Dynamic Young’s Modulus and Internal Friction in a Composite Material at Low Temperatures

Okada, T.; Nishijima, Shigehiro; Matsushita, Kohji; Okamoto, Takuya; Yamaoka, H.; Miyata, Kazushi

doi:10.1007/978-1-4613-9868-4_2

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…The two publications that appeared in 1989: by Maksimovich et al [55] and by Okada et al [56] examined the effect of thermal cycling on the structure of the composite material based on magnesium reinforced with fibers of various types, and performed fatigue tests on Hoxan, a commercially available plastic with a silene finish and an epoxy matrix reinforced with woven fabric for the purpose of determining its viability in superconducting and cryogenic applications, respectively.…”

Section: Fa Tiguejdeforma Tionifracturementioning

confidence: 99%

A Review on Composite Material Failures

Dhillon

1998

Advanced Multilayered and Fibre-Reinforced Composites

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This paper reviews important published literature on composite material failures. The reviewed publications were mainly taken from journals and conference proceedings. The period covered is from 1986 -1996. This literature review concludes that the problem of composite material failures is quite serious and requires a systematic effort. Eventhough, researchers in the area have developed various useful mathematical models and theories, the general approaches are still missing in their strength. IntroductionComposites are made up of a combination of two or more distinct materials and can provide superior and unique mechanical and physical properties because they combine the most desirable properties of their constituents. These constituents could be organic, inorganic, or metallic in the form of fibers, rods, particles, and so on.The interest in producing composite materials is not new, it can be traced back to ancient times to Egyptians, Chinese, and Israelites [1,2]. They all produced bricks by mixing straw with clay and in particular, the Chinese developed the pattern-welding of sabers that involved f

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Section: Fa Tiguejdeforma Tionifracturementioning

confidence: 99%

A Review on Composite Material Failures

Dhillon

1998

Advanced Multilayered and Fibre-Reinforced Composites

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“…al. [2] suggested using Young's modulus and damping as indicators of fatigue damage in glass-reinforced epoxy composites. Their measurements showed strong unimodal temperature dependence for damping, with maximum damping of 0.015 occurring at 250K.…”

Section: Introductionmentioning

confidence: 99%

Material damping experiments at cryogenic temperatures

Levine

White

2003

SPIE Proceedings

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A unique experimental facility has been designed to measure damping of materials at cryogenic temperatures. The test facility pays special attention to removing other sources of damping in the measurement by avoiding frictional interfaces, decoupling the test specimen from the support system, and by using a non-contacting measurement device. Damping data is obtained for materials (Al, GrEp, Be, Fused Quartz), strain amplitudes (< 10 -6 ppm), frequencies (20Hz-330Hz) and temperatures (20K-293K) relevant to future precision optical space missions. The test data shows a significant decrease in viscous damping at cryogenic temperatures and can be as low as 10 -4 %, but the amount of the damping decrease is a function of frequency and material. Contrary to the other materials whose damping monotonically decreased with temperature, damping of Fused Quartz increased substantially at cryo, after reaching a minimum at around 150 o K. The damping is also shown to be insensitive to strain for low strain levels. At room temperatures, the test data correlates well to the analytical predictions of the Zener damping model. Discrepancies at cryogenic temperatures between the model predictions and the test data are observed.

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