Evaluation of the Adhesive Bonding Processes Used in Helicopter Manufacture. Part I. Durability of Adhesive Bonds Obtained as a Result of Processes Used in the UH-1 Helicopter.
Abstract
The methods used to prepare adherends for components of UH-1 aircraft (prior to bonding) were evaluated for their effect upon the durability of the bonded joint. The phosphate-fluoride method for titanium produces a surface which, when bonded, was 7.5 to 10 times more durable than joints prepared from titanium surfaces that were alkaline cleaned. Upon aging, the surface structure of the phosphate-fluoride treated specimens showed signs of conversion to the less durable structure found on the alkaline-cleaned titanium. The method used to anodize aluminum produced a surface same durability as the bonds using phosphate-fluoride-etched titanium. Bonds to glass-resin-composite adherends are as durable as the composite itself and failures were found to be interlaminar. (Author-PL)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1971
- Accession Number
- AD0732353
Entities
People
- Edward S. Duda
- Marie C. Ross
- Raymond F. Wegman
- Stanley A. Slota
Organizations
- Picatinny Arsenal