The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Feb. 20, 2014
Areva Gmbh, Erlangen, DE;
Iris Altpeter, Saarbrücken, DE;
Ralf Tschuncky, Saarbrücken, DE;
Hans-Georg Herrmann, Saarbrücken, DE;
Jochen Kurz, Saarbrücken, DE;
Gerd Dobmann, Dudweiler, DE;
Gerhard Hübschen, Saarlouis, DE;
Steffen Bergholz, Erlangen, DE;
Jürgen Rudolph, Erlangen, DE;
AREVA GMBH, Erlangen, DE;
Abstract
The present invention relates to a method for detecting temporally varying thermomechanical stresses and/or stress gradients over the wall thickness of metal bodies, in particular pipelines. In the method, the temperature on the outer surface of the body is measured in order to determine a temperature progression and stress progression therefrom. In addition, electromagnetic ultrasonic transducers are used at at least one measuring point on the outer surface in order to determine the progression of the stresses and/or stress gradients over time over the wall thickness of the body in conjunction with the result of the temperature measurement. The method allows the fatigue monitoring of pipelines even in the event of rapid stress changes.