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Outline Test methods to establish durability confidence Lap shear testing, 5 years outdoor results Testing with road mud or salt solutions Environmental fatigue testing Summary / conclusions Date: 2004-01-13 • Page: 4 • Hydro Aluminium
Accelerated lap shear testing A ranking test, only qualitative Only a limited number of parameter can be compared in each matrix Rather complicated, experience required, expensive The ultimate lap shear ageing test does not exist Nevertheless, it simulates the real joint Date: 2004-01-13 • Page: 5 • Hydro Aluminium
Page 1 and 2: Hydro Aluminium Light Metal Surface
Page 3: Introduction Maybe little of a gene
Page 7 and 8: Failure surfaces, after 1 year on t
Page 9 and 10: Main ageing notes Outdoor, wit
Page 11 and 12: Mud weight vs. Relative humidity No
Page 13 and 14: pH values measured for the salt sol
Page 15 and 16: Test conditions Test plates were c
Page 17 and 18: Average weight loss for the differe
Page 19 and 20: Average pit depth after four weeks
Page 21 and 22: Requirements on a corrosion screeni
Page 23 and 24: Salt solutions Salt no. 1 2 3 4 5 6
Page 25 and 26: Tested materials Adhesive Heat c
Page 27 and 28: 5754 passivated, 3 months exposure
Page 29 and 30: Summary, salt solution tests Acidi
Page 31 and 32: Baseline testing, ambient condition
Page 33 and 34: Failure modes (2) Interfacial failu
Page 35 and 36: TEM, Altered layer on etch (2) Long
Page 37 and 38: Summary, environmental fatigue test
Page 39: Conclusion Durable bonded joints r

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