An Investigation of Anterior Cruciate Ligament Injuries and Analysis
... The anterior cruciate ligament (ACL) is one of the most important ligaments in the knee and is important for joint stability and knee functionality. ACL injuries are one of the most common knee injuries and it is often a career ending injury for athletes. For the 2013 NFL season, 52 players have suf ...
... The anterior cruciate ligament (ACL) is one of the most important ligaments in the knee and is important for joint stability and knee functionality. ACL injuries are one of the most common knee injuries and it is often a career ending injury for athletes. For the 2013 NFL season, 52 players have suf ...
Anisotropy of Elastic Behavior
... symmetry, but when they form a poly-crystalline aggregate and are randomly oriented, the material is microscopically isotropic. • If the grains forming the poly-crystalline aggregate have preferred orientation, the material is microscopically anisotropic. • Often, material is not completely isotropi ...
... symmetry, but when they form a poly-crystalline aggregate and are randomly oriented, the material is microscopically isotropic. • If the grains forming the poly-crystalline aggregate have preferred orientation, the material is microscopically anisotropic. • Often, material is not completely isotropi ...
Introduction to Continuum Mechanics
... where I is the identity tensor and Q−1 is the inverse of Q. The trace of a linear transformation is a scalar which equals the sum of the diagonal elements of the matrix in Cartesian components, tr A = Aii . We can define the inner product of two tensors A and B by A : B = tr AB T = Aij Bij , and th ...
... where I is the identity tensor and Q−1 is the inverse of Q. The trace of a linear transformation is a scalar which equals the sum of the diagonal elements of the matrix in Cartesian components, tr A = Aii . We can define the inner product of two tensors A and B by A : B = tr AB T = Aij Bij , and th ...
Ab initio modelling of mechanical and elastic properties of solids
... The aim of the thesis is to study mechanical properties of crystalline materials on the basis of density functional theory (DFT) by applying first-principles or ab initio techniques. Mechanical properties of materials are of crucial importance for technological applications. How a material breaks, i ...
... The aim of the thesis is to study mechanical properties of crystalline materials on the basis of density functional theory (DFT) by applying first-principles or ab initio techniques. Mechanical properties of materials are of crucial importance for technological applications. How a material breaks, i ...
A high rate Li-rich layered MNC cathode material for lithium
... and the poor rate capabilities of the CP-MNC material which clearly contrasts with the behavior of the new SIC-NMC presented in Fig. 1a. The redox behavior of SIC-MNC was further investigated by cyclic voltammetry displayed in Fig. 1b. During the rst charging process (1st chg), two dominant peaks a ...
... and the poor rate capabilities of the CP-MNC material which clearly contrasts with the behavior of the new SIC-NMC presented in Fig. 1a. The redox behavior of SIC-MNC was further investigated by cyclic voltammetry displayed in Fig. 1b. During the rst charging process (1st chg), two dominant peaks a ...
Thomson Template - University of North Texas
... If the acceleration due to gravity is the same for all parts of a body, then the center of mass corresponds to the center of gravity. CG =CM if g uniform ...
... If the acceleration due to gravity is the same for all parts of a body, then the center of mass corresponds to the center of gravity. CG =CM if g uniform ...
Comparison between High-Velocity-Air-Fuel- (HVAF) and Cold
... can be found to apply metals, oxides, ceramics, cermets, nitrides, carbides and also polymers [1] for wear and corrosion applications[1]. Every member of the thermal spray family propels more or less molten feedstock-particles towards a prepared surface where the so-called splats quench and rapidly ...
... can be found to apply metals, oxides, ceramics, cermets, nitrides, carbides and also polymers [1] for wear and corrosion applications[1]. Every member of the thermal spray family propels more or less molten feedstock-particles towards a prepared surface where the so-called splats quench and rapidly ...
Principles of Active Vibration Control
... the sensing elements show almost zero deflection. This is the reason why piezoelectric sensors are so rugged, have an extremely high natural frequency and an excellent linearity over a wide amplitude range. Additionally, piezoelectric technology is insensitive to electromagnetic fields and radiation ...
... the sensing elements show almost zero deflection. This is the reason why piezoelectric sensors are so rugged, have an extremely high natural frequency and an excellent linearity over a wide amplitude range. Additionally, piezoelectric technology is insensitive to electromagnetic fields and radiation ...
Constitutive Modeling of Skeletal Muscle Tissue with an Explicit
... the muscle fiber- and sarcomere-associated length scales [3]. Therefore, for the modeling of mechanical behavior, skeletal muscle tissue can be modeled as a continuous and homogenous effective continuum with mathematically-defined properties and symmetry on multiple lengthscale levels. It has been f ...
