Results 51 to 60 of about 188,421 (295)

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

An analytical model for estimating rock strength parameters from small-scale drilling data

Journal of Rock Mechanics and Geotechnical Engineering, 2019
The small-scale drilling technique can be a fast and reliable method to estimate rock strength parameters. It needs to link the operational drilling parameters and strength properties of rock.
Sajjad Kalantari, Alireza Baghbanan, Hamid Hashemalhosseini   +2 more
doaj   +1 more source

An experimental investigation into the borehole drilling and strata characteristics.

PLoS ONE, 2021
Measurement while drilling is an important part of the intelligent development of coal mines. The main purpose of this paper is to comprehensively analyze the response characteristics of borehole drilling parameters and find a better method to predict ...
Cancan Liu, Xigui Zheng, Niaz Muhammad Shahani, Peng Li, Cong Wang, Xiaowei Guo   +5 more
doaj   +1 more source

Experimental research into the effect of some operation factors and rock properties on the rate of penetration [PDF]

, 2020
Purpose. The purpose of this research is to investigate the effect of weight on bit (WOB), rotary speed (RPM), and some rock properties on the rate of penetration (ROP). Methods.
Ali, Mahrous A.M., Boghdady, Gamal Y., Mohamed, Ahmed S., Sayed, Mohamed A., Yassien, Mohamed A.   +4 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Experimental Study on the Hole-Forming Process at the Borehole Bottom During Hot Water Drilling in Ice and Its Influence Mechanisms

Journal of Marine Science and Engineering
Hot water drilling is a drilling method that employs high-temperature and high-pressure hot water jetting to achieve ice melting drilling. Characterized by rapid drilling speed and large hole diameter, it is widely used for drilling observation holes in ...
Zhipeng Deng, Youhong Sun, Xiaopeng Fan, Pavel Talalay, Yifan Yang, Ximu Liu, Da Gong, Bing Li, Ting Wang, Wei Wu, Nan Zhang, Xianzhe Wei   +11 more
doaj   +1 more source

SUBSTANTIATION OF MUD PREPARATION TECHNOLOGY [PDF]

, 2018
To study the advantages of hydrodynamic cavitation, to calculate the frequency of cavitation oscillations by the device parameters, to obtain a formula for determining the dispersion time of the material, and to study the flow of the drilling ...
KAMYSHATSKYI, Oleksandr, KHOMENKO, Volodymyr, KOZHEVNYKOV, Anatolii, NAUMENKO, Mykolai, PASHCHENKO, Oleksandr, RATOV, Boranbai   +5 more
core  

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

Advanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov, Roberta Gabrieli, Avzal Akbarov, Nigora Nigmatova, Bekhzod Khabilov, Alessandro Schiavi, Martin Schwentenwein, Enrica Verné, Francesco Baino   +8 more
wiley   +1 more source

Parameters optimization in deepwater dual-gradient drilling based on downhole separation

Petroleum Exploration and Development, 2019
To ensure safe drilling with narrow pressure margins in deepwater, a new deepwater dual-gradient drilling method based on downhole separation was designed.
Jiangshuai WANG, Jun LI, Gonghui LIU, Tao HUANG, Hongwei YANG   +4 more
doaj   +1 more source

Experimental study on rock cutting characteristics of granite broken by impregnated diamond bit

Jin'gangshi yu moliao moju gongcheng, 2023
The characteristics of rock cuttings are important factors affecting their annulus upward return. The indoor micro drilling experiment was carried out to study the characteristics of rock cuttings produced by impregnated diamond bit breaking granite.
Xin KANG, Long chen DUAN, Weiwei LIU, Songcheng TAN, Dazhao HE   +4 more
doaj   +1 more source