176 Result(s)
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Characterization and Evaluation of Materials
He** Lin
Article
Engineering
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Article
Adaptive Ultrasonic Imaging Total Focusing Method Based on Covariance Correlation Weighting Factor
Total focusing method imaging is a phased array (PA) post-processing imaging method based on full matrix acquisition data with high resolution and high signal-to-noise ratio. However, the placement of the prob...
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Article
Abnormal Signals Elimination in Hardness Evaluation Using Barkhausen Noise and Tangential Magnetic Field
In this paper, magnetic Barkhausen noise (MBN) and tangential magnetic field (TMF) are employed to quantitatively predict the hardness of bearing steel GCr15. In order to solve the problems that MBN and TMF si...
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Article
Facade Fire Hazards of Bench-Scale Aluminum Composite Panel with Flame-Retardant Core
Façade fires in tall buildings are currently occurring more than once a month globally that are responsible for many casualties and billions of dollars in losses. In particular, the tragic Grenfell Tower fire ...
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Article
Conservation laws for arbitrary objectives with application to fracture resistant design
In this paper, we pose a configurational optimization problem to derive the sensitivity of an arbitrary objective to arbitrary motions of one or more finite-sized heterogeneities inserted into a homogeneous do...
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Article
Incremental FIB-DIC Ring-Core Methods for the Residual Stress Measurement of Bilayer Thin Films
The thin film coating and the microsystem device’s reliability can be strongly affected by residual stress; thus, accurate residual stress measurement in thin films is important.
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Article
Correction to: In‑situ SEM High Strain Rate Testing of Large Diameter Micropillars Followed by TEM and EBSD Postmortem Analysis
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Article
Coupling Self-Adaptive Meshing-Based Regularization and Global Image Correlation for Spatially Heterogeneous Deformation Characterization
Image-based global correlation involves a class of ill-posed inverse problems associated with speckle quality and deformation gradients on specimen surfaces. However, the method used to simultaneously integrat...
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Article
An Inverse Identification Method for the Characterization of Elastic Conforming Contact Behavior During Flat Punch Indentation
The flat punch indentation problem is a typical prototype of conforming contact which can be frequently encountered in many applications. Its characterization is of great difficulty as the interface is embedde...
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Article
Effect of pores on the stress field of high-frequency vibration of TC17 specimen manufactured by laser additive
The pores created in the laser powder additive manufacturing process usually reduced the fatigue strength of TC17 titanium alloy components. In response to this phenomenon, this work combined numerical simulat...
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Article
A Deep Separable Convolutional Neural Network for Multiscale Image-Based Smoke Detection
This paper proposes a multiscale object detection algorithm based on a deep separable convolutional neural network for image-based smoke detection. First, we added a convolution path in the convolution module ...
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Article
Role of defects on the high cycle fatigue behavior of selective laser melted Al–Mg–Sc–Zr alloy
Al–Mg–Sc–Zr alloys manufactured using selective laser melting (SLM) possess outstanding static mechanical properties and thus have great potential application in the aerospace industry. However, their fatigue ...
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Article
Improving Time Resolution of Ultrasonic Signals with Frequency-Domain Sparse Blind Deconvolution (FSBD) Method
The improvement of time resolution is commonly concerned in ultrasonic testing, while the reference signal significantly influences the decoupling and interpretation of multiple overlapped signals. In this pap...
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Article
Two-Dimensional Mean Adaptive Zero-Crossing Factor Weighted Ultrasound Plane Wave Imaging
In this paper, a two-dimensional mean adaptive zero-crossing factor (TMAZF) is proposed to enhance the contrast ratio and resolution of the images generated by coherent plane-wave compounding (CPWC). TMAZF det...
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Article
Application of Laser Deposition to Mechanical Characterization of Advanced High Strength Steels Subject to Non-Proportional Loading
Characterization of hardening and fracture limits of advanced high strength steels (AHSSs) undergoing strain path changes (SPCs) are particularly challenging for plane strain condition, which commonly occurs i...
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Article
Data Anomaly Detection for Bridge SHM Based on CNN Combined with Statistic Features
Structural health monitoring of long-span bridge has received increasing attention in recent years. In order to achieve accurate monitoring, the integrity of data collection should be guaranteed. Unfortunately...
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Article
Correction to: Fatigue fracture characterization by cyclic material forces in viscoelastic solids at small strain
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Article
Open AccessFatigue fracture characterization by cyclic material forces in viscoelastic solids at small strain
The study at hand introduces a new approach to characterize fatigue crack growth in small strain linear viscoelastic solids by configurational mechanics. In this study, Prony series with n-Maxwell elements are us...
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Article
Development of Ignition Time and Mass Loss Rate Prediction Models for Rigid Polyurethane Foam with Multi-Step Thermal Degradation Under Various External Heat Flux Conditions
To predict the ignition time and mass loss rate of rigid polyurethane foam (RPU) under various radiative conditions, numerical models with a multi-step thermal degradation process have been developed based on ...
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Article
Extinction of Wood Fire: A Near-Limit Blue Flame Above Hot Smoldering Surface
Timber is cost-effective and environmentally-friendly, which is a potential material for sustainable buildings, but its fire safety is still a significant concern. In this work, we investigate the burning beha...
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Experimental Study of Sub-critical Velocity in Longitudinally Ventilated Tunnels
The critical velocity is the minimum velocity blowing towards the fire seat in tunnels to reduce the length of back-layering to zero, and it has been extensively adopted in the design of longitudinal smoke con...
