Acreo Swedish Ict Ab

Rocan System Ab

Alfa Laval Corporate Ab

Jakob Blomgren

Klas Bertilsson

Anders Nyander

Anatol Krozer

Christer Johansson

Christian Jonasson

Rolf Carlsson

Fredrik Ahrentorp

Karolina Petersson

Dag Ilver

Andrea Prieto Astalan

Andrea Prieto-Astalan

Karolina Pettersson

A device and method for indicating if a fastening element upon fastening to a piece has reached a tensile yield limit load. The fastening element includes a threaded shaft having a magnetostrictive material. The device includes a mechanism for generating an alternating magnetic field that penetrates the shaft, a mechanism for measuring a physical quantity that depends on the momentary magnetic susceptibility of the shaft and a control unit adapted to detect a significant change of the physical quantity and determine and indicate if the shaft of the fastening element has reached the tensile yield limit load.

Device and method for indicating if a fastening element has reached a tensile yield limit load

A device for detecting a magnetic field response or changes in a magnetic response of at least one magnetic particle in a carrier fluid, the detection comprising measuring the magnetic particles characteristic rotation period, and the measurement involving measurement of a Brownian relaxation in the carrier fluid under influence of an external pulsed magnetic field. The device includes means for generating the pulsed magnetic field, at least two substantially identical detection coils connected in gradiometer coupling to detection electronics for measuring the differential induced voltage which is dependent on the frequency dependent susceptibility or the magnetization change.

Method and arrangement relating to analyses of a substance

Growing community of inventors

Gothenburg, Sweden

Jakob Blomgren