Connecting mesoscopic and macroscopic scale lengths for
... Experimental analysis of wave propagation in micro-porous ceramics (pores ~1µm) showed strong attenuation and cut-off of frequency e.g. (Craciun et al., 1998). A sudden decrease in the velocity at high porosity values was shown but could not be explained in the light of existing macroscopic models o ...
... Experimental analysis of wave propagation in micro-porous ceramics (pores ~1µm) showed strong attenuation and cut-off of frequency e.g. (Craciun et al., 1998). A sudden decrease in the velocity at high porosity values was shown but could not be explained in the light of existing macroscopic models o ...
Stress and Strain
... Deformation implies relative displacement of any two points within the object. The extent of deformation will be dependent upon many factors including the magnitude, direction, and duration of the applied force, the material properties of the object, the geometry of the object, and environmental fac ...
... Deformation implies relative displacement of any two points within the object. The extent of deformation will be dependent upon many factors including the magnitude, direction, and duration of the applied force, the material properties of the object, the geometry of the object, and environmental fac ...
10 - PSU MNE
... Once specimen necking starts, the material fails, because the cross-sectional area in the necked region becomes progressively smaller, and thus no additional load is needed to cause further deformation. The stress at which necking occurs is called the ultimate tensile strength of the material or U ...
... Once specimen necking starts, the material fails, because the cross-sectional area in the necked region becomes progressively smaller, and thus no additional load is needed to cause further deformation. The stress at which necking occurs is called the ultimate tensile strength of the material or U ...
I INTRODUCTION TO MAGNETISM AND MAGNETIC MATERIALS
... These elements are usually referred to as nonmagnetic, whereas those which are referred to as magnetic are actually classified as ferromagnetic. The other type of magnetism observed in pure elements at room temperature is antiferromagnetism. Finally, magnetic materials can also be classified as ferr ...
... These elements are usually referred to as nonmagnetic, whereas those which are referred to as magnetic are actually classified as ferromagnetic. The other type of magnetism observed in pure elements at room temperature is antiferromagnetism. Finally, magnetic materials can also be classified as ferr ...
Ultrasonic Testing
... In ultrasonic testing, the inspector must make a decision about the frequency of the transducer that will be used in order to control the wavelength. The wavelength of the ultrasound used has a significant effect on the probability of detecting a discontinuity. A general rule of thumb is that a disc ...
... In ultrasonic testing, the inspector must make a decision about the frequency of the transducer that will be used in order to control the wavelength. The wavelength of the ultrasound used has a significant effect on the probability of detecting a discontinuity. A general rule of thumb is that a disc ...
Dynamic propagation of a macrocrack interacting with parallel small
... formulation in order to solve problems with discontinuities such as cracks. Peridynamic theory uses displacements rather than displacement derivatives in its formulation. Hence, as opposed to classical continuum mechanics formulation which uses partial differential equations, peridynamic theory is b ...
... formulation in order to solve problems with discontinuities such as cracks. Peridynamic theory uses displacements rather than displacement derivatives in its formulation. Hence, as opposed to classical continuum mechanics formulation which uses partial differential equations, peridynamic theory is b ...
Microwave Absorption by Magnetite: A possible
... Figure 2 shows the results of a detailed calculation of the peak resonance frequency for equant. rect-1 angular parallelipipeds as a function of particle shape. For crystals in which the { 111 } axis is the elongate direction, the anisotropy fields add linearly [Smit and Wijn. 1959, p. 81], yielding ...
... Figure 2 shows the results of a detailed calculation of the peak resonance frequency for equant. rect-1 angular parallelipipeds as a function of particle shape. For crystals in which the { 111 } axis is the elongate direction, the anisotropy fields add linearly [Smit and Wijn. 1959, p. 81], yielding ...
chapter1 - Shodhganga
... commercial ferrite products for telecommunication was in 1945 as a result of the significant contributions of Snoek’s group work (Philips) since 1930s. Kittel formulated theory of domain formation, coercive force and domain wall dynamics [22-c]. The work of Verwey and Heilmann [25] on the distributi ...
... commercial ferrite products for telecommunication was in 1945 as a result of the significant contributions of Snoek’s group work (Philips) since 1930s. Kittel formulated theory of domain formation, coercive force and domain wall dynamics [22-c]. The work of Verwey and Heilmann [25] on the distributi ...
