Browsing NTNU Open by Author "Zhang, Zhiliang"
Now showing items 1-20 of 136
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A method for determining material's equivalent stress-strain curve with any axisymmetric notched tensile specimens without Bridgman correction
Tu, Shengwen; Ren, Xiaobo; He, Jianying; Zhang, Zhiliang (Journal article, 2017)Large deformation analyses of problems such as plastic forming, ductile fracture with finite element method need a full range of material's equivalent stress-strain curve or flow stress-strain curve. The equivalent ... -
A New Method for Measuring the Ice Adhesion Strength of Anti-Icing Coatings
Vågenes, Elisabeth Tanami (Master thesis, 2014)This work provides a new method for measuring the ice adhesion strength of anti-icing coatings. An extensive literature review was performed to investigate the different means by which other researchers have performed ice ... -
A new method to estimate the residual stresses in additive manufacturing characterized by point heat source
Sun, Li; Ren, Xiaobo; He, Jianying; Olsen, Jim Stian; Pallaspuro, Sakari; Zhang, Zhiliang (Journal article; Peer reviewed, 2019)Residual stress in additive manufacturing (AM) is one of the key challenges in terms of structural integrity and finish quality of printed components. Estimating the residual stress distribution on additively manufactured ... -
A review on wetting and water condensation - perspectives for CO2 condensation
Snustad, Ingrid; Røe, Ingeborg Treu; Brunsvold, Amy; Ervik, Åsmund; He, Jianying; Zhang, Zhiliang (Journal article, 2018)Liquefaction of vapor is a necessary, but energy intensive step in several important process industries. This review identifies possible materials and surface structures for promoting dropwise condensation, known to increase ... -
A SERS Study on the Assembly Behavior of Gold Nanoparticles at Oil/Water Interface
Wang, Mao; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2015)Herein, the assembly behavior of gold nanoparticles (AuNPs) at the oil/water interface is studied by surface-enhanced Raman scattering (SERS) spectroscopy. Two selected chemicals [1-dodecanethiol (DDT) and tetramethylammonium ... -
A special notched tensile specimen to determine the flow stress-strain curve of hardening materials without applying the Bridgman correction
Tu, Shengwen; Ren, Xiaobo; Nyhus, Bård; Akselsen, Odd Magne; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2017)Structural integrity assessment of weldments requires the input of flow stress-strain curve of each individual material zone. To cope with these challenges, a cylindrical cross weld tensile specimen with a notch located ... -
A uniform hydrogen degradation law for high strength steels
Yu, Haiyang; Olsen, Jim Stian; Alvaro, Antonio; Olden, Vigdis; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2016)The degrading effect of hydrogen on high strength steels is well recognized. The hydrogen degradation is dependent not only on hydrogen content, but also on geometric constraints or equivalently, level of stress triaxiality, ... -
Angle-Dependent Photoluminescence Spectroscopy of Solution-Processed Organic Semiconducting Nanobelts
Wang, Mao; Gong, Yi; Alzina, Francesc; Sotomayor Torres, Clivia M.; Li, Hongxiang; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2017)We report an anomalous anisotropy in photoluminescence (PL) from crystalline nanobelt of an organic small-molecule semiconductor, 6,13-dichloropentacene (DCP). Large-area well-aligned DCP nanobelt arrays are readily formed ... -
Anti-Icing and De-Icing of Pipe Structures on Marine Vessels using Waste Heat Recovery - Numerical Simulations and Experimental Testing of Ulmatec Pyro's Double-Pipe Technology
Æsøy, Lene (Master thesis, 2017)Shipping, fishing and exploration activities in Arctic waters are endangered by ice accretion on critical structures causing various safety risks. Ulmatec Pyro have developed an anti-icing/de-icing system using waste heat ... -
Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar
Wang, Xiao Hui; Jacobsen, Stefan; He, Jianying; Zhang, Zhiliang; Lee, Siaw Foon; Lein, Hilde Lea (Journal article; Peer reviewed, 2009)The characteristics of the profiles of elastic modulus and hardness of the steel fiber–matrix and fiber–matrix– aggregate interfacial zones in steel fiber reinforced mortars have been investigated by using nanoindentation ... -
