The influence of cyclical environmental exposure on the durability of adhesively bonded titanium
- Virginia Tech., Blacksburg, VA (United States); and others
Bonded systems must be able to withstand a variety of conditions including environmental exposure throughout their lifetime. This is especially important in the aerospace industry where adhesives are used for fastening as well as sealing and insulating. Conditions such as high and low temperatures and high relative humidity may be particularly detrimental to adhesive bonds. Previous durability studies have focused on exposing bonded joints to static environments. This study examines the potential differences in durability when comparing static and cyclical environmental exposure of adhesively bonded titanium. Cyclical tests may more readily simulate actual use exposure conditions for aerospace applications. Base/acid cleaning and chromic acid anodization (CAA) treatments were used to treat the titanium-6Al-4V, and the adherends were bonded with a polyimide adhesive. After static and cyclical environmental exposure tests were conducted, failed samples were characterized via surface sensitive analytical methods.
- OSTI ID:
- 441487
- Report Number(s):
- CONF-960214--
- Country of Publication:
- United States
- Language:
- English
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