Effect of heterogeneity on the stability of composite cylindrical shells under axial compression.
Heterogeneity effect on multilayer composite cylindrical shell stability under axial compression
Materials Literature
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Thermal oxidation of thermoplastics
Abstract Commercial thermoplastics may be classified by the types of rate curves obtained on thermal oxidation. The rate of oxidation of an acrylonitrile‐butadiene‐styrene plastic is affected by sample thickness and appears to be diffusion‐controlled. Pigmentation increases the reaction rate of this compound in all th…
Seeding of Supercooled Polyethylene with Extended Chain Crystals
Seeding of supercooled polyethylene melt and solution with extended chain single crystals did not markedly decrease the degree of supercooling necessary to initiate crystal growth.induced with these nuclei.An analysis of the first traces of crystal growth allowed some conclusion about nucleation and growth mechanism.I…
Dynamic Flexural Buckling of Rods Within an Axial Plastic Compression Wave
Rods impacting a rigid target at velocities sufficient to produce several percent axial strain are found to buckle plastically with a fairly reproducible wavelength. This phenomenon is investigated for materials which exhibit strain-hardening, a property which is crucial to the theory. The buckling motion is treated a…
Sizes and interfacial free energies of crystallites formed from fractionated linear polyethylene
Abstract Replicas of fracture surfaces of fractions of linear polyethylene, which were crystallized at elevated temperatures for extended time periods, were examined by electron microscopy. Striated. lamella‐type crystallites were observed for all molecular weights over the range 3.2 × 10 3 −5.7 × 10 5 . In agreement…
Oxygen diffusion limitation in autoxidation of polypropylene
Abstract The induction period for the autoxidation of polypropylene increases with increasing sample thickness (from 1 to 75 mils) and with decreasing oxygen pressure. The rate of oxidation shows the opposite dependences. In contrast, neither the rate nor the induction period in well stirred oxidations of squalane is…
The structure of the metamagnetic phase of MnP
The neutron scattering from a single crystal of manganese phosphide has been measured at 4 2 °K. Magnetic scattering was observed in pairs of satellite reflections displaced by ±0.112 c * from the reciprocal lattice points corresponding to nuclear reflections. The positions and intensities of the magnetic reflections…
Dose dependence of F-centre production by fast neutrons in magnesium oxide
Parallel electron spin resonance and optical absorption studies of magnesium oxide irradiated to six different doses in the range 1017 to1019 nvt> 1 mev have made possible a detailed correlation of the F-centre with the optical band centred at 2500 Å. Thermal bleaching experiments at 320°c for periods between 5 min an…
Effect of interaction on the magnetization of single-domain particles
A model is proposed to permit the calculation of the remanence in a magnetic tape that is subject to various magnetizing processes. A combination of a regenerative local field and the Preisach diagram is proposed to account for particle interaction. It is shown that, although the Preisach diagram is not stable, its sh…
Mössbauer Effect Measurement of Intermetallic Compounds in Iron-Tin System : Fe5Sn3 and FeSn
Hyperfine fields for an Fe atom in intermetallic compounds, Fe 5 Sn 3 and FeSn, have been investigated by using the Mössbauer effect. The hyperfine field of Fe 5 Sn 3 with hexagonal B8 2 -type structure is 187kOe on 2(a) sites while that on 2(d) sites has two values, 247kOe and 208kOe, at liquid-air temperature. The B…
A New Route to Boron Nitride
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA New Route to Boron NitrideJ. Economy and R. AndersonCite this: Inorg. Chem. 1966, 5, 6, 989–992Publication Date (Print):June 1, 1966Publication History Published online1 May 2002Published inissue 1 June 1966https://pubs.acs.org/doi/10.1021/ic50040a008https://doi.org/10.102…
Graft copolymers of starch. I. Copolymerization of gelatinized wheat starch with acrylonitrile. Fractionation of copolymer and effect of solvent on copolymer composition
Abstract The starch–polyacrylonitrile graft copolymer prepared from gelatinized wheat starch with ceric ammoninm nitrate as the initiator has been freed of ungrafted polyacrylonitrile and separated into fractions by extraction with dimethylformamide, γ‐butyrolactone, and dimethyl sulfoxide. The copolymer fractions obt…
Structure and physical properties of glow discharge polymers. I. Polymers from hydrocarbons
Abstract The polymers deposited from the vapors of pentane, ethylene, butadiene, benzene, styrene, and naphthalene subjected to glow discharge have been analyzed by infrared absorption techniques. The reaction products show unsaturation, hydrogenation, and branching in the polymer chains. Aromaticity is present only i…
A Mechanism for the Origin of Specifically Oriented Textures in Development with Special Reference to Nitella Wall Texture
Many oriented growth phenomena, including the elongation of the Nitella internode, are based upon oriented or textured cell wall structure. In many cases the ordered textures are not present in the earliest stages of cell development but appear later. In Nitella lateral cell (leaf) development the first appearance of…
Parameter Representation of Low-Temperature Yield Behavior of Body-Centered Cubic Transition Metals
In the low-temperature range, the engineering yield strength of polycrystalline bcc metals can change by a factor of 10 or more with serious consequences appearing in the form of catastrophic brittle fracture. Engineering variables known to have an important effect on the yield behavior are state of stress, temperatur…
INFLUENCE OF CLAY MINERALS ON MICROORGANISMS: I. MONTMORILLONITE AND KAOLINITE ON BACTERIA
Respiration of bacteria was stimulated most by montmorillonite, primarily as the result of this clay maintaining the pH at levels adequate for sustained growth; additional mechanisms also appeared to be involved. Kaolinite and montmorillonite served equally as a source of minerals for bacterial nutrition, and the stim…
The computer and the cement plant
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Quantitative analysis by X ray fluorescence
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Perbunan C in super and infrastructure work
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