Mechanical and thermal properties of glass-fiber-reinforced composities at cryogenic temperatures
Khalil and Han investigate, in this study, materials that are capable of being used in struts for large superconducting energy storage magnets. The candidate matrials that poses the requisite high strength-to-weight ratios and low thermal conductivities are fiberglass-epoxy and polyester composites. This investigation focuses on fiberglass-epoxy composites (G-10CR), on polyester fiberglass (Extren), and on glass-fiber-wound epoxy composite tubes (GFW AT-1008). The mechanical properties tested were the compressive strength, eslastic modulus, fatigue, and fracture behavior at 300 K and at 77 K. thermal conductivity, heat diffusivity, and specific heat were also tested in the temperature range of 4-300 K. Specifications for the samples, the test equipment, and the procedures are given, along with tables and photographs of the results. Calculation methods for various properties are described. A comparative evaluation of the materials is discussed.
- Research Organization:
- University of Wisconsin, Madison, WI
- OSTI ID:
- 6237652
- Journal Information:
- Adv. Cryog. Eng.; (United States), Vol. 28
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPOSITE MATERIALS
MECHANICAL PROPERTIES
SPECIFIC HEAT
THERMAL CONDUCTIVITY
REINFORCED MATERIALS
FIBERGLASS
POLYESTERS
CRYOGENICS
LOW TEMPERATURE
MATERIALS TESTING
SUPERCONDUCTING MAGNETS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
ESTERS
MAGNETS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLYMERS
SUPERCONDUCTING DEVICES
TESTING
THERMODYNAMIC PROPERTIES
360300* - Composite Materials- (-1987)
420201 - Engineering- Cryogenic Equipment & Devices