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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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Shahriar Shahbazpanahi
Pág. 285 - 290
Shear crack analysis is essential for engineers to estimate repair work in concrete structures. So far, conventional theoretical and numerical analyses in fracture mechanics have been applied to study concrete flexural beams, but there is still lit...
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Aboubakar Seddik Bouchikhi, Nassereddine Bouida, Farouk Benallal Boukhoulda
Pág. 123 - 131
This study has been made to determine the performance of the (Ti-TiB) FGM plate to reduce the J-integral calculated for the crack tip emanating from the semicircular notch root in mode I and mixed mode, when the crack is propagated from the notch root. I...
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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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Stefano Furlani, Fabrizio Antonioli, Emanuele Colica, Sebastiano D?Amico, Stefano Devoto, Pietro Grego and Timmy Gambin
Sea caves are a type of cave formed primarily by the wave action of the sea. The coastal scenery of the Gozitan coast is very interesting in that sea caves and other coastal landforms, such as sea arches, develop at the sea level. We mapped seventy-nine ...
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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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Se-eun Kim and Yong-min You
Permanent magnet synchronous motors (PMSMs) with rectangular coils in hairpin windings exhibit improved fill factor and reduced end turn of the coils, which in turn improve the efficiency and power density of PMSMs, making them ideal for e-mobility appli...
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Emin Musa Afandiyev,Mahamadali Nuraddin Nuriyev
Pág. 47 - 51
An analysis of the discarded drill pipes that had been used in wedge grips has revealed that the main reason for pipe rejection is the reduction of a pipe wall as a result of plastic deformations, due to damaging the pipe surface by the die teeth. The lo...
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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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