Results 51 to 60 of about 2,354 (184)

Study of Forces During Ultrasonic Vibration Assisted Grinding

Procedia Engineering, 2016
AbstractRadial and tangential grinding forces were presented as four components connected with workpiece material microcutting and plastic deformation, and friction of cutting and abrasive grains (AGs) with the workpiece.The depth of abrasive grain penetration in the workpiece and the cutting width are determined with regard to ultrasonic vibrations ...
Unyanin, A.N., Khusainov, A.Sh.
openaire   +1 more source

Improved Charge Transport and Device Performance in p‐i‐n Carbon Electrode Perovskite Solar Cells Using SiC‐APTES Additive

Small, EarlyView.
Modification of carbon electrode by mixing silicon carbide nanoparticles functionalized with 3‐aminopropyltriethoxysilane improves the charge transport and device performance of p‐i‐n perovskite solar cells over 18% along with the decreased hysteresis and extended stability.
Mikhail Pylnev, Ryosuke Nishikubo, Tomoya Nakamura, Ryoji Shimomura, Atsushi Wakamiya, Akinori Saeki   +5 more
wiley   +1 more source

Porous Organic Polymers: From Molecular Design to Scalable Technologies

Small, EarlyView.
This review introduces porous organic polymers (POPs) for a wide range of applications, including energy storage, gas adsorption, catalysts, adsorbents, biomedical applications, sensors, and other exciting fields, and critically analyzes the synthesis and modification, and how structural topology influences the composites' architecture of POPs, along ...
Hossein Mashhadimoslem, Hadi Shayesteh, Simindokht Zarei‐Shokat, Rokhsareh Bakhtiari, Sheyda Abedi‐Banaei, Zahra Sheikhlouiharzand, Parnia Mohebimanesh, Seyed Mohammad Amin Ojagh, Bahareh Bakhtiari, Ali Maleki, Theo G. M. van de Ven, Sohrab Zendehboudi, Ali Elkamel   +12 more
wiley   +1 more source

Probabilistic estimation of reliable sensor spacing for wire break detection in prestressed concrete using acoustic emission technique

Structural Concrete, EarlyView.
Abstract The acoustic emission (AE) technique has proven to be an effective method for detecting individual wire breaks in prestressed concrete structures affected by stress corrosion cracking (SCC). However, despite its widespread application, the quantitative assessment of AE monitoring reliability and optimal sensor placement remains unresolved ...
Max Fiedler, Steffen Marx
wiley   +1 more source

Study status and future prospects on ultrasonic assisted grinding of hard and brittle materials

Jin'gangshi yu moliao moju gongcheng, 2020
Hard and brittle materials have some significant characteristics such as high strength, high hardness and low density.However, just because of high hardness and brittleness, great damage and low efficiency are the dramatic problems for these materials ...
DING Kai, LI Qilin, SU Honghua, CHEN Yurong   +3 more
doaj  

Bacterial healing of cracks in metakaolin‐based geopolymer concrete exposed to high temperatures

Structural Concrete, EarlyView.
Abstract This study examined the bacterial healing of metakaolin‐based geopolymer concrete modified with colemanite (K) and red mud (RM) exposed to high temperatures. The metakaolin‐based geopolymer concrete samples modified with 4% K and 6% RM were prepared.
Harun Tanyildizi, Mahmoud Ziada, Mucteba Uysal, Savaş Erdem   +3 more
wiley   +1 more source

The grinding surface characteristics and evaluation of particle-reinforced aluminum silicon carbide

Science and Engineering of Composite Materials, 2016
The changes in grinding parameters have direct influences on the characteristics of surface morphology of workpieces during grinding. On the basis of the application of particle-reinforced aluminum silicon carbide (SiCp/Al), this paper analyzes the ...
Liang Guiqiang, Zhou Xiaoqin, Zhao Feifei   +2 more
doaj   +1 more source

Analysis of Ultrasonic Vibration Belt Grinding Processing Method

IOP Conference Series: Materials Science and Engineering, 2019
Abstract The sand belt abrasive distribution is relatively uniform, the grinding property is good, it is not easy to burn the workpiece. The sand belt grinding process has great flexibility and adaptability, it can be used for grinding of inner and outer circles, plane and complex curved surfaces.
Qingling Wu, Cui Wang, Mingming Cui, Qiang Liu   +3 more
openaire   +1 more source

The Effect of Mechanical Instrumentation on Dental Hard Tissue In Vitro: A Systematic Review

International Journal of Dental Hygiene, EarlyView.
ABSTRACT Objective The aim of this review was to analyse the effects of hand instruments, ultrasonic scalers and air polishing devices on dental hard tissues, focusing on material loss and surface roughness. Methods Electronic databases MEDLINE, EMBASE, and the Cochrane Library were screened for relevant studies.
Katerina Mezquita Prieto Dvorska, Chun Ching Liu, Patrick Schmidlin   +2 more
wiley   +1 more source

Study on Imitating Grinding of Two-Dimensional Ultrasonic Vibration Turning System [PDF]

, 2011
According to turning instead of grinding process requirements and traditional working principle of ultrasonic vibration turning, a new idea of imitating grinding of two-dimensional ultrasonic vibration turning is brought firstly, and the mechanism of two-dimensional ultrasonic vibration turning is elaborated.
Leping Liu, Wen Zhao, Yuan Ma
openaire   +1 more source