Patents by Inventor Ewa Drescher-Krasicka

Ewa Drescher-Krasicka 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).

  • Method and apparatus for visualization of internal stresses in solid non-transparent materials by ultrasonic techniques and ultrasonic computer tomography of stress
    Patent number: 5549003
    Abstract: A process and apparatus for visualization of internal stresses in solid mrials by an acoustic microscope (10) connected to an (5) having a circular or spherical transmitting and receiving surface (8) for transmitting ultrasonic waves to and receiving reflected waves from a sample (3) to be examined in a body of liquid (2), such as water, a motor drive unit (7) having a movable arm thereon (6) connected to the acoustic lens (5) for supporting and moving the for scanning the sample, the motor drive (7) being connected to the (10) for being operated thereby to perform the scanning, a computer (16) having a visual display unit (18), and an oscilloscope (20) for indicating the reflected waves.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: August 27, 1996
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Ewa Drescher-Krasicka
  • Method and apparatus for detecting guided leaky waves in acoustic microscopy
    Patent number: 5406849
    Abstract: An apparatus and method for non-destructive examination of an interface within a body between two separate elements of the body wherein an acoustic microscope (124) has an ultrasonic transmitter (114) for directing ultrasonic waves at an angle to a body (1) and an interface (122) within the body between an outer part (3) and an inner part (2), an acoustic receiver (116) in spaced relationship to the transmitter (114) for receiving acoustic leaky waves from the interface (122), and a supporting device for supporting the transmitter and receiver for simultaneous scanning movement relative to the body at the same scanning speed. The body to be examined may be supported immersed in a liquid such as water (120) in a tank (121) so that the ultrasonic waves from the transmitter are directed at a predetermined angle depending on the materials of the separate elements and-pass through the liquid and the outer part before impinging on the interface in the body to be examined.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: April 18, 1995
    Assignee: The United States of America, as represented by the Secretary of Commerce
    Inventors: Ewa Drescher-Krasicka, John A. Simmons
  • Method and apparatus for visualization of internal stresses in solid non-transparent materials by elastoacoustic technique
    Patent number: 5307680
    Abstract: A process and apparatus for visualization of internal stresses in solid materials by an acoustic microscope (10) connected to an acoustic lens (5) having a circular or spherical transmitting and receiving surface (8) for transmitting ultrasonic waves to and receiving reflected waves from a sample (3) to be examined in a body of liquid (2), such as water, a motor drive unit (7) having a movable arm thereon (6) connected to the acoustic lens (5) for supporting and moving the lens for scanning the sample, the motor drive (7) being connected to the acoustic microscope (10) for being operated thereby to perform the scanning, a computer (16) having a visual display unit (18), and an oscilloscope (20) for indicating the reflected waves.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: May 3, 1994
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Ewa Drescher-Krasicka