effect of fiber concentration and axial ratio on the

Nanocellulose

Nanocellulose is a term referring to nano-structured cellulose This may be either cellulose nanocrystal (CNC or NCC) cellulose nanofibers (CNF) also called nanofibrillated cellulose (NFC) or bacterial nanocellulose which refers to nano-structured cellulose produced by bacteria CNF is a material composed of nanosized cellulose fibrils with a high aspect ratio (length to width ratio)

Strong triaxial coupling and anomalous Poisson effect in

Apr 02 2019The role of fiber reorientation and fiber stretching in the pore size-dependent multiaxial coupling and Poisson effect of fibrous networks (A) The apparent Poisson ratio of fiber networks versus uniaxial stretch at different concentrations of collagen The network pore size was tuned by changing the number of random seed points used to

Effect of Particle and Salt Concentrations on the

レオロジー Rheological properties of cellulose fibrous suspensions were measured with a cone-plate type rheometer Effect of particle concentrations c and salt concentrations of the systems on the properties were studied The flow curve of the fully dialyzed system showed Newtonian flow at a particle concentration of 0 1 wt%

Microwave axial dielectric properties of carbon fiber

Carbon fiber (CF) commercially available since the 1960s has attracted worldwide interest as the reinforcement for the structural electrode electromagnetic shielding and absorbing materials 1 2 3 4 5 Particularly the microwave dielectric properties of composites filled with random CF have received a great deal of attention due to their high permittivity at low concentration and pronounced

Influence of fiber coating and interphase on the design of

gradual built-up of the axial load in the broken fiber until some distance away from the broken tip the far field fiber stress ofx is recovered The ineffective length 6 is defined as the distance from the broken fiber tip within which the axial stress built up in the broken frber mzj has reached a ratio

Theoretical Determination of the Optimal Fiber Volume

In this analysis the effect of stress transfer across the fiber ends which will cause an extra load on both fiber and matrix in this region is neglected because this effect has been considered insignificant (1 1) as long as the fiber aspect ratio l/r 10 Also the influ- ence of stress concentration across the fiber

Theoretical Determination of the Optimal Fiber Volume

In this analysis the effect of stress transfer across the fiber ends which will cause an extra load on both fiber and matrix in this region is neglected because this effect has been considered insignificant (1 1) as long as the fiber aspect ratio l/r 10 Also the influ- ence of stress concentration across the fiber

Rheological properties of cellulose fiber wet webs

Sep 20 2007TATSUMI D ISHIOKA S MATSUMOTO T Effect of fiber concentration and axial ratio on the rheological properties of cellulose fiber suspensions [J] J Soc Rheol 2002 30: 27−32 (in Fig 4 2-dimensional lattice model for Japanese) fiber laminated body [8]

Poisson's ratio in orthotropic materials

May 17 2012A Preliminary Study of Negative Poisson's Ratio of Laminated Fiber Reinforced Composites 18 August 2016 | Journal of Reinforced Plastics and Composites Vol 17 No 18 Calculating the performance of 1–3 piezoelectric composites for hydrophone applications: An

Investigating the effects of fiber surface treatment and

Apr 01 20191 Introduction Carbon fiber reinforced polymer composites (CFRPs) exhibit unique combination of properties such as low density high strength and stiffness corrosion resistance fatigue resistance and controllable anisotropic mechanical properties This combination of properties has led to the utilization of CFRPs in a diverse set of markets such as wind energy aerospace infrastructure

Optimizing Variable

The concept of aligning reinforcing fibers in arbitrary directions offers a new perception of exploiting the anisotropic characteristic of the carbon fiber-reinforced polymer (CFRP) composites Complementary to the design concept of multiaxial composites a laminate reinforced with curvilinear fibers is called variable-axial (also known as variable stiffness and variable angle tow)

Effect of drawing atmosphere on surface characteristics of

Effect of drawing atmosphere on surface characteristics of glass fibers Mfit Akinc the axial length of the nozzle It is possible to obtain the radius of fiber if volume flow rate and linear speed of fiber is known The radius and hence geometrical area of fibers glasses in which surface B-OH concentration is much higher than the bulk