... the muscle fiber- and sarcomere-associated length scales [3]. Therefore, for the modeling of mechanical behavior, skeletal muscle tissue can be modeled as a continuous and homogenous effective continuum with mathematically-defined properties and symmetry on multiple lengthscale levels. It has been f ...
Bending Stress Measurement System and Procedure for
... presented in this paper performs the computer aided study of the bending stress sensor. This experimental system is very useful for engineering undergraduates because they can test the theoretical knowledge about measurement techniques, sensors and transducers, signal conditioning circuits, data acq ...
... presented in this paper performs the computer aided study of the bending stress sensor. This experimental system is very useful for engineering undergraduates because they can test the theoretical knowledge about measurement techniques, sensors and transducers, signal conditioning circuits, data acq ...
Stress relaxation behaviour in compression and some other
... The term" POLYMER" is taken as synonymous with the term "PLASTIC" but in fact there is a distinction. The polymer is the pure material which results from the process of polymerisation and usually taken as family name for material that have long chain molecules. The term plastic is applied when addit ...
... The term" POLYMER" is taken as synonymous with the term "PLASTIC" but in fact there is a distinction. The polymer is the pure material which results from the process of polymerisation and usually taken as family name for material that have long chain molecules. The term plastic is applied when addit ...
Operator Generic Fundamentals Material Science
... – Making a complete circuit shows a slip pattern similar in shape to a screw thread, whether left- or right-handed • To happen, requires some of the atomic bonds to re-form continuously after yielding to return the crystal to its original form ...
... – Making a complete circuit shows a slip pattern similar in shape to a screw thread, whether left- or right-handed • To happen, requires some of the atomic bonds to re-form continuously after yielding to return the crystal to its original form ...
EFFECT OF CRYSTALLINITY ON THE IMPACT
... bulk form have made them candidate materials for many potential structural applications wherein their unique mechanical properties can be exploited. While a number of glass-forming systems have been investigated for their mechanical properties and micromechanisms of failure, Zr-based alloys (Zr± Ti± ...
... bulk form have made them candidate materials for many potential structural applications wherein their unique mechanical properties can be exploited. While a number of glass-forming systems have been investigated for their mechanical properties and micromechanisms of failure, Zr-based alloys (Zr± Ti± ...
View - OhioLINK Electronic Theses and Dissertations Center
... (Thermoplastic Vulcanizates); a highly anisotropic model for soft biological tissues and a material model capturing softening for damage/failure mode localization studies. To this end, and considering the complexity of large deformations the very marked differences in the response character of thes ...
... (Thermoplastic Vulcanizates); a highly anisotropic model for soft biological tissues and a material model capturing softening for damage/failure mode localization studies. To this end, and considering the complexity of large deformations the very marked differences in the response character of thes ...
Angustifolia NSR-10, Title G.12 Kunth
... the structural analysis of each structure was done. In the current code only the elastic module, and allowable stresses to the way fibers are oriented are specified. This condition makes impossible that the material could be shaped for its real conditions like its orthotropic condition. This situat ...
... the structural analysis of each structure was done. In the current code only the elastic module, and allowable stresses to the way fibers are oriented are specified. This condition makes impossible that the material could be shaped for its real conditions like its orthotropic condition. This situat ...
Acta Materialia_60_16_2012
... Hall-Petch effect of increasing strength with decrease in grain size [2-4], formation of Lüders bands [4], nucleation of deformation twins [5-7], cracks in fracture [7-9] and fatigue [10, 11], in the propagation of short fatigue cracks [12, 13] and in many more phenomena [14-16]. The configuration o ...
... Hall-Petch effect of increasing strength with decrease in grain size [2-4], formation of Lüders bands [4], nucleation of deformation twins [5-7], cracks in fracture [7-9] and fatigue [10, 11], in the propagation of short fatigue cracks [12, 13] and in many more phenomena [14-16]. The configuration o ...
potential of carnuba wax in ameliorating brittle fracture during tableting
... crack theory of Griffiths considered that cracks will propagate from the edge of a void or low density region in a compact when the stress at the edge of the void is three times over the stress in the bulk of the compact. On this basis, the brittle fracture index (BFI) was given by Hiestand et al (1 ...
... crack theory of Griffiths considered that cracks will propagate from the edge of a void or low density region in a compact when the stress at the edge of the void is three times over the stress in the bulk of the compact. On this basis, the brittle fracture index (BFI) was given by Hiestand et al (1 ...
analysis of adhesion characteristics of liner dental materials
... that this method can be used as an alternative to adhesiveness definition by measuring the breaking force. As far as the tested materials are concerned, we could analyse results for aqua ionobond ionoseal, life and cegal NV. Aqua ionobond and ionoseal are acceptable from the adhesiveness aspect, but ...
