Preliminary results of the effects of sewing, packing and parachute deployment on material strength. [Kevlar and nylon]
Ribbon parachute fabrics were tested during development and production of a 24 ft parachute, and after 2.5 years ambient exposure at several storage sites. The effects of sewing, packing, and parachute deployment on material strength were obtained in the 1000 lb Kevlar ribbon after moisture exposure during packing, and when packed parachutes absorbed moisture or were thermal cycled. Individual yarn samples from the low strength ribbons exhibited little change in strength indicating that the material itself had not degraded. Factors leading to the change in ribbon strength are discussed. Considering all materials, there have been no indications to date of any uncontrollable changes in material strength that would limit the use of Kevlar in parachute applications.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5336008
- Report Number(s):
- SAND-83-1753C; CONF-840496-1; ON: DE84006464
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360600* -- Other Materials
ARAMIDS
COMPARATIVE EVALUATIONS
FABRICATION
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
NYLON
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARACHUTES
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
SYNTHETIC MATERIALS
TENSILE PROPERTIES
TESTING
TEXTILES
USES