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Yulong Chen, Qingxiang Meng and Jianwei Zhang
This study focused on the effects of the notch angle, notch length, and injection rate on hydraulic fracturing. True triaxial hydraulic fracturing experiments were conducted with 300 × 300 × 300 mm cement mortar blocks. The test results showed that the f...
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Yulong Chen, Qingxiang Meng and Jianwei Zhang
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Xiaoqing Lu and Guanxi Yan
Most semi-circular bend (SCB) tests on concrete have been conducted with a pre-crack with a straight-through tip, thereby undermining the determination of the tensile fracture toughness (KIc). Therefore, the present study involved mixed-mode (tensile?she...
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Stefano Mummolo, Gianni Gallusi, Enrico M. Strappa, Filippo Grilli, Antronella Mattei, Fabiana Fiasca, Fabrizio Bambini and Lucia Memè
This retrospective study aimed to evaluate a possible correlation between the characteristics of the mandibular ramus and lower third molar impaction by comparing a group of subjects with an impacted lower third molar and a second group with normal erupt...
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Yan Dong, Guanglei Ji, Lin Fang and Xin Liu
During the service life of offshore pipelines, many start-up and shut-down cycles take place, possibly leading to significant cyclic loads. Fatigue failure may occur, resulting in serious environmental pollution and loss of property. The study aims to as...
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Qingzhen Zhu, Hengyuan Zhang, Zhihao Zhu, Yuanyuan Gao and Liping Chen
To improve the consistency of sectional gas velocities in different rows in the pneumatic conveying line for a paddy side-deep fertilisation system, a new airflow equaliser was designed based on the mechanism of gas flow in ventilation engineering. Subse...
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Emin Musa Afandiyev,Mahammadali Nuraddin Nuriyev
Pág. 16 - 21
Much attention has been recently paid to institutional measures aimed at improving quality of products related to petroleum machine building, in particular, the implementation of quality management systems based on the ISO standards of series 9000 [...
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Asier Diaz de Corcuera, Aron Pujana-Arrese, Jose M. Ezquerra, Edurne Segurola and Joseba Landaluze
This article demonstrates a strategy to design multivariable and multi-objective controllers based on the H8 norm reduction applied to a wind turbine. The wind turbine model has been developed in the GH Bladed software and it is based on a 5 M...
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