Test of Polaris Swing Arm

The composite swing arm of Polaris was tested to failure. A testing rig was developed from which weight could be hung until the swing arm broke. The test rig is composed of a metal top plate bolted to an L-shaped lower metal plate (figures 1 and 2). Between these two plates is the composite swing arm.

Figure 1: Solidworks model of the test rig

Figure 2: Test rig

The test rig was mounted to a forklift and weight was hung off the rig. In figure 3 a forklift was used to move four 250 lbs. plates used to test the part. In figures 4-7 the test rig is mounted on the forklift. Figure 7-9 show the fracture in the part after it has broken. The test rig is removed from the forklift in figures 10-12. Figure 13 is the composite swing arm after it has been removed from the test rig. In figure 14-16 the actual weight hung from the eyebolts attached to the test rig is determined. The team that conducted the testing is in figure 17.

Figure 3: Four 250 lbs plates are used to test the part

Figure 4: The test rig is mounted to the forklift

Figure 5: Test rig fully mounted to the forklift

Figure 6: Weight is hung from the eyebolts

Figure 7: The part after it has broken

Figure 8: The break is a fracture in the swing arm

Figure 9: Another view of the break

Figure 10: The rig is disassembled

Figure 11: Another view of the disassemling

Figure 12: The rig is removed from the forklift

Figure 13: The swing arm is removed from the test rig

Figure 14: The actual weight of the first test was 505.90 lbs.

Figure 15: The actual weight of the second test was 556.88lbs

Figure 16: The actual weight of the third test was 606.15lbs

Figure 17: The testing team

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