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. 05, 2013
Filed:
Apr. 10, 2009
Alexander Karabutov, Moscow, RU;
Mikhail Lyamshev, Moscow, RU;
Vladislav Mikhalevich, Moscow, RU;
Manomohan Subudhl, East Setauket, NY (US);
Upendra Rohatgl, East Setauket, NY (US);
Alexander Karabutov, Moscow, RU;
Mikhail Lyamshev, Moscow, RU;
Vladislav Mikhalevich, Moscow, RU;
Manomohan Subudhl, East Setauket, NY (US);
Upendra Rohatgl, East Setauket, NY (US);
SpectraQuest, Inc., Richmond, VA (US);
Abstract
A laser opto-acoustic apparatus and method is applied for nondestructive testing of defects and residual stresses in solids. A nondestructive testing apparatus may have a piezoelectric transducer for measuring oscillations in a solid. The oscillations or waves may be caused from longitudinal, shear, and/or Raleigh waves in the object to be tested. The nondestructive testing apparatus may also include a laser. The laser is capable of generating the longitudinal, shear, and/or Raleigh waves in the object. One method of performing nondestructive testing of materials may include creating at least one of a longitudinal, shear, and/or Raleigh wave in an object and measuring the speed of the wave in the object. The speed of the waves may be compared with the speed of waves in a material without defects to determine whether the object to be tested has defects.