PDS – the world’s first plastic deformation sensor enables the identification of the plasticization moment

We often hear the question: “Is my structure safe?”

But how can we answer this based only on strain increments without knowing:

• material characteristics
• initial strain-stress state
• and through protective layers

Thanks to our R&D, we’ve developed a solution capable of signaling upcoming yielding or near-to-failure state. Our Plastic Deformation Sensor PDS works like a safety fuse on steel, concrete or composite surfaces. This world-unique monitoring solution is based on a specialised configuration of strain sensors and advanced alghoritms.

The PDS is designed not only for various materials, but also for different measurement technologies, including:

• DFOS (distributed fibre optic sensing)
• FBG
• foil strain gauges
• vibrating wire strain gauges

Plastic Deformation Sensor (PDS) is a unique solution, that allows the unambiguous identification of the plasticisation moment of the monitored material, without the need to know its characteristics (in particular the sigma-epsilon curve), its initial stress state and its current technical condition.

The measurements cover selected areas of the structure that are safety-critical due to the risk of stress extremes. Measurements are taken automatically at a pre-set frequency over time and an early warning system alerts about any irregularities.

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