Numerical prediction of the flow property in round

The effects of fiber concentration and fiber aspect-ratio on the mean velocity profile turbulent kinetic energy and turbulent viscosity are analyzed The results show that the mean axial velocity gradient increases near the centerline and decreases near the outside respectively as the fiber concentration

Shear rheology of micro

Aug 16 2016Micro-fibrillar cellulose aqueous suspensions with different fiber lengths were prepared by mechanical refining of softwood pulp fiber suspensions at different specific refining energies Effects of refining energy level micro-fiber concentration and temperature on the rheological properties of these aqueous suspensions were studied These microfibers form a three-dimensional network which

Effect of biaxiality ratio under combined stress on

This paper describes the effect of the biaxially combined stress ratio on the notch factor of the hole-notched composite An equation that can empirically predict the notch factor is proposed The notch factor decreases with an increase of number of cycles in the case of low applied shear stress When the shear component of the applied stress is high slight decreasing of the notch factor is

Introduction to Composite Materials

A fiber has a length that is much greater than its diameter the length-to-diameter (l/d) ratio is known as the aspect ratio and can vary greatly Continuous fibers have long aspect ratios while discontinuous fibers have short aspect ratios Continuous-fiber composites normally have a preferred orientation while discontinuous fibers

Rheological measurement of concentrated pulp fiber

Effects of frequency fiber concentration and beating process on suspension viscoelastic properties are discussed The suspensions at different concentrations are structured in a similar way leading to a weak gel-like structure "Effect of fiber concentration and axial ratio on the rheological properties of cellulose fiber suspensions

Effect of Fiber Concentration and Axial Ratio on the

Effect of Fiber Concentration and Axial Ratio on the Rheological Properties of Cellulose Fiber Suspensions Daisuke Tatsumi 1) Satoshi Ishioka 1) Takayoshi Matsumoto 1) 1) Division of Forest and Biomaterials Science Graduate School of Agriculture Kyoto University

Starch/PCL Composite Nanofibers by Co

Results: The effect of starch ratio in the solution on the properties and morphological structure of the fibers produced was presented With lower starch concentration values the fibers have greater ultimate tensile strength characteristic (mostly 4 and 5 wt%)

Development of Miniaturized Fiber

A miniaturized fiber-optic laser Doppler velocimetry sensor has been developed to measure the local blood velocity in vivo The laser beam emitted from the sensor tip can be focused at any distance between 0 1 and 0 5 mm from the tip Consequently the sensor has a sufficiently high signal-to-noise ratio to measure the local velocity in almost any opaque fluid including blood

Influence of fiber coating and interphase on the design of

gradual built-up of the axial load in the broken fiber until some distance away from the broken tip the far field fiber stress ofx is recovered The ineffective length 6 is defined as the distance from the broken fiber tip within which the axial stress built up in the broken frber mzj has reached a ratio

Investigating the effects of fiber surface treatment and

Apr 01 20191 Introduction Carbon fiber reinforced polymer composites (CFRPs) exhibit unique combination of properties such as low density high strength and stiffness corrosion resistance fatigue resistance and controllable anisotropic mechanical properties This combination of properties has led to the utilization of CFRPs in a diverse set of markets such as wind energy aerospace infrastructure

Microwave axial dielectric properties of carbon fiber

Carbon fiber (CF) commercially available since the 1960s has attracted worldwide interest as the reinforcement for the structural electrode electromagnetic shielding and absorbing materials 1 2 3 4 5 Particularly the microwave dielectric properties of composites filled with random CF have received a great deal of attention due to their high permittivity at low concentration and pronounced

What happens to glass fiber under extreme chemical

1 Introduction Fiber-reinforced polymers (FRPs) have widespread applications in structural automotive and aerospace engineering owing to their high specific stiffness strength and outstanding fatigue performance Glass fiber (GF) a filament made from glass through high-temperature melting and drawing is an inorganic material mainly containing the elements O Si Al Ca and Mg