An accurate measurement of the multi-layer thickness of a component is crucial to maintain consistent quality and minimize defects and material wastage. A terahertz-based solution checks for coating thickness, density, and moisture contact of a sample, while also measuring the basis weight, caliper thickness, and controlling the extrusion of a multi-layer plastic, all in a single pass with micron-level accuracy. Considering its importance, material manufacturers require a non-destructive terahertz radiation solution to process and deliver real-time measurements of the thickness of coatings, materials and layers to avoid standard industry challenges.

Terahertz technology by Luna Innovations provides the best in class solution in the non-destructive measurement testing arena with added benefits such as contactless multi-layer measurement, high-resolution images, and accurate measuring results. In addition, this solution can be used on opaque and translucent materials alike with no harmful side effects to the user.

The terahertz radiation utilized in the solution falls between the microwave and the infrared regions in the electromagnetic spectrum. Its frequencies range from 0.1-10Thz, and wavelengths range from 3mm to 0.03mm. This high-intensity radiation can gauge and produce a high temporal resolution of the materials accurate to 1 micrometer while also producing amplitude information in a short period.

When coupled with a line scanner gauge, The T-Ray® 5000, Luna’s solution can produce B-scan images of defects, subsurface structures, and separation measurements. Furthermore, the T-Ray 5000 is appropriate for industrial and scientific applications. Additionally, it monitors and controls all aspects of the emissions, including generation and detection to deliver optical signals to terahertz transmitters and receivers.

The high-tech device comes in a convenient design. The handy size does not sacrifice efficiency as the device can measure and scan even the distinct coatings, checking for thickness inconsistencies and locating even the minute subsurface anomalies using a single sensor.

Terahertz solutions have a wide range of utilities across the industries; they are used to inspect high-performance coatings on military aircraft, verifying coatings for thickness in submicron level accuracy. The solution can also be used for in-service inspections and repairs of external coatings.

The aerospace industry uses this solution to identify defects on the surface and adjust panel alignment, while marine-based industries use terahertz to check for the wear and tear caused by corrosion under the paint. The building product industry uses terahertz technology for seam inspection and void detection. In contrast, the Petrochemical industry applies the solution to check the thickness of the coated steel pipes and inspect pipes that require repairs.

The Terahertz solution demonstrated its excellence when it was summoned to examine The Last supper by Leonardo Da Vinci. Luna Inc worked together with the Museo Del Cenacolo Vinciano in Milan, Italy, to use the Terahertz technology to examine one of the most renowned murals in the world. The investigation provided valuable information in spotting loose layers, degradations, and de-laminations which can be crucial in the treatment, preservation, and storage to slow the deterioration of the five-hundred and twenty-seven years old mural. Furthermore, the investigations revealed anomalies and differences in the structure of the Mural, a result of earlier restoration. They gave insights into the restorations that might have occurred hundreds of years ago.

With an easily accessible design and an exceptional safety standard, Terahertz technology is a comprehensive solution that caters to the various requirements across multiple industries while also helping them maintain consistency and minimizing the defect and material wastage factors.