Upload
vodung
View
235
Download
1
Embed Size (px)
Citation preview
Introduction to NDE UltrasonicSystems
Learning Objectives
familiarity with:ultrasonic system componentsultrasonic NDE terminology
basic information on transducersconstructiontypes
common ultrasonic displays
flaw
cabling cabling
Pulser Receiver
flaw signal
Ultrasonic System Components
vi(t)vR(t)
input voltageoutput voltage
transducer(transmitter)
transducer(receiving)
component beinginspected
MODEL 5072PR PULSER-RECEIVER
Pulser/Receiver
Pulse-echo
Pitch-catch
Common ultrasonic testing configurations
Through- transmission
Common ultrasonic testing configurations
Digital Oscilloscope
back surface reflection
flaw signal
main "bang" signal
oscilloscope display
Ultrasonic Signals
Ultrasonic A-Scan
Portable Flaw Detectors
caseelectrical network
backing
crystal
wear plate
connector
electrodes
Ultrasonic System Components
Contact Transducer
search tube
quarter wave plate
Ultrasonic System Components
Immersion Transducer
Immersionscanningsystem
Ultrasonic System Components
Focused Transducer
acoustic lens
Ultrasonic B-Scan
x
back surface
z
B-scan display
20 MHz B-Scan of a composite,showing laminates
Ultrasonic C-Scantransducer scan pattern
x
y
z
C-scan image of chem-milled panels athorizontal lap splice / vertical butt spliceon a 727 fuselage
C-scan image of an IC assembly
B-scan of the same assembly
Ultrasonic System Components
References
Krautkramer, J. and H. Krautkramer, Ultrasonic Testing of Materials, Springer Verlag, 1990.
Blitz, J. and G. Simpson, Ultrasonic Methods ofNon-destructive Testing, Chapman & Hall, London,UK,1996.