Beng-Loon Aw^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.011990

Abstract This study introduces a novel method that combines Binder Jet Printing (BJP) and Selective Laser Melting (SLM) techniques to achieve unprecedented high-speed and high-resolution 3D printing of fine metal powders in Laser Powder Bed Fusion (LPBF). Our approach comfortably attains a resolution of 0.2 mm, enabling the selective deposition of fine powder (D50: 30 µm) made from multiple materials within a single print layer. We demonstrate the capability of this technique through the printing of a composite structure composed of copper alloy and 18Ni300 Maraging tool steel, showcasing its potential for fast-cooling tooling applications. The More >

Huakang Bian^1,3,*, Yufan Zhao^2,3, Akihiko Chiba³

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.012491

Abstract Refining the Si phase in Al‒Si alloy has been a research interest for decades. Previous studies suggested many Al- and Si-enriched nano-segments (approximately 100 nm) can coexist in a melted Al–Si liquid solution when they were reheated to a temperature between 1080 and 1290 °C. These nano-segments could be retained to become crystal nuclei and grew into fine grains under a very fast cooling rate. Thus, this provides a novel approach of refining the microstructure of Al–Si alloy using electron beam melting (EBM) technology because the temperature exceeds 1500 °C in the melting pool with… More >

Yuan Xu^1,*, Govind Gour², Manuela Galati³, Abdollah Saboori³, Antonio Pellegrino⁴

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.013220

Abstract The dynamic behaviour of Ti-6Al-2Sn-4Zr-2Mo additively manufactured by electron beam melting (EBM) is presented in this study considering synchronised tension-torsion loading. A bespoke spilt Hopkinson Tension-Torsion bar is used to generate combined tensile and torsional stress pulses that interact simultaneously with a novel specimen geometry. High-speed digital imaging correlation techniques are employed to assess the high-rate deformation and crack propagation of the specimen. The material's dynamic response was analysed across a spectrum of stress states, including uniaxial tension, shear, and combinations of tension and shear at strain rates ranging between 500 s^-1 and 2000 s^-1. Comparable More >

Qi An^1,*, Lihua Cui¹, Lujun Huang¹, Lin Geng¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.30, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.011973

Abstract Ti-6.5Al-2.5Zr-1Mo-1V alloy is a near α titanium alloy, which has been widely used in aerospace fields due to its low density, high specific strength, good corrosion resistance and high-temperature durability. To further improve the strength and high-temperature durability of Ti-6.5Al-2.5Zr-1Mo-1V complex components, the spherical Ti-6.5Al-2.5Zr-1Mo-1V alloy powder with a particle size of 15~53 μm and TiB2 powder with a particle size of 0.5~1 μm were used to fabricate in-situ TiBw reinforced Ti-6.5Al-2.5Zr-1Mo-1V composites through low energy ball milling and selective laser melting (SLM). The results show that the TiB whiskers are uniformly distributed in the More >

Jupudi Lakshmi Rama Prasad¹, F. Mebarek-Oudina^2,*, G. Dharmaiah³, Putta Babu Rao⁴, H. Vaidya⁵

Frontiers in Heat and Mass Transfer, Vol.22, No.5, pp. 1515-1532, 2024, DOI:10.32604/fhmt.2024.057854 - 30 October 2024

Abstract There is a strong relationship between analytical and numerical heat transfers due to thermodynamically anticipated findings, making thermo-dynamical modeling an effective tool for estimating the ideal melting point of heat transfer. Under certain assumptions, the present study builds a mathematical model of melting heat transport nanofluid flow of chemical reactions and joule heating. Nanofluid flow is described by higher-order partial non-linear differential equations. Incorporating suitable similarity transformations and dimensionless parameters converts these controlling partial differential equations into the non-linear ordinary differential equations and resulting system of nonlinear equations is established. Plotted graphic visualizations in MATLAB More >

Lixiang Dang¹, Yanwen Zeng¹, Wei Duan^1,*, Yan Zhang¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.012173

Abstract In order to regulate the multi-scale structure of Ti-6Al-4V formed by the SLM (selective laser melting) process, this study uses the method of combining numerical simulations with experiments to investigate the effects of SLM process parameters on the phase composition, micro- and meso-structures, and their distribution of Ti-6Al-4V. The study shows that the SLM-formed Ti-6Al-4V is mainly composed of α/α' phases. Horizontally, the specimens at a 0° phase angle mainly show a striped pattern, while the specimens at 67° and 90° phase angles will show a tessellated pattern. Vertically, the specimens at 0°, 67°, and More >

Zhenyu Zhu¹, Ping Zhou¹, Xingbang Wan¹, Zhuo Chen^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.2, pp. 1-4, 2024, DOI:10.32604/icces.2024.011777

Abstract 1 General introduction
The flash smelting is one of the dominant technologies for copper matte production. To meet the increasing demand, the production capability of flash smelting furnace has been increased several times. However, under current conditions, the segregation of concentrate particles becomes an escalating issue, impacting production efficiency and safety [1]. The DEM modelling is a powerful tool for investigating particle behaviors such as contact and collision, but the lack of accurate microscopic properties of copper concentrate particles makes it challenging to conduct reliable DEM simulations [2]. To address this gap, this study employs both… More >

Zhiyong Yang, Enjie Hu, Lei Xi, Zhi Chen^*, Feng Xiong, Chuanhai Zhan

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.4, pp. 705-723, 2024, DOI:10.32604/fdmp.2023.044030 - 28 March 2024

Abstract An experimental investigation into the thermal conductivity of CF-SiC two-phase composite asphalt concrete is presented. The main objective of this study was to verify the possibility of using SiC powder instead of mineral powder as the thermal conductive filler to prepare a new type of asphalt concrete and improve the efficiency of electrothermal snow and ice melting systems accordingly. The thermal conductivity of asphalt concrete prepared with different thermally conductive fillers was tested by a transient plane source method, and the related performances were measured. Then the temperature rise rate and surface temperature were studied More >

Xiaoyu Zhang^1,2, Huizhong Zeng², Shaohui Zhang², Yan Zhang^3,*, Mi Xiao⁴, Liping Liu², Hao Zhou^2,*, Hongyou Chai², Liang Gao⁴

CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 201-220, 2024, DOI:10.32604/cmes.2023.029389 - 22 September 2023

Abstract Lightweight thin-walled structures with lattice infill are widely desired in satellite for their high stiffness-to-weight ratio and superior buckling strength resulting from the sandwich effect. Such structures can be fabricated by metallic additive manufacturing technique, such as selective laser melting (SLM). However, the maximum dimensions of actual structures are usually in a sub-meter scale, which results in restrictions on their appliance in aerospace and other fields. In this work, a meter-scale thin-walled structure with lattice infill is designed for the fuel tank supporting component of the satellite by integrating a self-supporting lattice into the thickness More >

Zhiyong Yang¹, Jiacheng Zhang¹, Henglin Xiao^1,2, Zhi Chen^1,*, Tian Bao¹, Yin Liu¹

FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.9, pp. 2267-2288, 2023, DOI:10.32604/fdmp.2023.028652 - 16 May 2023

Abstract The use of carbon-fiber heating cables (CFHC) to achieve effective melting of snow and ice deposited on roads is a method used worldwide. In this study, tensile and compressive tests have been conducted to analyze the mechanical properties of the CFHC and assess whether the maximum tensile and compressive strengths can meet the pavement design specifications. In order to study the aging produced by multiple cycles of heating and cooling, in particular, the CFHC was repeatedly heated in a cold chamber with an ambient temperature ranging between −20°C and +40°C. Moreover, to evaluate how the More > Graphic Abstract