Patents by Inventor Luigi Merletti

Luigi Merletti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for determining stress of a component made of magnetizable material
    Patent number: 9488537
    Abstract: The present system determines a significant stress value (?) of a component made of magnetizable material. The system has a generating stage for generating a magnetic field of varying amplitude (H); and also includes a pickup stage for acquiring a Barkhausen noise signal (MBN) alongside variations in the amplitude (H) of the magnetic field. The system is characterized by having a processing unit for calculating the reciprocal (1/MBNmax) of the maximum value (MBNmax) of the signal (MBN), alongside variations in the amplitude (H) of the magnetic field. The processing unit has a memory stage storing a linear relation between the reciprocal (1/MBNmax) of the maximum value and the significant stress value (?).
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: November 8, 2016
    Assignee: AGUSTA WESTLAND S.P.A.
    Inventors: David C. Jiles, Lukasz Mierczak, Luigi Merletti, Gabriele Fantoni
  • SYSTEM AND METHOD FOR DETERMINING STRESS OF A COMPONENT MADE OF MAGNETIZABLE MATERIAL
    Publication number: 20130116938
    Abstract: The present system determines a significant stress value (?) of a component made of magnetizable material. The system has a generating stage for generating a magnetic field of varying amplitude (H); and also includes a pickup stage for acquiring a Barkhausen noise signal (MBN) alongside variations in the amplitude (H) of the magnetic field. The system is characterized by having a processing unit for calculating the reciprocal (1/MBNmax) of the maximum value (MBNmax) of the signal (MBN), alongside variations in the amplitude (H) of the magnetic field. The processing unit has a memory stage storing a linear relation between the reciprocal (1/MBNmax) of the maximum value and the significant stress value (?).
    Type: Application
    Filed: May 23, 2011
    Publication date: May 9, 2013
    Applicant: Agustawestland S.p.A
    Inventors: Luigi Merletti, Gabriele Fantoni, Lukasz Mierczak, David C. Jiles