Koç University 3D Prints Sensor-Embedded Repairs for Ancient Amphorae

Conservators usually fix broken ancient pottery with plaster. That works, but it does not tell you anything about how the artifact is faring after the repair. Engineers and archaeologists at Koç University in Istanbul have developed a different approach: 3D printed replacement pieces with sensors built in that monitor temperature, humidity, pH, and physical stress from inside the repair itself.

The process starts with photogrammetry. Researchers take hundreds of overlapping photographs of a damaged amphora and stitch them into a full 3D model. They digitally reconstruct the missing section, then print a custom replacement using additive manufacturing. The sensor is embedded directly into the printed piece during production, not bolted on afterward.

Why It Matters

Ceramic artifacts are fragile in ways that are not always obvious. Salt migration driven by humidity changes can cause microfractures over time. Temperature swings create physical stress. Traditional repairs hide these problems. The Koç University method puts a sensor right at the damage site, so conservators get data specific to that vessel rather than general room readings from a display-case sensor.

The team tested the method on two collections. One group of amphorae came from the Günsenin IV shipwreck recovered off the coast of Türkiye and is on display at the Bandırma Archaeology Museum. The other is a mixed collection from the Amalfi coast held at the Minori Villa Romana e Antiquarium in Italy.

What the Data Shows

Initial readings at both sites showed the embedded sensors recorded daily temperature and humidity fluctuations along with force patterns from the stress sensor. The values were consistent with what conservators expected from those storage environments, which suggests the method is accurate enough for long-term monitoring.

Photogrammetry paired with 3D printing is already common in heritage conservation for making replacement parts. What makes this approach different is the sensor integration inside the print itself. If the methodology holds up at scale, it could change how museums handle ceramic restoration: no more guessing whether a plaster patch is hiding ongoing damage.