80kN Shaker Facility
General Description
The 80kN shaker facility can accommodate test articles from small component levels up to small S/C or S/C subsystems with maximum static loads of 900kg in vertical and 2000kg in horizontal configuration.
The 80kN shaker is a mid-size water-cooled electro-dynamic shaker based on a long-stroke vibrator V964 with a nominal thrust of 80kN continuous. The shaker facility can be configured for vertical or horizontal excitation direction, thereby allowing for full 3-axes vibration test performance.
The facility operates in a frequency regime of 3Hz - 2500Hz.
Test modes
The vibration input is generated by a state-of-the-art vibration controller with up to 40 control and measurement channels, all usable for test article response limiting.
A variety of types of excitation is available, such as:
- Sine testing, e.g. sine sweep, tracked sine dwell
- Random testing
- Transient testing, e.g. classic half sine shock, saw-tooth, transient waveform replication/SRS
If the 40 channels from the vibration controller are not enough, the test article responses can be measured by a dedicated mechanical data handling system, offering up to 800 channels.
Mechanical Interface
The test article can be mounted either directly on the shaker armature interface, on a standard adapter plate, attached to a cube (various sizes available), or on top of a light composite head expander that offers an increased mounting surface with a 80x80mm M10 hole pattern for the vertical configuration.
For horizontal configuration, the shaker can be coupled to a slip table that provides a usable area of 1000mm x 1100mm.
Technical parameters
DESCRIPTION
VERTICAL CONFIGURATION
SLIP TABLE CONFIGURATION
Nominal maximum thrust:
- Sine testing [kN]
80
80
- Random testing [kN RMS]
75
75
- Transient testing [kN peak]*
226
226
*note: Theoretical maximum. Actual value will depend on payload and pulse width.
Frequency range:
- Sine testing (min-max) [Hz]
3 – 2500
3 – 2500
- Random testing (min-max) [Hz]
10 – 2000
10 – 2000
- Transient testing (min-max) [Hz]
10 – 2000
10 – 2000
Maximum displacement:
- Sine and random testing [mm p-p]
38
38
- Transient testing [mm p-p]
51
38
- Over travel limit switch [mm p-p]
56
50
Maximum velocity [m/s]
2
2
Maximum no-load acceleration:
- Sine testing [g]
100
33
- Random testing [g RMS]
30
30
Minimum controllable level [g]
0.1
0.1
Fundamental resonance frequencies (bare test facility) [Hz]
2400
700
Maximum static vertical load [kg]
908
2000
Mass of the moving assembly [kg]
56.8
245.1