NSTX CSU Testing Flex Strap Conductor Initial Material Fatigue Testing.

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Presentation transcript:

NSTX CSU Testing Flex Strap Conductor Initial Material Fatigue Testing

Material ManufacturePMX Industries Manufacture Alloy #151 ASTM SpecificationB747 USN/CDA #C15100 Material Section4” x 0.077” HardnessH04

Manufacture’s Published Material Specifications Hardness:H04 (Hard) Chemistry:Copper (99.8%) Zirconium (0.1%) Density:0.323 lb/in 3 Modulus of Elasticity:17 x 10 6 psi Electrical Conductivity:95% o F Thermal Conductivity:208 Btu/ft-hr- o 68 o F Coef. Therm. Expan.:9.8 x 10 6 in/in- o F Tensile Strength:53-62 Ksi Yield Strength:56 Ksi

Test Samples Specimen SpecificationASTM E 8 Specimen Type Rectangular Tension Specimen Size1/4-in Subsize Material OrientationLongitudinal (six samples) & Transverse (seven samples)

Test Parameters Test MethodPlain-Strain Fracture Toughness Test Spec.ASTM E 399 Load Cycle: –Function:Sin –Rate:1 Hz –Ratio:10% to 100% (R=0.1) # SamplesOrientationPeak StressPeak LoadMax. CyclesTest Time 3transverse55 Ksi~1060 lb10,000~3 hr 3longitudinal55 Ksi~1060 lb10,000~3 hr 3transverse37 Ksi~707 lb100,000~28 Hr 3longitudinal37 Ksi~707 lb100,000~28 hr

Test Procedure Measure and record the dimensions of each sample Measure and record the hardness of each sample Mark sample with gauge length points Configure Test fixture for E399 tension test Configure testing program and verify operation with extra sample Install and tension cycle each sample Record number of cycles to failure or, if no failure, any change in gauge length