|
|
|||||
|
|
|||||
Experimental Mechanics @
|
|||||
|
|
|||||
|
Facilities
for Thermoelasticity |
|||||
|
|
|
|
|
||
|
|
|
|
|
||
|
|
|||||
|
The SPATE 4000 (Stress
Pattern Analysis by Thermal Emission) system builds a raster scan of a
surface by bringing a single thermoelastic detector to bear on a sequence of
points using two moveable mirrors. The
dwell time for each point in the scan is typically one second to one tenth of
a second, depending on experimental conditions, so the time taken to build
the entire scan is dependent upon the spatial resolution required. The detector is cooled by liquid nitrogen
and the system is controlled with a signal correlator
and windows computer system. Raw uncalibrated thermoelastic data from a hole in aluminium plate. |
|||||
|
|
|
|
|
||
|
|
|
||||
|
|
|
|
|||
|
|
|
|
|||
|
|
|
||||
|
|
|
||||
|
|
|
||||
