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Vibration Data: Ford Focus Shock Absorber Casing

General Information

Contact: Dr Alex Weddell
Institution: University of Southampton
Parameter: Vibration, 3-axis
Specific Location: Shock Absorber Casing (Front LHS) on 1999 Ford Focus 1.6 Petrol
Data Duration: 00d 00h 43m 51s
Sampling Frequency: 1024 Hz
Date Obtained: 31-Oct-2011 09:31:33

Acknowledgment: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) under grant number EP/G067740/1 "Next Generation Energy-Harvesting Electronics: Holistic Approach"

Photo of test location


Detailed Test Information

Original Filename: 2011-10-31 AM Ford Focus F NS Shock Absorber.csv

Test Equipment:

PCB Piezotronics 354C03 tri-axial accelerometer
PCB Piezotronics 480B21 signal conditioner
Keithley KUSB-3102 USB data logger

Calibration Parameters

X: 94.4 mV/g
Y: 102.7 mV/g
Z: 98.0 mV/g

Axis Directions

X: Longitudinal
Y: Transverse
Z: Vertical

Downloads/Links

Raw Data CSV (zipped)
Test Map (KML points)

Graphical Test Results

Peak Acceleration Frequency and Amplitude

Peak Acceleration Frequency and Amplitude

FFT at Maximum Vibration Amplitude

FFT at Max Vibration Amplitude

X-axis Vibration Characteristics

X-axis Vibration Characteristics

Y-axis Vibration Characteristics

Y-axis Vibration Characteristics

Z-axis Vibration Characteristics

Z-axis Vibration Characteristics

Automated Analysis

Processing Parameters

Sample rate: 1024 Hz
Duration: 2631 s
Settling time: 10 s
FFT interval: 1 s
FFT length: 1 s
Number of FFTs performed: 2621

Results

Highest mean vibration axis: Z

X-axis

Max Accel Ampl: 87.5 mgpeak at 13.0 Hz at 642 s

Time Peak Accel Ampl above 50% of Max Ampl: 68.0 s (2.6 %)
Peak Accel Freq Range (above 50% of Max Ampl): 13.0 ... 104.0 Hz
Mean Accel Freq (above 50% of Max Ampl): 24.5 Hz

Mean Peak Acceleration Ampl (whole test): 19.7 mgpeak
Mean Peak Acceleration Freq (whole test): 38.7 Hz

Y-axis

Max Accel Ampl: 73.7 mgpeak at 13.0 Hz at 1364 s

Time Peak Accel Ampl above 50% of Max Ampl: 223.0 s (8.5 %)
Peak Accel Freq Range (above 50% of Max Ampl): 12.0 ... 254.0 Hz
Mean Accel Freq (above 50% of Max Ampl): 153.0 Hz

Mean Peak Acceleration Ampl (whole test): 21.9 mgpeak
Mean Peak Acceleration Freq (whole test): 113.7 Hz

Z-axis

Max Accel Ampl: 158.8 mgpeak at 13.0 Hz at 642 s

Time Peak Accel Ampl above 50% of Max Ampl: 35.0 s (1.3 %)
Peak Accel Freq Range (above 50% of Max Ampl): 9.0 ... 19.0 Hz
Mean Accel Freq (above 50% of Max Ampl): 14.0 Hz

Mean Peak Acceleration Ampl (whole test): 30.3 mgpeak
Mean Peak Acceleration Freq (whole test): 17.9 Hz

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