Fatigue property test method for wallboard lap joint structure
A technology of fatigue performance and test method, which is used in the testing of machine/structural components, testing of mechanical components, measuring devices, etc. It can solve the problems of insufficient accuracy, prediction deviation, and difference in fatigue life, which cannot be used for fatigue life prediction. , to achieve the effect of eliminating bending deformation, ensuring effectiveness, and good test results
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[0022] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0023] Test piece: typical wall panel lap joint structure, the material of the load-carrying plate and the butt plate is LY12-CZ aluminum alloy, and the bolt material is 30CrMnSiNi2A. The dimensions of the test piece are shown in Figure 5.
[0024] Step 1 Installation of test pieces:
[0025] Step a) Clamp the splint 4 directly on both sides of the test piece and connect it with bolts; add a 12mm thick aluminum alloy spacer 6 between the butt plate 2 and the splint 4; The contact part is coated with grease added with molybdenum disulfide, and the polytetrafluoroethylene film is used as a lubricating strip;
[0026] Step b): install a triaxial bending limiting device 5 outside the splint 4, and tighten the bolts on the splint 4 and the triaxial bending limiting device 5 to 17Nm with a torque wrench;
[0027] Step c): Clamp the two ends of the test piece with th...
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