68 Result(s)
within
Engineering
Characterization and Evaluation of Materials
**-**a Ding
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Article
Development of viscoplastic constitutive equation through biaxial material testing
Internal-state variables have been used to represent the deformation historyin the recently proposed viscoplastic constitutive equations. In the current study, creep tests under nonproportional loadings were u...
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Article
Viscoplastic flow due to penetration: a free boundary value problem
Under the action of a pressure gradient, a solid body B penetrates into another body. Body B is assumed to be of an incompressible, viscoplastic, Bingham material. As a first model, the problem may be treated one...
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Chapter and Conference Paper
Creep of Metals Under Variable Complex Loadings
In recent years, numerous material models and experimental observations on the inelastic behavior of metals at elevated temperatures have been proposed and reported. Despite their various forms, the models can...
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Article
Transition elements matching the near crack-tip strain field
New transition elements used with the collapsed triangular singular elements are constructed by using the improved isoparametric transformations. Without 1/r singular terms, the new transition elements' strain fi...
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Article
Description of two-dimensional spallation in pure copper
A new ductile dynamic failure model, based on a porous element consisting of a single spherical void of radius a in a sphere of radius b subject to internal pressure Pg and external stress σr = − αP + (α − 1) Pg ...
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Article
A model of plastic flow enhanced crack growth dynamics
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Article
Optimization of the adhesive joint Iosipescu specimen for pure shear test
This paper reviews some of the difficulties encountered in achieving a uniform stress distribution within the adhesive layer of bonded Iosipescu shear test specimens. The asymptotic singular stress field at th...
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Article
A penny-shaped crack in piezoelectrics: resolved
This paper reconsiders the problem of a penny-shaped crack in a piezoelectric medium under uniform mechanical as well as electric loadings applied at infinity (mode I). The analysis is based on the general sol...
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Chapter
Polypropylene Degradation and Durability Estimates Based on the Master Curve Concept
Material degradation and life prediction studies need to overcome numerous challenges. Among the most formidable is the long term, real time data generation. The typical experimental time span seldom goes beyo...
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Chapter and Conference Paper
Modeling of Com-Based Virtual FMS
Virtual flexible manufacturing system(Abbrev. FMS) is composed of NC machining equipment, material handling system and computer control system, which can effectively adjust manufacturing scheme according to va...
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Article
Three-dimensional investigation of thick single-lap bolted joints
Stresses in single-lap bolted joints of thick plates are complex and difficult to analyze. Previous studies involving stresses through the thickness of bolted joints have been limited to finite element method ...
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Article
Modulus, Fracture Strength, and Brittle vs. Plastic Response of the Outer Shell of Arc-grown Multi-walled Carbon Nanotubes
The fracture strengths and elastic moduli of arc-grown multi-walled carbon nanotubes (MWCNTs) were measured by tensile loading inside of a scanning electron microscope (SEM). Eighteen tensile tests were perfor...
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Article
Anti-plane problem of periodic interface cracks in a functionally graded coating-substrate structure
In this paper, the interface cracking between a functionally graded material (FGM) and an elastic substrate is analyzed under antiplane shear loads. Two crack configurations are considered, namely a FGM bonded...
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Article
The energy reflection coefficient of electrorheological fluid with continuously changing acoustic impedance
The electrorheological fluid (ERF), among the complex fluids, is a kind of smart or intelligent material. At the presence of an external electric field, the dispersed particles in ERF suspensions can form orde...
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Article
Optimal design approach for eco-efficient machine tool bed
An optimal design approach of machine tool bed with the aim of obtaining an eco-efficient machine structure is studied. The suggested method includes three phases. The first is the layout design optimization o...
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Article
Mode-I crack problem for functionally graded layered structures
This paper deals with two bonded functionally graded finite strips with two collinear cracks. Different layers may have different nonhomogeneity properties in the structure. A bi-parameter exponential function...
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Article
Study of a Video Image Fire Detection System for Protection of Large Industrial Applications and Atria
This paper presents the results of full-scale fire and environmental tests to study the use of a newly developed video image detection (VID) system for the protection of large industrial applications and atria...
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Article
Study on the Cracking Process of Cement-Based Materials by AC Impedance Method and Ultrasonic Method
By using AC impedance spectroscopy (ACIS), this paper studied the changes of electrochemical parameters of cement paste mixed with fly ash (FA), ground blast furnace slag (GBFS) and silica fume (SF) during the...
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Article
A fractional derivative approach to full creep regions in salt rock
Based on the definition of the constant-viscosity Abel dashpot, a new creep element, referred to as the variable-viscosity Abel dashpot, is proposed to characterize damage growth in salt rock samples during cr...
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Reference Work Entry In depth
Plates of Variable Thickness
