27 Result(s)
within
Article
Ji** Ma
Engineering
Characterization and Evaluation of Materials
Classical Mechanics
Solid Mechanics
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Article
A Vision-Based Displacement Measurement Method of Wind Turbine Blades in Biaxial Fatigue Testing
This paper introduces a vision-based displacement measurement method for wind turbine blades in biaxial fatigue testing. Instead of relying on existing strain data, this method collects displacement data to co...
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Article
Reconstruction of Metal Defect Images Based on the Sensitivity Matrix of High Conductivity Initial Estimate for Eddy Current Tomography
Eddy current testing is one of the conventional non-destructive testing (NDT) technologies which is widely used in metal defects detection. Defect imaging by eddy current tomography (ECT) has advantages of vis...
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Article
A creep model for salt rock considering damage during creep
Understanding salt rock creep properties is important for designing and operating salt caverns. Triaxial multistage creep test of salt rock and acoustic emission (AE) monitoring were conducted, revealing the i...
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Article
Dynamic modelling strategy of a shaft-disk-blade coupling system integrating beam and shell theories
Despite the remarkable success achieved in modelling the rotor-disk-blade coupling system, the existing research does not adequately consider both the structural flexibility and the rotating effects in the sha...
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Article
A new radial basis function active learning method based on distance constraint for structural reliability analysis
Strongly nonlinear structural systems exhibit high computational errors when dependability is calculated using conventional approaches such as the primary second-order method of moments and the secondary secon...
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Article
Time-dependent behavior of discontinuous biocomposites in soft tissues
Measurement of the strain rate sensitivity of viscoelastic properties is crucial for accurate predictions of the time-dependent behavior of discontinuous biocomposites in soft tissues. The aim of this study is...
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Article
The effect of shrinkage-reducing agents on autogenous shrinkage and drying shrinkage of cement mortar with accelerator
Shotcrete technology is widely used in many fields, including municipal engineering, tunnel engineering and mine engineering. However, due to a large number of cementitious materials, the aggregate has a conti...
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Article
Ultrasonic Water Immersion Nondestructive Testing for Nylon Bars Based on a Multi-Gaussian Beam Model
Nylon is a common engineering plastic that is easy to machine and can serve as a mechanical end-part. Ultrasonic testing is a highly efficient nondestructive testing method for the inspection of nylon material...
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Article
Normal Magnetizing-Based Eddy Current Testing Method for Multidirectional Cracks on Steel Plate Surface Based on Permeability Perturbation
Conventional-magnetizing-based eddy current testing (CMB-ECT) typically applies a direct current (DC) tangential magnetization field parallel to the surface of the steel plate. The interaction between the tang...
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Article
Polygonal multiresolution topology optimization of multi-material structures subjected to dynamic loads
Topology optimization of multi-material structures under dynamic loads is implemented to minimizing compliance on polygonal finite element meshes with multiple volume constraints. A multiresolution scheme is i...
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Article
Microstructure distribution and orientation-structure topology optimization of metallic materials for laser additive manufacturing
The type and distribution of microstructure of metallic materials in laser additive manufacturing have an important influence on the overall mechanical properties, and how to control the location distribution ...
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Article
A statistical damage-based fractional creep model for Beishan granite
A better understanding of the creep behavior of Beishan granite is important to provide guidelines for the design and implementation of nuclear-waste repository facilities. Considering the effect of isotropic ...
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Article
Modeling the temperature-dependent Young’s modulus of short fiber reinforced metal matrix composites and its particle hybrid composites
Knowledge of the temperature-dependent Young’s modulus (TDYM) is fundamentally important for it is a key index to access the deformation-resisting ability over a wide temperature range. In this article, consid...
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Article
A rigid body dynamics simulation enhanced representative volume element builder for CNT/Al composite
A novel representative volume element (RVE) builder is developed to solve the strong “framing effect” problem in previous RVE builders. Taking advantage of rigid body dynamics simulation, the new RVE builder c...
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Article
A topology optimization method for hyperelastic porous structures subject to large deformation
Porous infill, rather than the solids, can provide high stiffness-to-weight ratio, energy absorption, thermal insulation, and many other outstanding properties. However, porous structure design to date have be...
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Article
Mesoscale analysis of rubber particle effect on young’s modulus and creep behaviour of crumb rubber concrete
This paper presents a mesoscale model to investigate the rubber particle effect on the mechanical properties of crumb rubber concrete (CRC). Taking Young’s modulus as an example, the short-term and long-term c...
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Article
Influence of cyclic-loading induced fatigue micro-crack growth on generation of nonlinear ultrasonic Lamb waves
Fatigue damage and micro-cracks growth have been proved to be closely related to the nonlinear effect of ultrasonic Lamb waves propagation in materials. In this paper, the relationship among fatigue life, leng...
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Article
Deformation-based accurate geometric model of stranded wire helical spring
As a kind of cylindrical spring structured with a helically wound strand, the stranded wire helical springs are widely employed as reset components in engineering fields. The accurate description of the spring...
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Article
Nanoindentation creep behavior of RPV’s weld joint at room temperature
SA508 Gr.3 steel has been widely used in nuclear reactor pressure vessels (RPV). Nuclear components are generally combined through arc welding processes, which always produces heterogeneous mechanical properti...
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Article
Quantitative Detection of Shallow Subsurface Defects by Using Mode-Converted Waves in Time-of-Flight Diffraction Technique
An easy-to-implement method based on mode-converted waves was proposed for quantitatively detecting shallow subsurface defects using the ultrasonic time-of-flight diffraction (TOFD) technique. First, an isotro...