... that this method can be used as an alternative to adhesiveness definition by measuring the breaking force. As far as the tested materials are concerned, we could analyse results for aqua ionobond ionoseal, life and cegal NV. Aqua ionobond and ionoseal are acceptable from the adhesiveness aspect, but ...
Ultramid®, Ultradur® and Ultraform® – Resistance to
... The environmental conditions for a component are essentially defined by the physical factors of temperature and pressure as well as by the chemical nature of the ambient medium. An ambient medium is fundamentally defined by its chemical composition. In fact, technical fluids often consist of one or ...
... The environmental conditions for a component are essentially defined by the physical factors of temperature and pressure as well as by the chemical nature of the ambient medium. An ambient medium is fundamentally defined by its chemical composition. In fact, technical fluids often consist of one or ...
Module 8
... and we are going to indicate surface forces by the vector t. As I said, later we will be using t to indicate something else, but for right now just think of that vector t as the surface force exerted on some element. That force does not have to be normal to the element, and it does not have to be ta ...
... and we are going to indicate surface forces by the vector t. As I said, later we will be using t to indicate something else, but for right now just think of that vector t as the surface force exerted on some element. That force does not have to be normal to the element, and it does not have to be ta ...
Bolted Joint Design
... ultimate tensile strength of the bolt is typically used as acceptable shear strength. Note: the shear strength must fall within the constraints of a suitable safety factor. This formula should only be used as an estimation. A fastener subjected to repeated cyclic loads can break suddenly and unexpec ...
... ultimate tensile strength of the bolt is typically used as acceptable shear strength. Note: the shear strength must fall within the constraints of a suitable safety factor. This formula should only be used as an estimation. A fastener subjected to repeated cyclic loads can break suddenly and unexpec ...
Connecting mesoscopic and macroscopic scale lengths for
... Probably scattering losses were more important than adsorption losses for those materials. Similarly, higher harmonic generation was used to capture material degradation by assuming non-linear stress-strain law σ = E ε (1 + βε + …) e.g. (Jhang and Kim, 1999), E being the Young’s elastic modulus. The ...
... Probably scattering losses were more important than adsorption losses for those materials. Similarly, higher harmonic generation was used to capture material degradation by assuming non-linear stress-strain law σ = E ε (1 + βε + …) e.g. (Jhang and Kim, 1999), E being the Young’s elastic modulus. The ...
ultrasound action on strength properties of polycrystalline metals
... One of the underlying principles in materials science is that properties can be deduced from knowledge of the microstructure. By microstructure we mean the crystalline structure and all imperfections, including their size, shape, orientation, composition, spatial distribution etc. In the cast of pol ...
... One of the underlying principles in materials science is that properties can be deduced from knowledge of the microstructure. By microstructure we mean the crystalline structure and all imperfections, including their size, shape, orientation, composition, spatial distribution etc. In the cast of pol ...
Fracture toughness and tensile properties of the titanium
... Table 2: Experimental Matrix: The tensile and Charpy specimens were tested at 150°C. Specimens tested at room temperature are indexed RT. The Charpy specimens pre-cracked at high frequency are indexed PC. They have been pre-cracked before the irradiation and experiments. The other specimens were pre ...
... Table 2: Experimental Matrix: The tensile and Charpy specimens were tested at 150°C. Specimens tested at room temperature are indexed RT. The Charpy specimens pre-cracked at high frequency are indexed PC. They have been pre-cracked before the irradiation and experiments. The other specimens were pre ...
Sora to Sora No.50
... thrust and weight, the structure of an aircraft is subjected to large forces, such as pressurization loading. The aircraft must have a lightweight construction while maintaining the strength and rigidity to withstand these forces. In order to realize this basic design, it is very important to know h ...
... thrust and weight, the structure of an aircraft is subjected to large forces, such as pressurization loading. The aircraft must have a lightweight construction while maintaining the strength and rigidity to withstand these forces. In order to realize this basic design, it is very important to know h ...
Fatigue (material)
In materials science, fatigue is the weakening of a material caused by repeatedly applied loads. It is the progressive and localized structural damage that occurs when a material is subjected to cyclic loading. The nominal maximum stress values that cause such damage may be much less than the strength of the material typically quoted as the ultimate tensile stress limit, or the yield stress limit.Fatigue occurs when a material is subjected to repeated loading and unloading. If the loads are above a certain threshold, microscopic cracks will begin to form at the stress concentrators such as the surface, persistent slip bands (PSBs), and grain interfaces. Eventually a crack will reach a critical size, the crack will propagate suddenly, and the structure will fracture. The shape of the structure will significantly affect the fatigue life; square holes or sharp corners will lead to elevated local stresses where fatigue cracks can initiate. Round holes and smooth transitions or fillets will therefore increase the fatigue strength of the structure.