Accession Number:

ADA455510

Title:

High-Temperature Reusable Shape Memory Polymer Mandrels (Preprint)

Descriptive Note:

Conference paper

Corporate Author:

CORNERSTONE RESEARCH GROUP INC DAYTON OH

Personal Author(s):

• Everhart, Matthew C.
• Knapp, Beth A.

Report Date:

2006-03-01

Pagination or Media Count:

12.0

Abstract:

Cornerstone Research Group, Inc. CRG has demonstrated the feasibility of filament winding complex-curved composite shapes on shape memory polymer SMP mandrels. SMPs can exhibit a radical change from a rigid polymer to a flexible, elastic state, and then back to a rigid state under thermal stimuli. SMP mandrels for filament winding and fiber placement allow for a quick, easy, reusable, and low-cost mandrel system. CRG has recently improved the SMP mandrel technology by adding a high-strain fiber reinforcement HSFR that both raises the toughness of the SMP and allows the SMP to elongate up to 150 percent. The resulting material can produce mandrels durable enough to withstand multiple use in high production rate manufacturing. This paper will demonstrate and discuss the feasibility of HSFR-SMP mandrels for filament winding and fiber placement and recent developments in CRGs SMP mandrel technology, including the fabrication of larger parts.

Descriptors:

• *REUSABLE EQUIPMENT
• *MANDRELS
• *SHAPE MEMORY ALLOYS
• FILAMENT WOUND CONSTRUCTION
• TOOLING
• FIBER REINFORCEMENT
• POLYMERS
• HIGH TEMPERATURE

Subject Categories:

• Plastics
• Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE