Crack and dimension inspection of bricks and roof tiles
Roof tiles from the kiln exit are imaged in a single file on the belt. Low-angle light reveals crack shadows; laser profiling then measures warpage and thickness, and a non-conforming tile is removed by a pusher.
Crack location and profile deviation appear on the operator display; line control tracks the non-conforming tile position and sends a reject command to the pusher.
- 01 Infeed
- 02 Acquire
- 03 Analyse
- 04 Decide
Tiles arrive in a single file from the kiln-car unloading belt.
- Crack length
- —
- Profile deviation
- —
Scenes are illustrative simulations; they are not customer references or performance guarantees.
Need
The rough fired-clay surface and corrugations produce dark lines resembling cracks. Surface angle changes on a warped tile; a top image alone does not show thickness deviation.
Solution approach
An overhead camera images the surface using two opposing low-angle bar lights; thin shadow lines departing from the corrugation direction are measured as crack candidates. The next 3D sensor profile is compared with nominal corrugation shape to assess warpage and dimensional deviation.
Process steps
- 01
Infeed
Tiles arrive in a single file from the kiln-car unloading belt.
- 02
Acquire
The overhead camera acquires the crack image; the next sensor extracts a laser profile.
- 03
Analyse
The crack line and profile deviation from nominal shape are measured.
- 04
Decide
A cracked or warped tile is pushed into the reject bin.
Related applications
Let us assess your application together
We test your sample in our laboratory and report on resolution, optics and lighting selection.