VENUE1，SESSION 1, 9:00 to 11:00，
... also performed to elucidate the mechanism of the enhanced photoresponse. Our results demonstrate that the single-crystalline InAs NWs are very promising candidates for the design of high sensitivity and high-stability nanoscale photodetectors with broad band photoresponse. ...
... also performed to elucidate the mechanism of the enhanced photoresponse. Our results demonstrate that the single-crystalline InAs NWs are very promising candidates for the design of high sensitivity and high-stability nanoscale photodetectors with broad band photoresponse. ...
polymeric materials
... The mechanical properties of polymers generally include low strength and high toughness. Their strength is often improved using reinforced composite structures. Size: Single polymer molecules typically have molcular weights between 10,000 and 1,000,000 g/mol-that can be more than 2000 repeating unit ...
... The mechanical properties of polymers generally include low strength and high toughness. Their strength is often improved using reinforced composite structures. Size: Single polymer molecules typically have molcular weights between 10,000 and 1,000,000 g/mol-that can be more than 2000 repeating unit ...
Introduction to Materials Science and Engineering
... How wrong that prediction was! At the same time, the transistor, the integrated circuit, and television (color and high definition included) were neglected. Thirty years ago, many people would not have believed that some day computers would become a common household item similar to a telephone or a ...
... How wrong that prediction was! At the same time, the transistor, the integrated circuit, and television (color and high definition included) were neglected. Thirty years ago, many people would not have believed that some day computers would become a common household item similar to a telephone or a ...
I=V/R
... Two metal rods (green) placed parallel at a distance d are connected via a resistor R. A blue metal bar is placed over the rods, as shown in the figure and is then pulled to the right with a velocity v. a) what is the induced voltage? b) in what direction does the current flow? And how large i ...
... Two metal rods (green) placed parallel at a distance d are connected via a resistor R. A blue metal bar is placed over the rods, as shown in the figure and is then pulled to the right with a velocity v. a) what is the induced voltage? b) in what direction does the current flow? And how large i ...
Strength of materials
... used to characterize materials. It is defined as the ratio of the uniaxial stress over the uniaxial strain in the range of stress in which Hooke's Law holds. In solid mechanics, the slope of the stress-strain curve at any point is called the tangent modulus. The tangent modulus of the initial, linea ...
... used to characterize materials. It is defined as the ratio of the uniaxial stress over the uniaxial strain in the range of stress in which Hooke's Law holds. In solid mechanics, the slope of the stress-strain curve at any point is called the tangent modulus. The tangent modulus of the initial, linea ...
Ultrasonics - Mitra.ac.in
... •The capacitor C is adjusted so that the frequency of the oscillatory circuit is equal to natural frequency of the rod and thus resonance takes plate. •Now the rod vibrates longitudinally with maximum amplitude and generates ultrasonic waves of high frequency from its ends. ...
... •The capacitor C is adjusted so that the frequency of the oscillatory circuit is equal to natural frequency of the rod and thus resonance takes plate. •Now the rod vibrates longitudinally with maximum amplitude and generates ultrasonic waves of high frequency from its ends. ...
Basic mechanics of metal cutting:
... Metal ahead of the cutting tool is compressed and this results in the deformation or elongation of the crystal structure resulting in a shearing of the metal. As the process continues, the metal above the cutting edge is forced along the “chip-tool” interference zone and is moved away form the work. ...
... Metal ahead of the cutting tool is compressed and this results in the deformation or elongation of the crystal structure resulting in a shearing of the metal. As the process continues, the metal above the cutting edge is forced along the “chip-tool” interference zone and is moved away form the work. ...
FINITE DIFFERENCE TIME DOMAIN MODELING OF LIGHT
... is peculiar to 2D and 3D photonic crystals and it does not occur in 1D periodic structures. The enhancement of light amplification due to a small group velocity can be so explained [6]: since the photon undergoes many multiple reflections at the lattice discontinuities, the optical path length increas ...
... is peculiar to 2D and 3D photonic crystals and it does not occur in 1D periodic structures. The enhancement of light amplification due to a small group velocity can be so explained [6]: since the photon undergoes many multiple reflections at the lattice discontinuities, the optical path length increas ...
selection and evaluation of materials for thermoelectric applications
... it is essentially true that the search for better thermoelectric materials amounts to maximizing ZT, there are nevertheless some other parameters to consider. For example, because both n-type and p-type materials are needed in a thermoelectric device, it is important to be able to prepare two thermo ...
