Chenyu Liang¹, Bo Zeng², Mai Tanaka³, Andrea Kannita Noy¹, Matthew Barrett¹, Erica Hengartner¹, Abygale Cochrane⁴, Laura Garzon¹, Mitchell Litvinov⁵, Dietmar Siemann³, Xin Tang^1,3,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.1, pp. 1-2, 2024, DOI:10.32604/icces.2024.011126

Abstract Cancer accounts for 12.6% of all human deaths worldwide and 90% of cancer-related deaths are due to metastasis: the dissemination of invasive tumor cells from the primary tumors to other vital organs [1-3]. However, how these invasive tumor cells coordinate with each other to achieve the dissemination remains unclear. Recently we discovered that human tumor cells can initiate and transmit previously unknown long-distance (~100s m) intercellular biochemical waves in a microenvironment-mechanics-regulated manner. [4-5] In this presentation, we will present our new results on (1) the 2D/3D spatial-temporal characterization of the long-distance and the intra-/inter-cellular Ca²⁺ signals; More >

Kee-Ahn Lee^1,*, So-Yeon Park¹, Soo-Bin Kim¹, Young-Kyun Kim^1,2

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.012196

Abstract NiCoCr medium-entropy alloys (MEAs) with controlled interstitial C contents were fabricated by using powder bed fusion-type additive manufacturing (AM) process. And the microstructure, mechanical properties, and high temperature oxidation resistance of in-situ carbide-reinforced NiCoCr Medium alloy were investigated. The initial microstructure shows that both AM-built interstitial C-doped MEAs had a heterogeneous grain structure and epitaxial growth grains along the building direction. The analysis of electron channeling contrast images showed a large amount of nano-sized precipitates (in-situ precipitates) distributed at the sub-structure boundaries formed by a dislocation network, and a large number of stacking faults were simultaneously observed inside the sub-structure. A… More >

Zhiheng Hu^1,*, Hang Li Seet¹, Sharon Mui Ling Nai¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.012118

Abstract Heat treatment is a common way for enhancing the mechanical properties of the aluminum alloys. For the alloys developed for laser powder bed fusion, changes in chemical composition, together with the non-equilibrium microstructures resulting from the ultrafast cooling rate during the process, potentially alter the effectiveness of heat treatment. This study investigates the effect of the heat treatments on a Al6xxx alloy fabricated by LPBF. The response to the same heat treatment varies depending on the initial microstructure, and similarly, different heat treatments yield distinct outcomes when applied to the same original microstructures. While there… More >

Chenze Li¹, Manish Jain^1,2, Qian Liu¹, Zhuohan Cao¹, Michael Ferry³, Jamie J. Kruzic¹, Bernd Gludovatz¹, Xiaopeng Li^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-2, 2024, DOI:10.32604/icces.2024.011290

Abstract Laser powder bed fusion (LPBF) additive manufacturing (AM) technology has become a versatile tool for producing new microstructures in metal components, offering novel mechanical properties for different applications. In this work, enhanced ductility (~55% elongation) and tunable mechanical anisotropy (ratio of ductility along vertical to horizontal orientation from ~0.2 to ~1) were achieved for a CoCrNi medium entropy alloy (MEA) by multi-scale synergistic microstructure manipulation (i.e., melt pool boundary, grain morphology and crystallographic texture) through adjusting key LPBF processing parameters (e.g., laser power and scan speed). By increasing the volumetric energy density (VED) from 68.3… More >

Xudong Yang¹, Yifan Wang^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.011275

Abstract Shape-morphing materials present promising avenues for mimicking the adaptive characteristics of biological organisms capable of transitioning between diverse morphologies. However, existing morphing strategies through pre-arranged localized strain and/or cut/fold patterns have a limited range of achievable geometries, and the morphed structures usually have low stiffness due to the intrinsic softness of underlying materials. To overcome these challenges, we are inspired by the inherently non-monolithic architectures in living organisms, e.g., the nacre or bone consisting of stiff building blocks joined by the weak interfaces, which endow creatures ingenious shape-morphing abilities and tunable mechanical properties through collectively… More >

Hang Yang^1,2,3, Wei Zhai³, Ma Li^1,*, Damiano Pasini^2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.010893

Abstract Stimuli-responsive materials can alter their physicochemical properties, e.g., shape, color, or stiffness, upon exposure to an external trigger, e.g., heat, light, or humidity, exhibiting environmental adaptability. Among them, shape memory materials are limited by their multi-shape memory effect and the complex thermomechanical programming. In this work, we harness the distinct temperature-dependent elastic moduli of two 3D-printable polymers, that do not rely upon their intrinsic shape memory effect and compositional alteration to generate robust and simplified multi-shape memory responses in a variety of stimuli-responsive mechanical metamaterials, bypassing the typical intricate programming of conventional multi-shape memory polymers.… More >

Han Wang^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.012843

Abstract Aluminum lattice structures have the advantages of lightweight, high specific strength/stiffness and excellent plasticity, while alumina ceramic lattice structures usually show high strength and significant brittleness. Therefore, alumina/aluminum interpenetrating composites can combine two distinct mechanical properties and show superior performance, which is beneficial to applications in aerospace and military industries. In this study, alumina ceramic lattice structures were prepared by additive manufacturing (AM) and used as infiltration skeleton. The molten aluminum was then infiltrated into alumina ceramic lattice structures. By this method, the alumina/aluminum ordered structure composites were prepared. Through mechanical experiments and finite element More >

Zhoucheng Su^1,*, Dan Wang¹, Yucheng Zhong²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.012259

Abstract In this study, we developed a micromechanical model for exploring the longitudinal tensile behavior of unidirectional discontinuous flax fiber reinforced epoxy composites, emphasizing the significant roles of the aspect ratio of fibers and fiber-matrix interfacial properties. Representative volume elements (RVEs) are built using a novel approach which accounts for the randomness of the fiber distribution, discontinuity of the fibers, and the modeling of the interfaces as cohesive zone elements.
Finite element simulations of the RVEs under longitudinal tension were performed with proper periodic boundary conditions (PBCs). We investigated how fiber aspect ratio, interfacial properties and matrix… More >

Xinwei Li^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.2, pp. 1-2, 2024, DOI:10.32604/icces.2024.011083

Abstract The emergence of 3D printing opens new possibilities for the development of advanced and innovative metamaterials, particularly in the realm of microlattices. Microlattices are characterized as periodic cellular solids with submillimeter-sized features, such as struts, shells, or plates, arranged spatially in a three-dimensional way. Herein, based on four published studies, we provide a perspective on the design, employing analytical and numerical methods, as well as the performance of 3D-printed microlattices for sound absorption.
The first study focuses on face-centered cubic-based plate and truss structures [1]. Impedance tube measurements reveal that all the microlattices display absorption curves… More >

Yuhang Li^1,*, Jin Nan¹, Yang Wang¹, Yafei Yin¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.013412

Abstract As a new type of electronic device, stretchable bio-integrated devices are generally composed of inorganic functional components, stretchable interconnected structures, soft biocompatible substrates and encapsulations, and have wide adaptability to a variety of complex surfaces of soft biological tissues. The small size of functional components, the thin substrate thickness, and poor thermal conductivity can easily lead to thermal burns caused by local temperature concentration in biological tissues. The unique microstructure characteristics and biological thermal characteristics of biological tissues make the heat transfer behavior of integrated devices in biological tissues significantly different from the traditional Fourier… More >