Young's modulus

1.1 Definition The terminology “composites” extensively advert to a material system composed of the following: • A discrete constituent ( reinforcement) • A continuous phase(Matrix). Thus, generally a composite can be termed as a material composed of a discrete constituent distributed in a continuous phase and derives its distinguishing characteristics form the properties of the constituents , from the spatial shape and the design of the constituents, and from the properties of the interfaces

The human body is a highly complex system of organs that operates efficiently at a cellular level to ensure proper functionality and longevity of the human race. However, even the slightest changes to its operation can lead to complications. In order to better understand the human body and how it works; an understanding of the diseases it is susceptible to is necessary. The cardiovascular system, in particular, is vulnerable to debilitating disease such as aneurysms, which is a ballooning of a blood

tetrahedral structure similar tantamount to diamond, exhibiting high surface toughness but reduced ductility.56 The relative proportion of the two bonding types is highly dependent on the deposition method and processing parameters.57 Values of Young’s modulus have above 900GPa have been obtained.58 Nuclear magnetic resolution (NMR) and electron energy loss spectroscopy (EELS) are common techniques to characterise the hybridization of DLC films.59 Many potential applications exist due to the unique

constituent is called Reinforcing Phase and the other element which is embedded onto the constitute is called the matrix. The characteristics of composites is the • Specific strength (the strength to weight ratio) • Specific stiffness or specific modulus (the stiffness-to-weight ratio) • Tailored material (since composites are composed of 2 or more phases. They can be formulated to meet the needs of a specific application with considerable required case. CLASSIFICATION OF COMPOSITES In general

Outer layer This layer was modelled as an infinitely long isotropic hollow cylinder with an axial force〖(T〗_3), inside and outside surface pressures〖 (p〗_2) and 〖(p〗_3=0) (Fig.3). Therefore, relying on Boresi et al. (2003) the stress distributions are: "σ" _"r" ^"o" "=" ("p" _"2" "c" _"2" ^"2" "-" "p" _"3" "c" _"3" ^"2" )/("c" _"3" ^"2" "-" "c" _"2" ^"2" ) "-" ("c" _"2" ^"2" "c" _"3" ^"2" "(" "p" _"2" "-" "p" _"3" ")" )/("c" ^"2" "(" "c" _"3" ^"2" "-" "c" _"2" ^"2" ")" ) ","

3.1 Comb Stator design Introduction: MEMS vibratory device requires actuation mechanism for moving the mass structure. Up till now wide range of actuation mechanism were proposed, which includes capacitive, piezoelectric, magnetic. Selection of actuation mechanism totally depends on the ease of application, integration complexity and ability to compact with manufacturing process. After all the choice of mechanism depends on user specified performance and characteristics of the design. Actuators

Synthesis And Testing of AA2014-Al2O3(alpha) Nano Composite Abstract—Al2O3 reinforced Aluminium Matrix Composites give advanced mechanical & physical properties. They have voluminous applications in automobile, aerospace, defense, sports, electronics, bio-medical and other industrial fields. Various manufacturing techniques like stir casting, ultra-sonic assisted casting, compo-casting, powder metallurgy, liquid infiltration are used for the production of the aluminium matrix composites. These composites

in-plane anisotropic behaviour, showing global positive and negative Poisson’s ratio effects under uniaxial tensile loading. The effects of the cell geometry and relative density over the global stiffness, equivalent in-plane Poisson’s ratios and shear modulus of the Voronoi-type structure are evaluated with a parametric analysis. Empirical formulas are identified to reproduce the mechanical trends of the equivalent homogeneous orthotropic material representing the Voronoi-type structure and its geometry

Logging is a method which has been used over a period of time to better understand subsurface parameters and reservoir conditions. The Acoustic or Sonic log is one such method which is used in combination with density and neutron logs in order to determine these parameters. Full-waveform acoustic logging has advanced significantly in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of formations

the energy from one particle to the other thus allowing the velocity of the sound to move slower. SAMPLE COMPUTATION Given: Length of metal rod, Lr = 91.5 cm Average length powder segments, La = 10 cm Temperature of air, t = 26 ­­oC Young’s Modulus of rod, = 9.1 x 1010 Density of the rod, p = 8400 m/s Solution: For Velocity of sound in air, using For Velocity of sound in the rod using equation 3: For Velocity of sound in the rod from textbook: For percentage error of