Page 70 - Shimadzu Dynamic and Fatigue Testing Systems

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Shimadzu has about 800 highly experienced field service engineers stationed around the world to ensure quick, reliable response to customers' Amplitude Characteristics
testing and measuring requirements.
Amplitude characteristic curves are logarithmic graphs that indicate the testing capacity of systems, with frequency plotted on the
horizontal axis and the half-amplitude plotted on the vertical axis. Characteristics of the Servopulser series dynamic and fatigue
testing systems are determined by the actuator, hydraulic power supply unit capacity, and the servo valve flow rate rating and
frequency characteristics. Select the optimal system by checking the amplitude characteristics to see that they are consistent with
the corresponding test conditions. Tests can also be performed at frequencies below 0.1 Hz; these are not shown here.
Shimadzu Shimadzu Instruments Manufacturing Shimadzu
Europa GmbH (Germany) Co., Ltd. (Suzhou) Scientific Instruments, Inc. (USA)
The amplitude characteristic curves in this product brochure indicate the relation between half-amplitude and cycle speed, given sine wave
motion at the rated load level.
The lower left area of each characteristic curve indicates the testing capacity range, which depends on the capacity and stroke length of the
selected actuator and the capacity of the hydraulic power supply unit.
The curve below indicates the amplitude characteristics given a 60 Hz power supply. Characteristics with a 50 Hz power supply will be about 5/6
of indicated values.
The amplitude characteristics indicated in this brochure do not include the frame or load cell characteristics. Compensate for the influence of
these factors to determine actual amplitude characteristics.
The amplitude characteristics indicated in this brochure were calculated based on typical characteristics of the servo valve being used, which may
result in a difference of about 10 % on the frequency axis.
There may be limitations on testing frequencies, due to the jig, sample, or other characteristics.

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Half-amplitude Amplitude 1G
Sine wave 100cm/s 100G
1 cycle 0.1G 10G
10 10cm/s
Half-amplitude (mm) 0.01G
6
To Perform Tests at a Frequency of 10 Hz
Starting at 10 Hz on the horizontal axis, move your finger 1 1cm/s
upward parallel to the vertical axis until it intersects the
amplitude characteristics curve. Then move it left parallel to the 0.1cm/s
horizontal axis until it intersects the vertical axis. The value at
that intersection point indicates the half-amplitude testing
capacity at 10 Hz. In other words, it indicates that at 10 Hz the
Sales bases
system is capable of applying a maximum amplitude of ±6 mm. 0.1
0.1 1 10
Manufacturing locations
Frequency (Hz)
Distributors

Frequency vs. Testing Time

Shimadzu International Trading Co., Ltd. Shimadzu Murasakino Works (Japan) Shimadzu do Brasil Comercio Ltda. 7
(Shanghai) Corporation Head Office (Japan) (Brazil) This table indicates the time required to perform 10 test Test frequency Cycles Testing time
cycles at the given frequency. 1Hz 10 7 cycles 116 days
Fatigue tests involve a huge number of cycles. Therefore, 3Hz 10 7 cycles 29 days
performing tests at high frequencies can significantly reduce 5Hz 10 7 cycles 23 days
10Hz 10 7 cycles 12 days
the overall testing time.
30Hz 10 7 cycles 3.9 days
50Hz 10 7 cycles 2.3 days
100Hz 10 7 cycles 1.2 days
300Hz 10 7 cycles 9 hours
20kHz 10 7 cycles 8 minutes

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