PSI - Issue 75

Sébastien Boudevin et al. / Procedia Structural Integrity 75 (2025) 72–84 Author name / Structural Integrity Procedia (2025)

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grating/soil, concrete/resin), Rolling zones, Life situation (flat rolling, on a slope (low/moderate/high), on an obstacle), Obstacle (straight line, turn, 5 cm step, 10 cm step, speed bump, cable duct), Direction (uphill, downhill, forward, backward). At the end, a testing program of more than 200 configurations has been established based on the presented parametric variables. The testing area are presented on the picture below on CETIM Senlis site (Fig 9.). Table 2. Individual use cases results Case 1.1 1.2 2.1 2.2 3.1 3.2 Max Battery Temperature (°C) 22.5 23 26 26 26 26 Ambient Temperature (°C) 21 21 26 26 25 25 DC cumulative Energy (wh) 106.3 212.6 128.0 256.0 705.2 1406.6 Cumulative Distance (m) 1115 2230 1267 2534 7695 15373 Cumulative time (h) 0,64 1h28min 0.72 1h45min 4 8 Number of Repeats 9 4 7 3 1 0

Fig. 9. Testing areas for usage characterization The automatized treatment involves an Aqira App, chaining the following analyses: ✓ Renaming measurement files and adding context ✓ Signal post-processing allowing, for example, the application of filters to raw measurements ✓ Getting electrical results with the addition of test context: currents/voltages, powers, efficiencies, energy, energy histogram by speed range ✓ Shock response spectrum and fatigue damage spectrum results ✓ Energy histograms by speed range, time at level, Efficiency, Power Level Crossing ✓ Indexing raw and intermediate files