Results 31 to 40 of about 1,816 (247)

Optimization of Cutting Parameters for Cotton Stalks Using Reciprocating Bionic Cutters Based on Finite Element Simulation and Experiment

AgriEngineering
Regarding the current issues in Xinjiang, China, during the harvesting of cotton stalks, the lack of specialized, efficient, and durable cutting blades for cotton stalks causes uneven cutting, high power consumption, and short blade life.
Weirong Huang, Jianhua Xie, Silin Cao, Jiahong Tang, Yi Yang   +4 more
doaj   +1 more source

A method of convolutional neural network based on frequency segmentation for monitoring the state of wind turbine blades

Theoretical and Applied Mechanics Letters, 2023
Wind turbine blades are prone to failure due to high tip speed, rain, dust and so on. A surface condition detecting approach based on wind turbine blade aerodynamic noise is proposed.
Weijun Zhu, Yunan Wu, Zhenye Sun, Wenzhong Shen, Guangxing Guo, Jianwei Lin   +5 more
doaj   +1 more source

Design Optimization and Experiment of the Hammer Blade for Straw Crushers

Applied Sciences
To address the low operational efficiency and suboptimal crushing quality of conventional straw crushers, a serrated hammer blade was designed and optimized.
Yutao Wang, Shufeng Tang
doaj   +1 more source

Overview of Follicular Extraction

Indian Journal of Plastic Surgery, 2021
Follicular unit extraction (FUE), now named as follicular unit excision, is one of the methods of harvesting hair follicles from the donor area for implanting in the recipient area.
Anil Garg, Seema Garg
doaj   +1 more source

Experimental acoustic study of small horizontal axis wind turbines based on computational fluid dynamics and artificial intelligence approaches [PDF]

مهندسی مکانیک شریف
In modern wind turbine design, two significant challenges arise: achieving optimal aerodynamic performance while minimizing acoustic noise emissions.
M. Sadeghi malekabadi, A.R. Davari
doaj   +1 more source

A general model for trailing edge serrations simulation on wind turbine airfoils

Theoretical and Applied Mechanics Letters, 2021
Trailing edge serrations (TESs) are capable of noticeably suppressing the turbulent trailing edge noise induced by rotating wind turbine blades and become an integral part of a blade.
Huijing Cao, Mingming Zhang, Yinan Zhang, Teng Zhou   +3 more
doaj   +1 more source

Development and Assessment of a Miniaturized Test Rig for Evaluating Noise Reduction in Serrated Blades Under Turbulent Flow Conditions

Acoustics
The implementation of serrated stator blades in axial compressor and fan stages offers significant advantages, such as enhanced performance and reduced noise levels, making it a practical and cost-effective solution.
Andrei-George Totu, Cristian-Teodor Olariu, Andrei-Tudor Trifu, Andreea-Cătălina Totu, Grigore Cican   +4 more
doaj   +1 more source

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Enhancing Fatigue Crack Growth Resistance in Heterostructured Aluminum Bimetals by Tailored Interface Design

Advanced Engineering Materials, EarlyView.
Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath, Philip Manuel Pohl, Heinz Werner Höppel   +2 more
wiley   +1 more source

Experimental Study on Noise Reduction Characteristics of Slanting Serrated Trailing Edge Blades

Journal of Physics: Conference Series, 2021
Abstract In order to suppress the narrowband tone noise generated by the blunt part at the root of non-flat plate serrated trailing edge, a novel slanting root serrated trailing edge is adopted on NACA65019 blade. The experimental investigation on the aeroacoustic characteristics of the blade with slanting serrated trailing edge is ...
Guoping Li, Zhenlai Ma, Changsheng Chen, Yi Zhang, Qiang Wang, Eryun Chen   +5 more
openaire   +1 more source