Results 41 to 50 of about 1,486,164 (204)

Research on Pore Pressure Detection While Drilling Based on Mechanical Specific Energy

Processes, 2022
The detection of the formation of pore pressure while drilling is of great importance to ensure safe drilling operations. At present, the dc-exponent concept is mainly used to detect pore pressure while drilling. The dc-exponent concept is based on the theory of shale compaction, which is limited when used in carbonate rocks.
Hu Yin, Hongwei Cui, Jiajia Gao
openaire   +1 more source

Modeling of a heaving buoy wave energy converter with stacked dielectric elastomer generator [PDF]

, 2014
This paper introduces a novel architecture of Wave Energy Converter (WEC) provided with a Dielectric Elastomer (DE) Power Take-Off (PTO) system. The device, named Poly-Buoy, includes a heaving buoy as primary interface, that captures the mechanical ...
Fontana, Marco, Moretti, Giacomo, Vertechy, Rocco   +2 more
core   +1 more source

Experimental Study on Mechanical Specific Energy Optimization in Axial–Torsional Coupled Impact Drilling

Applied Sciences
Axial–torsional coupled impact drilling (ATCID) technology represents a promising solution for overcoming the drilling challenges posed by conglomerate formations, which are characterized by strong heterogeneity, high abrasiveness, and poor drillability.
Chuanming Xi, Desheng Wu, Chuanzhen Zang, Shen Wang, Yong Guo, Zongjie Mu, Zhehua Yang   +6 more
doaj   +1 more source

Octet-truss cellular materials for improved mechanical properties and specific energy absorption

Materials & Design, 2019
Optimization method has been widely acknowledged as an effective approach to design engineering structures, and yet few studies adopt this method to design cellular materials.
Jian Song, Wenzhao Zhou, Yuejiao Wang, Rong Fan, Yinchu Wang, Junying Chen, Yang Lu, Lixiao Li   +7 more
doaj   +1 more source

Compression and Deformation Behaviors of Hierarchical Circular-Cell Lattice Structure with Enhanced Mechanical Properties and Energy Absorption Capacity

Aerospace, 2022
The design of lightweight lattice structures with excellent specific mechanical properties has received great attention in recent years. In this paper, inspired by the hierarchical structure of biological materials, a novel hierarchical circular-cell ...
Mingzhi Wang, Junchao Zhang, Weidong Wang   +2 more
doaj   +1 more source

Changes in the physical properties and specific mechanical energy of corn-mango peel extrudates

CyTA - Journal of Food, 2020
A corn-mango peel blend was processed using a laboratory-scale single-screw extruder, which led to the determination of the apparent density, yellowness, and specific mechanical energy of the extrudate.
Mazween Mohamad Mazlan, Rosnita A. Talib, Farah Saleena Taip, Nyuk Ling Chin, Rabiha Sulaiman, Radhiah Shukri, Mohd Zuhair Mohd Nor   +6 more
doaj   +1 more source

Experiment Investigation of the Compression Behaviors of Nickel-Coated Hybrid Lattice Structure with Enhanced Mechanical Properties

Micromachines, 2023
The lattice metamaterial has attracted extensive attention due to its excellent specific strength, energy absorption capacity, and strong designability of the cell structure.
Xiuxia Geng, Mingzhi Wang, Bingyu Hou
doaj   +1 more source

New technologies to improve root canal disinfection [PDF]

, 2016
Effective irrigant delivery and agitation are prerequisites to promote root canal disinfection and debris removal and improve successful endodontic treatment. This paper presents an overview of the currently available technologies to improve the cleaning
Cortese, Teresa, DI GIORGIO, Gianni, Gambarini, Gianluca, Grande, NICOLA MARIA, Leonardi, Denise P, Plotino, Gianluca, Testarelli, Luca   +6 more
core   +1 more source

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling [PDF]

, 2019
Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM.
openaire   +3 more sources

Influence of Drilling Along Pilot Holes on Drilling Performance and Effective Rock Strength

Applied Sciences
This study investigates the intricate relationship between bit rock interactions and drilling parameters for multiple-diameter hole drilling scenarios. Two sets of experiments were conducted in the Drilling Technology Laboratory at Memorial University of
Abourawi Alwaar, Ibrahim Futhiez, Abdelsalam Abugharara, Yahui Zhang, Stephen Butt   +4 more
doaj   +1 more source