Results 71 to 80 of about 4,036,042 (259)

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Comparison of Some Physico-Mechanical Nut and Kernel Properties of Two Walnut (Juglans regia L.) Cultivars

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2011
Some physical such as length, width, thickness, mass, geometric mean diameter, sphericity and surface area and mechanical properties such as deformation at cracking, cracking force, energy absorbed and hardness of nuts and kernels were determined at ...
Sezai ERCISLI   +4 more
doaj   +1 more source

Evaluation of Geometric Parameter Effects on Outer Channel Mean Hydraulic Diameter of Pillow-Plate Heat Exchangers

open access: yes
Abstract: The intricate channel geometry in pillow-plate heat exchangers (PPHEs) remains a challenge in obtaining accurate mean hydraulic diameter (MHD) calculations, particularly in the outer channel (OC) formed between two adjacent inner channels (ICs).
Amirhossein Sabourishirazi   +2 more
openaire   +1 more source

Mean weight diameter and geometric mean diameter of water stable aggregate in the rhizosphere of R. pseudoacacia colonized by R. irregularis (RI), G. versiforme (GV) or not (CV).

open access: yes, 2016
Significant differences are indicated by different letters above the column (one-way ANOVA with Fisher’s LSD; P = 0.05; n = 3). MWD, mean weight diameter; GMD, geometric mean diameter. Replicate data is from S1 Dataset.
Zhenkun Liu (2606083)   +3 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

open access: yesAdvanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du   +4 more
wiley   +1 more source

Arithmetic and geometric mean rates of return in discrete time [PDF]

open access: yes
This memorandum presents some basic equalities and inequalities about rates of return in discrete time, without auto-correlation. The arithmetic and geometric means are discussed.
Arie ten Cate
core  

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

open access: yesAdvanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad   +6 more
wiley   +1 more source

Vertical upward flow patterns in small diameter tubes [PDF]

open access: yes, 2005
Two-phase flow patterns were studied in vertical small diameter tubes using R134a as the working fluid. The observed flow patterns include bubbly, dispersed bubble, confined bubble, slug, churn, annular and mist flow.
Chen, L, Tian, YS, Karayiannis, TG
core   +2 more sources

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