Inventor
BURKHARDT GARY L
US11 patents
Patents
11 patentsUS6201391B1Mar 13, 2001
Nonlinear harmonics method and system for measuring degradation in protective coatings
SOUTHWEST RES INST60 citations96
US4979125ADec 18, 1990
Non-destructive evaluation of ropes by using transverse impulse vibrational wave method
SOUTHWEST RES INST64 citations96
US6239593B1May 29, 2001
Method and system for detecting and characterizing mechanical damage in pipelines using nonlinear harmonics techniques
SOUTHWEST RES INST69 citations94
US7038444B2May 2, 2006
System and method for in-line stress measurement by continuous Barkhausen method
SOUTHWEST RES INST23 citations91
US5180969AJan 19, 1993
Detection of reinforcing steel corrosion in concrete structures using non-linear harmonic and intermodulation wave generation
SOUTHWEST RES INST52 citations91
US6779409B1Aug 24, 2004
Measurement of torsional dynamics of rotating shafts using magnetostrictive sensors
SOUTHWEST RES INST30 citations90
US4408160AOct 4, 1983
Acoustic Barkhausen stress detector apparatus and method
SOUTHWEST RES INST38 citations90
US7154264B2Dec 26, 2006
System and method using a collapsable coil for inspection of pipelines having internal restrictions
SOUTHWEST RES INST16 citations82
US6775625B2Aug 10, 2004
System and method for nondestructive testing simulation
SOUTHWEST RES INST7 citations72
US6836735B2Dec 28, 2004
Method and system for injecting virtual flaw signals into a nondestructive test system
SOUTHWEST RES INST3 citations60
US7501814B2Mar 10, 2009
Apparatus and method for second-layer through-bushing inspection of aircraft wing attachment fittings using electric current perturbation
SOUTHWEST RES INST2 citations59