Sikora Ag

Kolja Tobias Schuh

Harald Sikora

Armin Holle

Hilmar Bolte

Sebastian Miesner

A method is provided for detecting a defect of a strand-like product conveyed in a conveying direction at a conveying speed of more than 50 m/min. The method includes determining a frequency of a lateral movement of the strand-like product. The lateral movement occurs in a direction that is transverse to the conveying direction. Terahertz radiation is emitted at a wavelength by at least one transmitter onto the strand-like product conveyed in the conveying direction. The terahertz radiation is reflected by the strand-like product and received by at least one receiver. A temporary change in the terahertz radiation received by the at least one receiver is detected. A defect in the strand-like product is inferred when the temporary change in the terahertz radiation received by the at least one receiver is higher than the frequency of the lateral movement of the strand-like product.

Method and device for detecting defects of a strand-like product

A method is disclosed for determining at least one geometric parameter of an object comprising a molten component. The method includes determining a relationship between a refractive index of the object and a shrinkage occurring during a solidification of the object. The refractive index and at least one geometric parameter of the object comprising the molten component is determined using a measuring apparatus. At least one geometric parameter of the solidified object from the refractive index and the at least one geometric parameter of the object comprising the molten component is determined using the measuring apparatus and taking into account the determined relationship between the refractive index of the object and the shrinkage occurring during the solidification of the object.

Growing community of inventors

Bremen, Germany

Kolja Tobias Schuh