FATIGUE TESTING OF HONEYCOMB SANDWICH CONSTRUCTIONS
Abstract
Dynamic methods, developed for determination of Young's modulus for honeycomb sandwich constructions, were successfully applied to obtain honeycomb core fatigue properties. S-N curves for extensional core fatigue were developed for representative samples of brazed, welded, and adhesive bonded honeycomb constructions. For tension - compression, the data show that core density is a dominant parameter in core fatigue. There are indications that core thickness up to and including 1 inch has little effect upon the data; more investigation is ecessary to determine the effect of thickness greater than 1 inch. Feasibility of obtaini g core fatigue using a two specimen shear modulus approach was demonstrated, but more development is necessary in the design of testing systems to obtain dynamic balance and proper load levels. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1962
- Accession Number
- AD0277799