Browse Publications Technical Papers 2001-01-2571
2001-09-10

Orbital Drilling of Sandwich Constructions for Space Applications 2001-01-2571

This paper deals with orbital drilling of sandwich constructions for space applications. Sandwich constructions for space applications are typically made up of thin layers of carbon fiber composite skins separated by an aluminum or carbon honeycomb core. Drilling holes in such structures is required for assembly purposes. A common and significant problem occurs when drilling such structures with conventional methods, namely delamination on the exit side of the composite layers. In this study orbital drilling is investigated as a means of eliminating delaminations and other frequently encountered problems with conventional drilling of laminated composite structures. Holes of different sizes were drilled in sandwich panels using orbital drilling. Both automatic (CNC) and semi-automatic (portable) orbital drilling were investigated. Damage in the vicinity of the holes was assessed by means of microscopic evaluation. It was concluded that orbital drilling effectively eliminated delaminations and other types of damage in the composite skins. In addition other significant advantages of orbital drilling are highlighted in this paper.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Impact of Number of Flutes and Helix Angle on Tool Performance and Hole Quality in Drilling Composite/Titanium Stacks

2011-01-2744

View Details

TECHNICAL PAPER

One Shot - Dry - Drilling of Composites / Aluminium Hybrid Stacked Materials in IT8 Quality

2013-01-2337

View Details

JOURNAL ARTICLE

Axial and Orbital Drilling of Thick Stacks for New Aircraft Assembly Process

2013-01-2226

View Details

X