Page 11 - Automotive Aerospace

i
i
gu
i
ti
i
i
gu
gu
g
gu
g
g
g
a
a
a
a
Fa
Fa
Fa
a
a
t
a
a
a
a
e
st
st
in
st
s
s
s
g
g
g
g
in
n
n
Te
T
Te
e
e
e
e
e
e
e
Te
Te
Te
Te

cy
Gi
cy
cy
cy
y
cl
cl
c
c
cl
ga
g
Gi
Gi
Gi
cy
cy
cy
cy
cy
cy
e
e
e
e
e
e
e
e
Giggacyycllee Fattiigue Testing
e
e
e
e
e
e
e
e
e
e
e
e
e
1000
It is necessary to guarantee the long-term effective, reliable use of many
20 Hz General fatigue tester
20 Hz General fatigue tester
products and equipment, including aircraft, automobiles, railways, marine
300 Hz High-cycle fatigue tester
300 Hz High-cycle fatigue tester
1 kHz Non-resonant fatigue testerɹ
structures, and electrical plants. 100
Test time (days) 1 kHz Non-resonant fatigue testerɹ
To ensure the safety of engine turbine blades and wheel axles, the 20 Hz General fatigue tester
20 kHz USF-2000
20 kHz USF-2000
20 kHz USF-2000
7
conventional 10 cycle fatigue limit is no longer adequate; clarification of
10
fatigue in the ultra-long-life range from 10 to 10 cycles is now needed 10 300 Hz High-cycle fatigue tester
8
for all materials. 1 kHz Non-resonant fatigue tester
The piezo-electric element in the ultrasonic fatigue tester generates a 1
vibration of 20 kHZ, which is amplified by the horn and transmitted to the
sample, to achieve oscillation rates of 20 kHz. This permits significantly
shorter test cycle times. 0.1
10 6 10 7 10 8 10 9 10 10 10 11
Test Cycle
C
t
Ult
i
B
Ti
F
t
C
C Cycle Time Comparison Between Ultrasonic and Conventional Fatigue Testers
t
i
t
d
i
l
i
l
T
Piezoelectric actuator
Horn
Sample
Displacement Stress Stress Displacement
USF Series Ultrasonic Fatigue Tester Sch ema tic Re presen tation o f T est For ce Loads on aS amp le
Schematic Representation of Test Force Loads on a Sample
More Efficient Discovery of Inclusions
Confirming whether samples contain inclusions and the subsequent
analysis of any inclusion found is an effective way to ensure the supply of
Fatigue fracture from inclusion initiation point
materials with high fatigue strength. When an ultrasonic fatigue tester is
used to cause an internal fracture in the sample, the largest inclusion in
the volume of the portion that has a potential risk to fracture becomes the
initiation point of the fracture. Inclusions can be easily detected by
observing the fracture surfaces. This is a much more efficient method of
inclusion detection than conventional methods.
Permits discovery and analysis
of inclusion in sample
lusion
Images of Inclusion
Testing and Evaluation Equipment
for the Aerospace Industry
Solutions for Aerospace Testing 11