers, total thickness does not tell you which layer is drifting, which is missing, or whether the build matches the intended design. Cross-sectioning gives the answer but destroys the sample, and most non-destructive tools collapse the stack into a single number.

Drawing: a three-coat system on steel, topcoat 75 µm, intermediate 125 µm and primer 60 µm, 260 µm in total.

Every layer, from one non-destructive measurement

Chameleon resolves the individual layer thicknesses inside a multilayer stack from a single non-destructive measurement. You can review whether each layer matches design intent, whether the stack sequence is correct, and whether one specific layer accounts for the variation seen in total build.

Each interface in the stack returns its own reflection, which is what separates per-layer values from the single total a contact gauge reports. That mechanism is set out in how terahertz thickness measurement works, and the trade-offs against contact and acoustic methods in terahertz versus ultrasound thickness measurement. Where only the outer boundary matters, single-layer thickness measurement covers it, and the acquisition workflow is described on the Chameleon product page.

What it changes in practice

Per-layer values

Individual layer thicknesses from the same measurement.

Stack integrity

Layer order and presence verified without sectioning.

2D extension

The same method extends into area-based layer mapping.

Per-layer thickness retrieved from a single measurement

In multilayer maritime coating work, Chameleon retrieved the accumulated thickness alongside each individual layer thickness from a single measurement position. The same approach extends into mapped acquisition when broader area review is needed.