Calculation of the moduli of elasticity and tensile strength of oriented glass-reinforced plastics on the basis of a nondestructive determination of their composition and structural parameters

AbstractA theoretical density distribution of the Dumber of bonds per grain as a function of the mean number of bonds per grain is derived from the assumption of randomness and isotropy of grain and grain-bond location and orientation. The knowledge of the theoretical density distribution allows the determination of the effective distribution parameters from section planes or thin sections. The concept of the fundamental unit to describe the strength of snow is introduced. Structural parameters developed on the basis of the fundamental units show improved correlations with the tensile strength.

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Determination of the Mean Number of Bonds per snow grain And of the Dependence of the Tensile Strength of Snow on Stereological Parameters

Journal of Glaciology ◽

10.3189/s0022143000013885 ◽

1978 ◽

Vol 20 (83) ◽

pp. 329-341 ◽

Cited By ~ 3

Author(s):

H. Gubler

Keyword(s):

Tensile Strength ◽

Density Distribution ◽

Structural Parameters ◽

Theoretical Density ◽

Thin Sections ◽

Distribution Parameters ◽

The Mean ◽

Fundamental Units ◽

Effective Distribution

AbstractA theoretical density distribution of the Dumber of bonds per grain as a function of the mean number of bonds per grain is derived from the assumption of randomness and isotropy of grain and grain-bond location and orientation. The knowledge of the theoretical density distribution allows the determination of the effective distribution parameters from section planes or thin sections. The concept of the fundamental unit to describe the strength of snow is introduced. Structural parameters developed on the basis of the fundamental units show improved correlations with the tensile strength.

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A Possible Basis for Nondestructive Characterization of Ropes of Nylon 6

MRS Proceedings ◽

10.1557/proc-503-243 ◽

1997 ◽

Vol 503 ◽

Author(s):

H. Jiang ◽

M. K. Davis ◽

R. K. Eby ◽

P. Arsenovic

Keyword(s):

Tensile Strength ◽

Service Life ◽

Fiber Diameter ◽

Structural Parameters ◽

Crystal Form ◽

Nylon 6 ◽

Remaining Service Life ◽

Nondestructive Characterization ◽

Fractional Content

ABSTRACTPhysical properties and structural parameters have been measured for ropes of nylon 6 as a function of the number of use operations. The fractional content of the α crystal form, sound velocity, birefringence, tensile strength and length all increase systematically and significantly with increasing the number of use operations. The fractional content of the γ crystal form and fiber diameter decrease with use. These trends indicate that the measurement of such properties and structural parameters, especially the length, provide a possible basis for establishing a reliable, rapid, and convenient nondestructive characterization method to predict the remaining service life of nylon 6 ropes.

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