... it is essentially true that the search for better thermoelectric materials amounts to maximizing ZT, there are nevertheless some other parameters to consider. For example, because both n-type and p-type materials are needed in a thermoelectric device, it is important to be able to prepare two thermo ...
Principles of Active Vibration Control
... Piezoelectric materials are materials that produce a voltage when stress is applied. Since, this effect also applies in the reverse manner; a voltage across the sample will produce stress within the sample. The word “piezo” is a Greek word which means “to press”. Therefore, piezoelectricity means el ...
... Piezoelectric materials are materials that produce a voltage when stress is applied. Since, this effect also applies in the reverse manner; a voltage across the sample will produce stress within the sample. The word “piezo” is a Greek word which means “to press”. Therefore, piezoelectricity means el ...
A continuum elastic–plastic model for woven-fabric/polymer
... are concerned with the effects of individual damage mechanisms, such as micro-cracking and non-linear behavior of individual constituents, on the total nonlinear response of the composite. These models are very useful for studying the stress fields in composite materials and the contribution of the be ...
... are concerned with the effects of individual damage mechanisms, such as micro-cracking and non-linear behavior of individual constituents, on the total nonlinear response of the composite. These models are very useful for studying the stress fields in composite materials and the contribution of the be ...
Formation of Barriers to Melt Ascent at the Base of the Ionian
... to be associated with the crystallization peak of clinopyroxene or nepheline. Reducing the resurfacing rate also rises the permeability layer. An extreme minimum of 0.02 cm/yr can raise the barrier up to 10 km in lithospheres thicker than 30 km. Implications: Melt clearly reaches the surface of Io. ...
... to be associated with the crystallization peak of clinopyroxene or nepheline. Reducing the resurfacing rate also rises the permeability layer. An extreme minimum of 0.02 cm/yr can raise the barrier up to 10 km in lithospheres thicker than 30 km. Implications: Melt clearly reaches the surface of Io. ...
luminescence studies of rare earth (europium) doped nano
... ions in different host materials have been extensively studied for several years. Although there are several reports on this subject, in recent years, considerable attention has been focused on submicrometer /nanometer-sized particles doped with RE ions, since it has been shown that a reduction in p ...
... ions in different host materials have been extensively studied for several years. Although there are several reports on this subject, in recent years, considerable attention has been focused on submicrometer /nanometer-sized particles doped with RE ions, since it has been shown that a reduction in p ...
Chapter #3 -- The Structure of Crystalline Solids
... is given in the periodic table. To translate mass from amu to grams we have to divide the atomic weight in amu by the Avogadro number NA = 6.023 × 1023 atoms/mol The volume of the cell, Vc = a3 (FCC and BCC) a = 2R√2 (FCC); a = 4R/√3 (BCC) where R is the atomic radius Thus, the formula for the densi ...
... is given in the periodic table. To translate mass from amu to grams we have to divide the atomic weight in amu by the Avogadro number NA = 6.023 × 1023 atoms/mol The volume of the cell, Vc = a3 (FCC and BCC) a = 2R√2 (FCC); a = 4R/√3 (BCC) where R is the atomic radius Thus, the formula for the densi ...
Non-Traditional Machining
... • Traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. • New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional machining processes ...
... • Traditional machining is mostly based on removal of materials using tools that are harder than the materials themselves. • New and novel materials because of their greatly improved chemical, mechanical and thermal properties are sometimes impossible to machine using traditional machining processes ...
Smart Materials, Precision Sensors/Actuators, Smart Structures, and
... temperature while heating, and the transformation from austenite to martensite occurs at a lower temperature upon cooling. The extent of this hysteresis can be quite significant—30 to 50◦ C for common Ni–Ti SMAs. Material modifications can either decrease the hysteresis to as low as 15◦ C or as high ...
... temperature while heating, and the transformation from austenite to martensite occurs at a lower temperature upon cooling. The extent of this hysteresis can be quite significant—30 to 50◦ C for common Ni–Ti SMAs. Material modifications can either decrease the hysteresis to as low as 15◦ C or as high ...