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SAE J 1490 : 2011

Current
Current

The latest, up-to-date edition.

MEASUREMENT AND PRESENTATION OF TRUCK RIDE VIBRATIONS
Published date

17-05-2011

1 Scope
    1.1 Purpose
2 References
3 Definitions
    3.1 Vibration Measurement Axis Reference
    3.2 Terminology
          3.2.1 Overlap Processing
          3.2.2 PSD
          3.2.3 Ride Vibrations
          3.2.4 RMS
          3.2.5 Seat Pad
          3.2.6 Signal-to-Noise Ratio
          3.2.7 Spectrum
          3.2.8 Test Section
          3.2.9 Transverse Sensitivity
          3.2.10 Windowing
    3.3 Letter Symbols
4 General Test Design
5 Test Preparation and Documentation
    5.1 Vehicle
    5.2 Test Site
    5.3 Operator
    5.4 Operating Conditions
6 Subjective Ride Evaluations
7 Instrumented Ride Vibration Measurements
    7.1 Measurement Instrumentation
          7.1.1 Accelerometers and Signal Conditioning
          7.1.2 Acceleration Data Recording
          7.1.3 Instrumentation Data Sheet
    7.2 Accelerometer Location
    7.3 Data Analysis
          7.3.1 Stationary of Data
          7.3.2 Acceleration Measures
                  7.3.2.1 g(rms)
                  7.3.2.2 Weighted g(rms)
                  7.3.2.3 1/3 Octave Peak g(rms)
                  7.3.2.4 ISO 1/3 Octave Peak
                  7.3.2.5 Exceedance
                  7.3.2.6 Absorbed Power
          7.3.3 Data Analysis Parameters
                  7.3.3.1 Data Duration
                  7.3.3.2 Prepossessing Filters
                  7.3.3.3 Sampling Frequency
                  7.3.3.4 Sampling Accuracy
                  7.3.3.5 Sampling Window
                  7.3.3.6 Frequency Resolution
                  7.3.3.7 Overlap Percentage
                  7.3.3.8 Precision of Spectral Estimates
8 Data Presentation
    8.1 Graphic Presentation
          8.1.1 Power Spectral Density
          8.1.2 Square Root of Power Spectral Density
          8.1.3 Time Domain Histogram
    8.2 Ride Measures Presentation

Gives a uniform procedure for measuring ride vibrations for all Class 7 and 8 commercial vehicles, including combination vehicles and straight trucks.

DocumentType
Standard
ProductNote
This version is now stabilized
PublisherName
SAE International
Status
Current

SAE J 1013 : 1992 MEASUREMENT OF WHOLE BODY VIBRATION OF THE SEATED OPERATOR OF OFF-HIGHWAY WORK MACHINES
SAE J 1060 : 2014 SUBJECTIVE RATING SCALE FOR EVALUATION OF NOISE AND RIDE COMFORT CHARACTERISTICS RELATED TO MOTOR VEHICLE TIRES

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