Non-Destructive for the First Time with THz Radiation

Dr. Andreas STEIGER1, Dr. Nico Vieweg2, Ms. Nadja Regner2, Ms. Katja Dutzi2, Mr. Janis Kutz2, Ms. Cigdem Kaya3, Dr. Thomas Stegmaier3
1PTB, Berlin, Germany. 2TOPTICA Photonis AG, Gräfelfing, Germany. 3DITF, Denkendorf, Germany


A new method for quality control of the coating of textile fabrics using THz radiation enables non-destructive measurements of the coating thickness immediately after the liquid applied coating has dried. In contrast, current standards for determining the coating thickness of textiles all involve destructive testing, i.e. they stipulate that samples of a defined size must be cut out of a coated textile.