Module 6.1 – Field Data Replication (FDR) Test

Back to: VibrationVIEW Syllabus

Use the Hardware, Inputs, and System Limits configuration from Module 1.1.

1. Create an FDR Test

a. Select New Test > Field Data Replication.
b. Select Playback.
c. Point to Playback File(s) and select the Browse button to the right of the first line.
d. Select the pre-recorded file AcceleratorStomp.vfw.
e. Select Limits and enter the following limits:

• Startup Drive Limits
  • Select Use System Threshold Setting
  • Select Use System Drive Check Settings
• Drive Limits
  • Max System Gain: 5 V/G
  • Max Output: 5 VRMS

f. Select OK and save the test as Accelerator Stomp Lab Trial.

2. Create the Graphs

a. Select New Graph.
b. Graph 1 configuration

• Graph Type: Acceleration vs. Freq.
• Graph Traces:
  • Control Loop Traces: Demand, Control
  • Input Channels: Ch1

c. Graph 2 configuration

• Graph Type: Acceleration Waveform
• Graph Traces:
  • Control Loop Traces: Demand, Control
  • Input Channels: Ch1

3. Run the Test

a. Listen to the test.
b. Watch how the acceleration waveform graph changes with changes in sound.

4. Create a Report

a. Select Report
b. In the report, include the following information:

• Customer information: Name and Module Number
• VibrationVIEW screen
• Breakpoint Table
• Channel Measurements

5. Evaluate the Test

a. The goal of FDR is to produce a vibration test that closely resembles the vibrations found in the field. From this demonstration, do you think that FDR accomplishes this goal? Yes, FDR was very realistic in its representation of the hitting of an accelerator. It is easy to hear the changes from idle, to the rev of the engine, and to the higher RPM running of the engine.
b. The acceleration waveform is constantly changing, just like the sound of the test. The largest change is from idle to revving.
c. Create a copy of the acceleration waveform graph when the vehicle was idling and a second copy of the acceleration waveform graph when the vehicle was “revving.” What were the maximum forces (G) put out by the vehicle in each case?
d.  Four potential uses for FDR in a real-world test environment include repeating field occurrences, creating fatigue damage spectrum, analyzing field data to create random test data, and visually seeing what the product is experiencing in the field.