Qingyuan Wang

Sichuan University | SCU · Department of Engineering Science and Mechanics

This paper presents a study on manufacturing a range of hybrid laminated structures made of thermoplastic polyurethan (TPU), glass fibre reinforced plastic (GFRP), styrene-butadiene rubber (SBR) and metal mesh materials, and further on investigating the structural response of the TPU based composite sandwich laminated structures. These laminated st...

To overcome the challenges of limited experimental data and improve the accuracy of empirical formulas, we propose a low-cycle fatigue (LCF) life prediction model for nickel-based superalloys using a data augmentation method. This method utilizes a variational autoencoder (VAE) to generate low-cycle fatigue data and form an augmented dataset. The P...

Components in aero‐engine are likely excited in multiple resonance models in dynamic loads. This paper proposes an accelerated fatigue testing method that combines the vibration test with ultrasonic loading to develop a feasible experimental system for combined cycle fatigue (CCF) and explore the CCF characteristics in the high cycle fatigue (HCF)...

This paper aims to investigate the in-depth relationship between plastic hardening models based on J2 plasticity theory with temperature and strain rate using machine learning methods. A data set related to temperature and strain rate is constructed by randomly generating equivalent plastic strain increments. To replace the conventional process of...

Investigating the dynamic mechanical behavior of single-crystal aluminum oxynitride (AlON) is fascinating and crucial for understanding material performance in relevant applications. Nevertheless, few studies have explored the dynamic mechanical properties of AlON single crystals. In this study, a series of nanoimpact experiments (representative st...

Variable polarization is a key feature of ferroelectrics, and achieving a high strain-polarization response is a critical goal for materials such as ferroelectrics. The strain-polarization response of ferroelectric materials is limited by the intrinsic piezoelectric coefficient e and flexoelectric coefficient f. The surface of ferroelectric materia...

In this work, a three-dimensional crystal-plasticity-based phase-field model considering three kinds of inelastic deformation mechanisms, i.e., martensitic transformation, dislocation slip in austenite, and dislocation slip in martensite, is established to simulate the stress-assisted two-way shape memory effect (SATWSME) of NiTi single crystals an...

Adsorption using biochar is a high-efficient method for removing dyes from wastewater, and it has become a hot research topic in recent years. Biochar produced from organic wastes through pyrolysis is a promising way to combine bioenergy recovery and dye removal. In this study, durian shell (DS) was used as a feedstock for biochar and bio-oil produ...

Accelerating the redox conversion of lithium polysulfides (LiPSs) with electrocatalysts has been regarded as an effective avenue to surmount the shuttle effect and realize high-performance lithium–sulfur (Li–S) batteries. However, the complicated reaction process, especially the real-time evolution of sulfur-containing species and electrocatalysts...

As a typical Aurivillius-type compound, CaBi4Ti4O15 (CBT) is considered a strong competitor among high-temperature piezoelectric materials, but it is difficult to achieve both high piezoelectric activity and a high Curie temperature for CBT. In this work, the method of double-ion co-substituting at different crystalline sites was used to modify the...

This study focuses on investigating the strength recovery of fire-damaged fly ash concrete (FAC) with a low substitution rate of 10% through post-fire curing. The chemical and microstructural changes were analyzed using X-ray diffraction (XRD), derivative thermogravimetry (DTG), scanning electron microscopy (SEM), energy dispersive X-ray spectromet...

Structural color is a remarkable physical phenomenon that exists widely in nature. Unlike traditional color rendering methods, they are realized mainly through micro/nanostructures that interfere, diffract, scatter light, and exhibit long‐life and environmental‐friendly color effects. In nature, a few organisms use their color‐changing system to tr...

The total internal reflection (TIR) behavior of interface shear waves is crucial for ensuring the reliability of dielectric elastomer (DE) devices. However, due to the complex force-electric coupling and large deformation of DEs, the TIR behavior of shear waves in heterogeneous force-electric interface models is still unclear. This study modeled an...

It is well known that coarse-grained super-elastic NiTi shape memory alloys (SMAs) exhibit localized rather than homogeneous martensite transformation (MT), which, however, can be strongly influenced by either internal size (grain size, GS) or the external size (geometric size). The coupled effect of GS and geometric size on the functional properti...

Two-dimensional (2D) multiferroic materials are recognized as promising candidates for next-generation nanodevices due to their tunable magnetoelectric coupling and distinctive physical phenomena. In this study, we proposed a novel 2D multiferroic van der Waals heterostructure (vdWH) by stacking atomic layers of ferroelectric In 2 Se 3 and ferromag...

The study aims to analyze the tensile behavior and microstructural changes in MAR‐M247 nickel‐based superalloy across different temperatures. Tensile behavior is examined under a constant strain rate of 2.5 × 10⁻⁴ s⁻¹ at varying temperatures. Results indicate a temperature‐dependent nature of the alloy's tensile properties. At 550 °C, a Portevin–Le...

Rolling can result in anisotropy in the microstructure and mechanical properties of the sheet material. This study focuses on the very high cycle fatigue (VHCF) performance of magnesium alloys in the rolling direction (RD), normal direction (ND), and the bisecting angle between the ND and RD (ND–RD). The findings reveal that RD specimens demonstrat...

This article predicts bending very high cycle fatigue (VHCF) life of three typical nickel‐based alloys SM2550, BG2532, and G3 used for completion strings. Fatigue tests were conducted on the three alloys using an ultrasonic fatigue system at a frequency of 20 kHz. The results showed that the fatigue strength ranges of the three alloys were markedly...

The microstructure, mechanical properties, and high/very‐high cycle fatigue behaviors of 9Cr3W3Co turbine rotor steel and its welded joint were investigated. The welded nugget zone (WNZ) exhibited the highest microhardness value, followed by the heat‐affected zone (HAZ), while the base material (BM) showed the lowest hardness value. The WNZ exhibit...

Nanoindentation measurements were conducted to investigate the high-cycle response of 316L stainless steel in bending fatigue. Hardness variation owing to the gradient flexure stress amplitude for different curvatures was plotted along with the thickness and length, respectively. Scanning electron microscopy (SEM) was subsequently conducted to expl...

Additive manufacturing (AM) is a transformative approach to fabricating metal components in the industry. However, it is challenging for fusion-based AM to fabricate metallic materials, particularly austenitic stainless steels, which have fine equiaxed grains without the formation of undesirable intermetallic phases due to its intrinsic high therma...

Following publication, concerns relating to the relevance of a number of citations recommend by a peer reviewer were brought to the attention of the Editorial Office [...]

Purpose The purpose of this paper is to determine the ultra-high cycle fatigue behavior and ultra-slow crack propagation behavior of selective laser melting (SLM) AlSi7Mg alloy under as-built conditions. Design/methodology/approach Constant amplitude and two-step variable amplitude fatigue tests were carried out using ultrasonic fatigue equipment....

Weak adsorption of gas reactants and strong binding of intermediates present a significant challenge for most transition metal oxides, particularly in the realm of CO2 photoreduction. Herein, we demonstrate that the adsorption can be fine‐tuned by phase engineering of oxide catalysts. An oxygen vacancy mediated topological phase transition in Ni‐Co...