Microwave pulse-echo radar imaging for the nondestructive evaluation of civil structures

1995 ◽  
Vol 28 (5) ◽  
pp. 316
Keyword(s):  
Nondestructive Evaluation ◽  
Microwave Pulse ◽  
Radar Imaging ◽  
Civil Structures ◽  
Echo Radar ◽  
Pulse Echo

scholarly journals An Innovative Microwave-Imaging Technique for Nondestructive Evaluation: Applications to Civil Structures Monitoring and Biological Bodies Inspection

2006 ◽  
Vol 55 (6) ◽  
pp. 1878-1884 ◽  
Author(s):  
Manuel Benedetti ◽  
Massimo Donelli ◽  
Anna Martini ◽  
Matteo Pastorino ◽  
Andrea Rosani ◽  
...  
Keyword(s):  
Nondestructive Evaluation ◽  
Imaging Technique ◽  
Microwave Imaging ◽  
Civil Structures

Correlations Between Advanced Nondestructive Evaluation Methods and Fracture Mechanics Parameters

1980 ◽  
Vol 102 (1) ◽  
pp. 50-55 ◽  
Author(s):  
C. M. Teller ◽  
J. R. Barton ◽  
G. A. Matzkanin ◽  
F. N. Kusenberger ◽  
R. E. Beissner
Keyword(s):  
Surface Wave ◽  
Fracture Mechanics ◽  
Nondestructive Evaluation ◽  
Surface Waves ◽  
Fatigue Cracks ◽  
Small Surface ◽  
Magnetic Perturbation ◽  
Hinge Model ◽  
Pulse Echo ◽  
Aisi 4340

Investigations were conducted on surface entering fatigue cracks, 0.13 to 1.27 mm (0.005 to 0.05 in.) long, in rod-type tensile specimens of HY 180 and AISI 4340 steels using surface wave ultrasonics and magnetic perturbation. Pulse-echo, surface wave ultrasonic results indicate that at 10 MHz the minimum flaw size detectable in HY 180 specimens is two to three times larger than that in AISI 4340. Also, fatigue cracks as long as 0.76 mm (0.030 in.) in HY 180 specimens could not be reliably detected with 10 MHz surface waves unless load was applied to open the crack. Extensive magnetic perturbation measurements on AISI 4340 suggest a “hinge” model for the opening of small surface entering fatigue cracks.

Practical considerations in pulse-echo radar for short range sensing

1998 ◽  
Vol 47 (5) ◽  
pp. 1078-1084 ◽  
Author(s):  
D.L. McClanahan ◽  
J.C. Zuercher ◽  
D. Misra
Keyword(s):  
Short Range ◽  
Range Sensing ◽  
Echo Radar ◽  
Pulse Echo
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