To meet the requirements of an axle manufacturer, XTOP3D technical engineers utilized the XTDIC 3D full-field strain measurement system and the XTDP 3D photogrammetry system to measure surface displacement and material strain on the axle while loads were applied to both ends.
Accuracy verification of the XTOP3D XTDIC system was also conducted on-site. Data were simultaneously collected using the XTDIC system and strain gauges placed on the axle surface; analysis showed that the difference in accuracy between the strain gauge readings and the XTDIC measurements at the same locations was within 50 microstrain, demonstrating that the XTDIC system delivers comprehensive, high-quality data.
In a laboratory setting, two measurement methods—XTDIC full-field displacement/strain analysis and XTDP photogrammetry for static deformation at key points—were employed to monitor displacement and strain at critical surface locations during simulated axle loading. This provided the necessary data to support deformation inspection and reliability analysis.
The axle loading test utilized a four-channel control system operating in load-control mode, involving continuous loading from 1 to 40 tons over a period of 120 seconds. Upon reaching the 40-ton load, the force was maintained while the XTDIC system performed full-field displacement and strain measurements. A black-and-white speckle pattern was applied to the axle surface beforehand, and the equipment was positioned directly facing the test object to capture a sequence of images in real-time as the axle deformed; subsequent data analysis via the XTDIC system yielded the full-field displacement and strain results.
