Mechanical Testing of Flag Joint Assembly. TF Flag Assembly to be Tested.

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Presentation transcript:

Mechanical Testing of Flag Joint Assembly

TF Flag Assembly to be Tested

Objectives of Mechanical Test Test the flag to buss joint for maintenance of preload after cycling. Test contact resistance with changing preload. Test contact resistance with load cycling. Test strength of complete assembly. Determine critical elements of assembly process.

Layout of mechanical testing fixture showing three mounting locations for base of fixture.

Applied Loading for Test F1 Buss Bar (In Clamp) Load Cells (4) Shear Key F3 F2 Joint Under Test

Data Acquisition 2 Hz sample rate. MTS Load Cell and Displacement. Four washer load cells (on flag bolts). Joint resistance (using a 200A source and voltmeter). Joint temperature. Additional instruments as required.

Mechanical Test Plan Cycle flag at expected operating loads based on FEA. Cycle flag at high loads with several moment/shear ratios. Cycle flag temperature. Possible destructive test at FEA based load point.