Results 41 to 50 of about 4,904 (263)

Research and Application of Induction Hardening Technology for Heavy Duty Gear Shafts

open access: yesJixie chuandong, 2022
The effects of induction quenching with different current frequency on the surface hardness, tooth root hardness, tooth core hardness, hardness gradient and metallography of gear shafts are analyzed and discussed by carburizing, tempering and induction ...
Rengui Shi, Ke Zhu, Weilin Zhang
doaj  

Characterization and Selection of Contractile Actuators for Soft Robotics Operating in the Quasistatic Regime

open access: yesAdvanced Intelligent Systems, EarlyView.
We developed methods to characterize soft contractile actuators using force–displacement measurements in the passive state and the total force in the active state and define the operational range of thermal, electrothermal, and pneumatic muscles. A graphical method enables the selection of an actuator based on the required mechanical force–displacement
Qiong Wang   +5 more
wiley   +1 more source

Research of the Variation of Meshing Force of the Plastic Helical Gear and Steel Worm

open access: yesJixie chuandong, 2018
In order to investigate the meshing force of the tooth surface of the plastic helical gear and the steel worm in the transmission process,the mechanical model of the meshing pair of plastic helical gear and steel worm is established by considering the ...
Yun Yonghu, Hu Hong, Ta Jingning
doaj  

Experimental study on mechanical properties of toothed blocks in concrete box girders with new prefabricated reinforcement parts

open access: yesJournal of Engineering and Applied Science
To meet the demands for efficient and high-precision assembly construction of steel reinforcement components in concrete structures, and to address the limitations of steel reinforcement binding methods for concrete box girder structures, two innovative ...
Feng Zhang, Min Wang, Hehui Zheng
doaj   +1 more source

Circling the Archetype: Tensions Limiting the Transformation to a Circular Economy

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This research examines key tensions and the archetypal paradox that prevent the transformation to a circular economy (CE) across individual, organizational, and systems levels, problematizing CE assumptions. Tension manifestations are analyzed using a qualitative case study across eight diverse industries and geographies.
Helleke Heikkinen   +5 more
wiley   +1 more source

Evaluation of Pervaporation and Nanofiltration Membranes for Water Recovery From Thermo‐Responsive Draw Solution

open access: yesChemie Ingenieur Technik, EarlyView.
Integrating thermo‐responsive draw solutions with suitable water‐recovery technologies could enable more efficient hybrid desalination. This study compares pervaporation and nanofiltration, revealing key trade‐offs between water productivity and polymer retention and providing guidance for future FO‐based brine treatment systems.
Nadin Al‐Jariry   +9 more
wiley   +1 more source

Readiness and Maturity for a Smart Circular Economy to Enhance Sustainability Performance: A Multidimensional Framework for the Hospitality Sector

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Research on readiness and maturity for the smart circular economy (SCE) remains fragmented, especially in the hospitality sector. This study develops a multidimensional framework that integrates the principles of the circular economy, Industry 4.0, and sustainability performance in the context of tourist accommodations.
Rafael Mora‐Contreras   +5 more
wiley   +1 more source

硬齿面齿轮的热处理与精加工工艺研究

open access: yesJixie chuandong, 2013
For the features thathardened gear in the gearboxof car require highwear resistance,longer life and lownoise,taking the gear of the 20CrMnTi steel material as a research object,the heat distortion affection on heat treatment process for the 20CrMnTi ...
张国政, 韩江, 刘有余, 周元枝
doaj  

Control of Oxygen Content in 20MnCr5 Gear Steel and Its Effect on Fatigue Performance of Steel

open access: yesTeshugang, 2023
The technological measures to control oxygen content of gear steel in 100 t EAF⁃LF⁃VD⁃CC⁃CR whole process are put forward. The rotary bending fatigue properties, fracture and inclusion size of gear steel 20MnCr5 with oxygen content 0.000 53% ~ 0.001 45 ...
曹红福   +4 more
doaj  

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

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