The researchers believe that the technique they’ve developed could be applied to test critical structures such as silos or subterranean reservoirs used for disposing of nuclear waste. Early detection of potential flaws could help authorities initiate public safety measures.
The system is based on an electric measuring system deployed in a coat of paint and which rapidly detects cracks and other weaknesses in concrete surfaces. The special electrically conductive paint can be applied to old or new structures.
“The technique makes it possible to develop an early warning system that would flag any damage, almost in real time. This system is relatively easy to implement. That’s why we believe in its potential for exploitation,” said academic researcher Aku Seppänen of the Applied Sciences Department of the University of Eastern Finland.
The procedure was developed at the Finnish university in collaboration with North Carolina State University. The goal of the so-called “Sensing skin” research was to develop technology to help with early detection of damage or weakness in critical concrete structures such as nuclear facilities or major infrastructural sites such as bridges.
The researchers have demonstrated the effectiveness of the technique on a small scale, using concrete beams less than one metre wide. According to researcher Seppänen more tests are planned for next year.