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Sayadi, Sina (author), Chang, Z. (author), He, S. (author), Schlangen, E. (author), Mihai, I.C. (author), Jefferson, Anthony (author)This paper describes the development of a discrete lattice model for simulating structures formed from self-healing cementitious materials. In particular, a new approach is presented for simulating time dependent mechanical healing in lattice elements. The proposed formulation is designed to simulate the transient damage and healing behaviour...journal article 2023
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Chang, Guobin (author), Qian, N. (author), Bian, Shaofeng (author)Point-mass inversion is widely employed in GRACE level-2 data processing. Conventionally, the spherical harmonic (SH) coefficients are used indirectly: a set of pseudo measurements is generated first using the SH coefficients through SH synthesis; then the point-mass inversion is done with these pseudo measurements. To be statistically optimal,...journal article 2023
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Xiao, Yue (author), Mr. Wu, R.W. (author), Chang, Xi Wen (author), Liu, X. (author), Leng, Zhen (author)Polycyclic Aromatic Hydrocarbons (PAHs) in asphalt materials is a type of serious environmental hazard, and the main pollution resource in road engineering. Aiming at the requirement of PAHs rapid detection method in asphalt pavement construction for low environmental hazard, this research concentrated in experiments about PAHs content,...journal article 2023
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Liang, M. (author), Chang, Z. (author), Zhang, Y. (author), Cheng, H. (author), He, S. (author), Schlangen, E. (author), Šavija, B. (author)This study aims to experimentally investigate the autogenous deformation and the stress evolution in restrained high-volume ground granulated blast furnace slag (GGBFS) concrete. The Temperature Stress Testing Machine (TSTM) and Autogenous Deformation Testing Machine (ADTM) were used to study the macro-scale autogenous deformation and stress...journal article 2023
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Chemical fingerprinting of volatile organic compounds from asphalt binder for quantitative detectionChang, Xiwen (author), Long, Yongshuang (author), Wang, C. (author), Xiao, Yue (author)Asphalt material is an irreplaceable material in road construction. However, it releases VOCs (Volatile Organic Compounds), which do cause pollution to the surrounding environment, during its full life cycle, especially in high-temperature paving stage and summer service time. Asphalt VOCs release mechanism and effective emission reduction...journal article 2023
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Chang, Z. (author), Liang, M. (author), Xu, Y. (author), Wan, Z. (author), Schlangen, E. (author), Šavija, B. (author)In this study, an experimental setup to characterize the early-age creep of 3D printable mortar was proposed. The testing protocol comprises quasi-static compressive loading-unloading cycles, with 180-s holding periods in between. An analytical model based on a double power law was used to predict creep compliance with hardening time and...journal article 2023
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- Chang, J. (author), Esmaeil Zadeh, I.Z. (author) journal article 2023
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Palin, D. (author), Kunitake, Jennie A.M.R. (author), Chang, Marina P. (author), Sutter, Stephan (author), Estroff, Lara A. (author)The production of synthetic crystals with controlled shapes and properties is an enticing prospect, yet, the production of such materials is an ongoing challenge. Here, we present a strategy for chemo-mechanically directing the growth of crystals with non-equilibrium structures using a custom-designed double-diffusion cell. We combine...journal article 2023
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Lopez Rodriguez, B. (author), van der Kolk, R.J.H. (author), Aggarwal, Samarth (author), Sharma, N. (author), Li, Z.Z.L. (author), van der Plaats, D.W. (author), Scholte, T.C. (author), Chang, J. (author), Groeblacher, S. (author), Pereira, S.F. (author), Bhaskaran, Harish (author), Esmaeil Zadeh, I.Z. (author)Integrated photonic platforms have proliferated in recent years, each demonstrating its unique strengths and shortcomings. Given the processing incompatibilities of different platforms, a formidable challenge in the field of integrated photonics still remains for combining the strengths of different optical materials in one hybrid integrated...journal article 2023
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Putra, N.E. (author), Leeflang, M.A. (author), Klimopoulou, M. (author), Dong, J. (author), Taheri, P. (author), Huan, Z. (author), Fratila-Apachitei, E.L. (author), Mol, J.M.C. (author), Chang, J. (author), Zhou, J. (author), Zadpoor, A.A. (author)The development of biodegradable Fe-based bone implants has rapidly progressed in recent years. Most of the challenges encountered in developing such implants have been tackled individually or in combination using additive manufacturing technologies. Yet not all the challenges have been overcome. Herein, we present porous FeMn-akermanite...journal article 2023
