103 Result(s)
within
Characterization and Evaluation of Materials
Pan **g
Engineering
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Article
Quasi-statically growing crack-tip fields in elastic perfectly plastic pressure-sensitive materials under plane strain conditions
Quasi-statically growing crack-tip fields in elastic perfectly plastic pressure-sensitive materials under plane strain conditions are investigated in this paper. The materials are assumed to follow the Drucker...
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Article
Cavitation Instabilities in Plastics and Rubber-Modified Plastics
Spherical void expansion in plastics and rubber-modified plastics is investigated under radial traction conditions. The plastics are modeled as elastic-plastic pressure-sensitive materials and the rubbers are ...
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Article
A general Boundary Element Analysis of 2-D Linear Elastic Fracture Mechanics
This paper presents a boundary element method (BEM) analysis of linear elastic fracture mechanics in two-dimensional solids. The most outstanding feature of this new analysis is that it is a single-domain meth...
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Article
Reinvestigation of Elastic-Plastic Growth of Mode III Cracks in Power Law Hardening Materials
This work deals with asymptotic analysis of near tip fields for mode III cracks growing quasi-statically in steady in power law hardening materials. In the analysis the stress expansion originally suggested by...
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Article
Comparison of the Temperature Distribution in Isolated Steel Columns Tested in Two Furnaces
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Article
A Curvature-ovalization measurement apparatus for circular tubes under cyclic bending
In this paper, the authors report the design and construction of a new measurement apparatus, along with the result of its testing. This apparatus can be placed at the midspan of the circular tube specimen and...
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Article
Failure loads of spot weld specimens under impact opening and shear loading conditions
Failure loads of spot weld specimens are investigated under impact combined loading conditions. A set of test fixtures was designed and used to obtain failure loads of mild steel spot weld specimens under comb...
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Article
Upper limit of constant strain rates in a split Hopkinson pressure bar experiment with elastic specimens
The upper limit of the achievable constant strain rates in linearly elastic specimens loaded by a split Hopkinson pressure bar is estimated based on the specimen properties and a linear ramp loading. The crite...
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Article
Evaluation of fracture parameters in continuously nonhomogeneous piezoelectric solids
A contour integral method is developed for computation of stress intensity and electric intensity factors for cracks in continuously nonhomogeneous piezoelectric body under a transient dynamic load. It is show...
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Article
Fracture analysis of a penny-shaped magnetically dielectric crack in a magnetoelectroelastic material
In this paper we investigate the magnetoelectroelastic behavior induced by a penny-shaped crack in a magnetoelectroelastic material. The crack is assumed to be magnetically dielectric. A closed-form solution is d...
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Chapter and Conference Paper
Intelligent Non-Destructive Evaluation Expert System for Carbon Fiber Reinforced Plastics Panel Using Infrared Thermography
This research developed a reliable intelligent non-destructive evaluation (NDE) expert system for Carbon Fiber Reinforced Panels (CFRP) panels based on infrared thermography testing (IRT) and post processing b...
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Chapter and Conference Paper
Optimization of Transient Thermography Inspection of Carbon Fiber Reinforced Plastics Panels
Transient thermography non-destructive evaluation methods are being used in aerospace industry to inspect flaws and damages for various composite materials. The purpose of this paper is to establish a set of g...
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Article
Computational assessment of cracks under strain-gradient plasticity
With introducing the strain gradient into plasticity theory, the crack field singularity at the crack tip changes. Characterization of the crack in strain-gradient dependent materials has not found a common co...
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Article
Recent Progress in Digital Image Correlation
In this paper, we report the following important progress recently made in the basic theory and practical implementation of digital image correlation (DIC) for deformation measurement. First, we answer a basic...
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Article
Constitutive Model Calibration for Powder Compaction Using Instrumented Die Testing
Calibration procedures for constitutive models for powder compaction are presented. A practical calibration method based on a die compaction experiment is presented. A newly developed apparatus consisting of a...
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Chapter and Conference Paper
Recent progress in digital image correlation
In this paper, we report the following important progress recently made in the basic theory and implementation of digital image correlation (DIC) for deformation and shape measurement. First, we answer a basic...
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Chapter and Conference Paper
Investigating the thermo-mechanical behavior of clutch facing materials using image processing techniques
The purpose of this paper is to investigate the thermo-mechanical behavior of clutch facing materials using image processing techniques. Infrared thermography and digital image correlation were used to analyze...
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Chapter
Laser Machining and its Associated Effects
Laser machining has a wide range of industrial applications. However, laser energy can cause thermal damage to composite materials during the sha** operation following curing. Such damage leads to poor assem...
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Article
Characterization of Wire Rope Defects with Gray Level Co-occurrence Matrix of Magnetic Flux Leakage Images
Magnetic flux leakage (MFL) techniques are used extensively for non-intrusively detecting and characterizing wire rope defects. Traditionally, MFL signals are captured with induction coil sensors. However, the...
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Article
Digital Image Correlation with Self-Adaptive Gaussian Windows
A novel subpixel registration algorithm with Gaussian windows is put forward for accurate deformation measurement in digital image correlation technique. Based on speckle image quality and potential deformatio...
