We offer standard test applications software to serve
the range of needs associated with ASTM E647.
Research continues on however, and the work conducted
by the University of Arkansas (Dr. Ashok Saxena) remains on the leading
edge and is performed using several TestResources high temperature
servohydraulic machines by researchers focused on improving and understanding
mechanical behavior of metals at both ambient and high temperatures.
Time-dependent fracture mechanics and low - cycle strain controlled
fatigue experiments continue to contribute to the development of improved
understanding of microstructure-property relationships, reliability
and risk analysis and ultimately how to extend the life of aging structural
A 900LX11 test system was specially optimized
for ambient and high temperature fracture research. Special uniquely
designed load line extensometers capable of operation to 1600F enable
precision control for the test. The system includes fatigue test software
that controls the test and analyses results automatically according
to ASTM E647 and more. And with the GDS software platform, researchers
can create their own special applications.
B0803 Fatigue crack growth application software follows
ASTM E647 standards. The application supports testing on a wide range
of specimen geometry including C(T) LLD, MOD, SE(B), DC(T) and user
Test settings include selecting the specimen geometry;
setting dimensions, max load, stress ratio and test frequency. The
application allows a total description of ten steps with cycling at
constant load, decreasing delta K, and Increasing delta K. Online
crack computation from unloading modulus. Test stop conditions can
be set in terms crack growth, crack increment, number of cycles, Kmax,
Test settings can be stored which allows the user to
run similar tests at a later date with minimal setup. Cycling at two
different frequencies ensures maximum data collection for crack estimates.
The test stops in case of overload or under load below specified percent
detected. Option to manually enter the crack size at two different
points and adjust the crack estimate accordingly. The option is provided
to hold the test at any point and resume the test from that point.
Automatic data acquisition settings for the 2350 controller are included
in the product. Test results can be exported to excel online. Data
files are stored in folders created each day, with files carrying
day and time along with assignment name.
Us - Testing Systems for FCG