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Drouin, Brian J. (author), Nemchick, Deacon J. (author), Nole, Ananda (author), Tang, Adrian (author), Wu, Chung Tse Michael (author), Khiabani, Neda (author), Alonso Del Pino, M. (author), Chang, Mau Chung Frank (author)The exploration of icy body composition in the solar system has often involved spectroscopic measurements of volatiles detected with remote sensing, such measurements portray materials naturally expelled from the surface that enter the exosphere and potentially escape into space. Variations in the ratio of deuterium and hydrogen in these...journal article 2023
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Liang, M. (author), He, S. (author), Gan, Yidong (author), Zhang, Hongzhi (author), Chang, Z. (author), Schlangen, E. (author), Šavija, B. (author)This paper employs computer vision techniques to predict the micromechanical properties (i.e., elastic modulus and hardness) of cement paste based on an input of Backscattered Electron (BSE) images. A dataset comprising 40,000 nanoindentation tests and 40,000 BSE micrographs was built by express nanoindentation test and Scanning Electron...journal article 2023
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Chen, Y. (author), Chang, Z. (author), He, S. (author), Copuroglu, Oguzhan (author), Šavija, B. (author), Schlangen, E. (author)A good bond between the layers of 3D printed cementitious materials is a prerequisite for having high structural rigidity for the printed elements. However, the influence of printing process on an interlayer bond is still not well understood. This study investigates the influence of curing methods (i.e., air curing, plastic film covering, wet...journal article 2022
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Chang, Haoliang (author), Li, L. (author), Huang, Jianxiang (author), Zhang, Qingpeng (author), Chin, Kwai Sang (author)Traffic congestion and accidents take a toll on commuters' daily experiences and society. Locating the venues prone to congestion and accidents and capturing their perception by public members is invaluable for transport policy-makers. However, few previous methods consider user perception toward the accidents and congestion in finding and...journal article 2022
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Liang, M. (author), Chang, Z. (author), He, S. (author), Chen, Y. (author), Gan, Y. (author), Schlangen, E. (author), Šavija, B. (author)Early-age stress (EAS) is an important index for evaluating the early-age cracking risk of concrete. This paper encompasses a thermo-chemo-mechanical (TCM) model and active ensemble learning (AEL) for predicting the EAS evolution. The TCM model provides the data for the AEL model. First, based on Fourier's law, Arrhenius’ equation, and rate...journal article 2022
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Jia, Jinhao (author), Li, Cong (author), Chen, Qiang (author), Bai, Shuxin (author), Chang, J. (author), Xiong, Degan (author), Gao, Mingqi (author), Li, Shun (author), Xiao, Jin (author)3D C<sub>f</sub>/SiC–Al composites were achieved through the pressure infiltration of liquid Al–Si alloy into porous 3D C<sub>f</sub>/SiC preform, which was produced by different cycles of precursor infiltration and pyrolysis. The effect of silicon carbide volume fraction on the microstructure, anisotropic mechanical response, and...journal article 2022
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Hopf, Y.M. (author), Ossenkoppele, B.W. (author), Soozande, M. (author), Noothout, E.C. (author), Chang, Z.Y. (author), Vos, H.J. (author), Bosch, Johan G. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)In this letter, a compact high-voltage (HV) transmit circuit for dense 2-D transducer arrays used in 3-D ultrasonic imaging systems is presented. Stringent area requirements are addressed by a unipolar pulser with embedded transmit/receive switch. Combined with a capacitive HV level shifter, it forms the ultrasonic HV...journal article 2022
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Chang, Z. (author), Liang, M. (author), Xu, Y. (author), Schlangen, E. (author), Šavija, B. (author)This research studies the impact of localized damage and deformed printing geometry on the structural failure of plastic collapse for 3D concrete printing (3DCP) using the lattice model. Two different approaches are utilized for buildability quantification: the (previously developed) load-unload method, which updates and relaxes the printing...journal article 2022
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Dong, J. (author), Lin, P. (author), Putra, N.E. (author), Tümer, N. (author), Leeflang, M.A. (author), Huan, Z. (author), Fratila-Apachitei, E.L. (author), Chang, J. (author), Zadpoor, A.A. (author), Zhou, J. (author)The treatment of femoral nonunion with large segmental bone defect is still challenging. Although magnesium alloys have been considered potential materials for such a treatment, their application is limited by their fast degradation. Adding bioceramic particles into magnesium to form Mg-matrix composites is a promising strategy to adjust...journal article 2022
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Qian, N. (author), Chang, Guobin (author), Gao, Jingxiang (author), Shen, Wenbin (author), Yan, Z. (author)Filtering for GRACE temporal gravity fields is a necessary step before calculating surface mass anomalies. In this study, we propose a new denoising and decorrelation kernel (DDK) filtering scheme called adaptive DDK filter. The involved error covariance matrix (ECM) adopts nothing but the monthly time‐variable released by several data...journal article 2022