Accession Number:

ADA048030

Title:

Non-Destructive Evaluation of the Degradation of Nylon 6,6 Parachute Materials

Descriptive Note:

Corporate Author:

MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s):

• George, G. A.
• Browne, N. M.

Report Date:

1977-06-01

Pagination or Media Count:

32.0

Abstract:

The changes in mechanical, physical and chemical properties of nylon 6,6 parachute canopy fabric on long term ageing at 80 C are reported. The relationship between strength losses on ageing, fibre morphology, molecular weight and state of oxidation determined by chemical and spectroscopic methods, is explored. The technique of phosphorescence spectroscopy shows the greatest potential for non-destructively determining the strength losses of nylon 6,6 canopy material. A study of canopy material from PX-1 and PB-1 parachutes by this technique indicates that valid conclusions concerning strength losses on storage and use can be drawn from accelerated thermal ageing. Author

Descriptors:

• *PARACHUTE FABRICS
• *NYLON
• NONDESTRUCTIVE TESTING
• DEGRADATION
• CHEMICAL PROPERTIES
• PHYSICAL PROPERTIES
• LONG RANGE(TIME)
• EMISSION SPECTROSCOPY
• STORAGE
• AUSTRALIA
• ACCELERATED TESTING
• THERMAL DEGRADATION
• PARACHUTE CANOPIES
• PHOSPHORESCENCE
• MECHANICAL PROPERTIES
• AGING(MATERIALS)

Subject Categories:

• Textiles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE