ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 22 January 2013
Page Count: 9

Compressive Behavior of Square-Cell Titanium Honeycomb

Parsons, Ryan
Kansas State Univ., Dept. of Mechanical and Nuclear Engineering, Manhattan, KS

Frink, Elizabeth
Kansas State Univ., Dept. of Mechanical and Nuclear Engineering, Manhattan, KS

Lease, Kevin
Kansas State Univ., Dept. of Mechanical and Nuclear Engineering, Manhattan, KS

Dubnicka, Suzanne
Kansas State Univ., Dept. of Statistics, Manhattan, KS

(Received 1 December 2011; accepted 31 July 2012)

Abstract

The purpose of this study was to experimentally characterize the compressive behavior of square-cell titanium honeycomb cores according to the American Society of Testing and Materials Standard C365-05. By varying the honeycomb cell size and height, as well as the foil thickness, many configurations of titanium honeycomb were manufactured utilizing a laser welding and expansion method. The test matrix consisted of 1080 compression specimens. The compression specimens were split evenly into stabilized and bare tests. At the conclusion of the characterization, a comprehensive statistical analysis was performed on the data. It was determined that the compressive behavior has a strong dependence on the relative density of the honeycomb. The compressive strength was found to be slightly affected by the presence of a stabilizing face sheet, and largely unaffected by specimen core height. The compressive modulus was affected by both the core height and the presence of a face sheet. The compression behavior of the honeycomb was compared with experimental results of honeycomb from existing publications and found to be consistent.

Keywords:
honeycomb, compressive strength, experimental characterization

Paper ID: JTE20120194
DOI: 10.1520/JTE20120194
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