Atomistic dewetting mechanics of Wenzel and monostable Cassie–Baxter states
Xiao, Senbo; Zhang, Zhiliang; He, Jianying (Journal article, 2018)Water adhesion underlies wettabilities, and thus hydrophobicities, and defines surface properties like self-cleaning, icephobicity and many others. The nanomechanics of water adhesion, especially in the dynamic dewetting ... -
Atomistic Insight into Transportation of Nanofluid in Ultra-confined Channel
Wang, Xiao (Doctoral theses at NTNU;2018:334, Doctoral thesis, 2018)Recently, a renewed interest arises in the application of nanofluids, nanoparticles (NPs) contained base fluid, for enhanced oil recovery (EOR) due to the potential of changing the fluid properties, wettability alternation ... -
Atomistic insights into the nanofluid transport through an ultra-confined capillary
Wang, Xiao; Zhang, Zhiliang; Torsæter, Ole; He, Jianying (Journal article; Peer reviewed, 2018)The nanofluids or nanoparticles (NPs) transport in confined channel is of great importance for many biological and industrial processes. In this study, molecular dynamics simulation has been employed to investigate spontaneous ... -
CAFE based Multi-scale Modelling of Ductile-to-Brittle Transition of Steel with a Temperature Dependent Effective Surface Energy
Li, Yang; Shterenlikht, Anton; Ren, Xiaobo; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2019)It is still a challenge to numerically achieve the interactive competition between ductile damage and brittle fracture in ductile-to-brittle transition (DBT) region. In addition, since two types of fracture occur at two ... -
Cement sheath modification using nanomaterials for long-term zonal isolation of oil wells: Review
Jafariesfad, Narjes; Geiker, Mette Rica; Gong, Yi; Skalle, Pål; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2017)Well cementing is an important operation during drilling and completion of oil wells. The cement sheath must maintain well integrity behind the casing and provide long-term zonal isolation to ensure safety and prevent ... -
CO2 Wetting on Pillar-Nanostructured Substrates
Wu, Jianyang; Snustad, Ingrid; Ervik, Åsmund; Brunsvold, Amy; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2020)CO2 capture by dropwise CO2 condensation on cold solid surfaces is a promising technology. Understanding the role of the nanoscale surface and topographical features of CO2 droplet wetting characteristics is of importance ... -
Cohesive zone modelling of anodic dissolution stress corrosion cracking induced by corrosion product films
Chen, Cunguang; Wang, Wenwen; Zhang, Zhiliang; Su, Yanjing; Volinsky, Alex A. (Journal article; Peer reviewed, 2019)Damage mechanics based on the cohesive zone model were applied to study the anodic dissolution stress corrosion cracking (SCC) in flat and U-shaped edge-notched specimens. The simulation results show that corrosion product ... -
Cohesive zone simulation of grain size and misorientation effects on hydrogen embrittlement in nickel
Yu, Haiyang; Olsen, Jim Stian; Olden, Vigdis; Alvaro, Antonio; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2017)The size and misorientation effects on hydrogen embrittlement of a four grain nickel aggregate are studied with the help of hydrogen informed cohesive zone model. The grain misorientation angle is parameterized by fixing ... -
Competitive adsorption and diffusion of CH4/CO2 binary mixture within shale organic nanochannels
Liu, Bing; Qi, Chao; Mai, Tingyi; Zhang, Jun; zhan, kaiyun; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2018)Molecular dynamics simulations were performed to study adsorption and dynamics properties of pure CO2, pure CH4, and their mixtures confined to a graphene nanochannel with width of 3.25 nm at different loadings, temperature ... -
Compression properties of individual micron-sized acrylic particles
He, Jianying; Zhang, Zhiliang; Kristiansen, H (Journal article; Peer reviewed, 2009)Compression behaviours of individual micron-sized acrylic particles have been studied by using a nanoindentation-based method with a flat-end tip, instead of a commonly used sharp tip. The effect of loading rate on the ...