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Heavy-Duty Truck Axle End-of-Line Quality Test - Gear Mesh Noise

  • Test Object:

    Heavy-Duty Truck Axles

  • Application Scenario:

    End-of-Line Quality Test

  • Challenges:

    The main axle noise comes from the single-frequency gear mesh noise, making it easily audible even under the loud engine noise.

  • Method of Evaluation:

    On the EOL test bench, speed, torque, vibration of the main and hub reducers are collected, and order analysis is performed during the uniform acceleration and deceleration of the axle. Figure 2 shows that the order spectrum amplitude of defective products is significantly higher than that of qualified products with the sideband of 1st order (input shaft order).

Figure 1: Axle under EOL quality test
Figure 1: Axle under EOL quality test
Figure 2: Order spectrum of qualified (black) and defective (red) products
Figure 2: Order spectrum of qualified (black) and defective (red) products
Figure 3: Real-time test results as displayed on SigMA
Figure 3: Real-time test results as displayed on SigMA

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Synovate provides reliability, quality and health test solutions based on machine hearing technology for product whole lifecycle management