Topic
Elastic modulus
About: Elastic modulus is a research topic. Over the lifetime, 33153 publications have been published within this topic receiving 810247 citations.
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TL;DR: In this paper, the authors analyzed mechanical properties and structure of polypropylene fibers with different concentrations of single-wall carbon nanotubes (SWNTs) and draw down ratios (DDR).
201 citations
Journal Article•
TL;DR: The current status of particulate-reinforced titanium matrix composites is reviewed in this paper, where different types of reinforcements are used, together with the alternative processing routes, and the mechanical properties of these composites are influenced by a wide range of factors.
Abstract: The current status of particulate-reinforced titanium matrix composites is reviewed. The different types of reinforcements being used, together with the alternative processing routes, are described. The mechanical properties of these composites are influenced by a wide range of factors. Particulate reinforcements can affect properties by enhancing modulus and strength or by refining the grain size. Mechanical properties such as elastic modulus, low and high temperature strength, fracture toughness and compressive creep are discussed as functions of reinforcement size/shape and volume fraction. The review concludes by underlining the importance of further research in some critical areas to fully realise the industrial potential of these composites.
201 citations
TL;DR: Aqueous dispersions of homoionic sodium montmorillonite have been studied under compressive and decompressive conditions in order to determine the internal pressure of the system as a function of the clay and electrolyte concentrations as mentioned in this paper.
Abstract: Aqueous dispersions of homoionic sodium montmorillonite have been studied under compressive and decompressive conditions in order to determine the internal pressure of the system as a function of the clay and electrolyte concentrations. Complementary measurements were also made of the electrokinetic properties of the montmorillonite particles. Compression of a sodium montmorillonite dispersion from ca. 2 % to ca. 65 % w/w gave a continuous curve of pressure against distance of plate separation up to pressures greater than 100 atmospheres. On subsequent decompression, however, a different curve was obtained and a hysteresis effect was found to occur in the pressure against distance curves. It is considered that the initial curve represents the behaviour of a disordered clay system, i.e., the initial gel, whereas the decompression curve represents the behaviour of a system in which the plates have become ordered into a parallel array. The elastic modulus of the latter system was determined. The results strongly suggest that the gel properties of montmorillonite dispersions are the consequence of long range electrostatic interactions.
201 citations
TL;DR: In this article, the zero-field adiabatic elastic moduli have been measured using a high frequency, 60 to 500 Mc ultrasonic pulse technique using two crystals with sufficiently high conductivity to effectively short the electric field were available for the measurements.
Abstract: New interest in zinc oxide has developed since it has been discovered to be piezoelectric In line with this interest the zero field adiabatic elastic moduli have been measured A high frequency, 60 to 500 Mc ultrasonic pulse technique was employed Two crystals with sufficiently high conductivity to effectively short the electric field were available for the measurementsA density of 5676 g/cm3 was used to calculate the zero-field adiabatic elastic moduli This density was taken as exact with reference to the error limitsThe moduli in units of 1012 dyn/cm2 at 25°C are: c11E = 2097 ±01%, c12E = 1211 ±015%, c13E = 1051 ±015%, c33E = 2109 ±01%, c44E = 04247 ±01%, c66E = 12(c11E−c12E) = 04429±01%
201 citations
TL;DR: In this article, an equivalent material approach is presented for the computation of the elastic properties of brick masonry, where a stacked brick-mortar system consisting of a series of parallel layers which behave elastically is introduced.
200 citations