Method of nondestructively testing materials by ultrasound United States Patent 3918295

3918295 is referenced by 8 patents and cites 4 patents.

A method of nondestructively testing materials by ultrasound comprises continuously supplying a non-contact-making transmitter with electrical high-frequency power at a suitable frequency for generating ultrasound waves; amplitude-modulating with a low frequency in the transmitter and/or in a receiver the ultrasound waves generated in the transmitter and/or the signal voltage received in the receiver by the creation of a low-frequency magnetic field; and using the amplitude-modulation for separating the received signals from internal noise or external interference.

Title
Method of nondestructively testing materials by ultrasound
Application Number
05/365,324
Publication Number
3918295
Application Date
May 30, 1973
Publication Date
November 11, 1975
Inventor
Herbertz Joachim
Agent
Markva Neil F
Assignee
Raimar Pohlman
IPC
G01N 29/04
G01N 29/24
View Original Source

Citations: 8

  1. Paul J Latimer, Daniel T MacLauchlan: EMAT probe and technique for weld inspection. Daniel S Kalka, Robert J Edwards, June 2, 1998: US05760307 (208 worldwide citation)
  2. Paul F Sabourin, Gregory P Selby: Method of ultrasonically inspecting turbine blade attachments. Electric Power Research Institute, Flehr Hihbach Test Albritton & Herbert, July 4, 2000: US06082198 (32 worldwide citation)
  3. William E Peterson, Robert B Thompson: Electromagnetic acoustic transducer. Rockwell International Corporation, H Fredrick Hamann, Craig O Malin, John J Deinken, March 6, 1984: US04434663 (20 worldwide citation)
  4. Wilhelm Repplinger, Gerhard Hubschen, Hans Jurgen J Salzburger: Non-destructive, non-contact ultrasonic material. Fraunhofer Gesellschaft zur Forderung der angewandten Forschung e V, Robbins & Laramie, August 21, 1984: US04466287 (16 worldwide citation)
  5. Hans Jurgen Bathmann, Gert Fischer, Heinz Schneider: Ultrasonic testing of sheet and plate stock. Mannesmann Aktiengesellschaft, Ralf H Siegemund, January 4, 1983: US04366712 (11 worldwide citation)
  6. Paul F Sabourin: Apparatus and method for ultrasonic reconstruction and testing of a turbine rotor blade attachment structure. Electric Power Research Institute, William S Galliani, Flehr Hohbach Test Albritton & Herbert, April 25, 1995: US05408884 (9 worldwide citation)
  7. Harold M Frost, Thomas L Szabo: Electromagnetic ultrasound transducer. The United States of America represented by the Secretary of the Air Force, Joseph E Rusz, Willard R Matthews Jr, July 25, 1978: US04102207 (4 worldwide citation)
  8. Procede de generation et de detection dondes ultrasonores dans un corps solide conducteur de lelectricite. Ti Group Services, January 13, 1978: FR2354825-A1 (2 worldwide citation)

References: 4

  1. Gaerttner Martin R: Two-dimensional coils for electro-magnetic generation and detection of acoustic waves. The United States of America represented by the United States Atomic, Anderson Roland A, Haran John A, Cornish Cornell D, January 22, 1974: US3786672 (16 worldwide citation)
  2. Houck James R, Bohm Henry V, Bowers Raymond, Wallace William D: Nondestructive testing of conductive objects using ultrasonic waves. June 8, 1971: US3583213 (22 worldwide citation)
  3. US3436958
  4. US3555887