Results 41 to 50 of about 27,452 (263)

Multi-parameter while-drilling monitoring experiment of loaded coal and while-drilling outburst prediction method

Meitan xuebao
The prediction results of coal and gas outburst are directly related to the safe mining of coal seams and the scientific implementation of outburst prevention measures.
Longyong SHU, Zhendong YAN, Zhengshuai LIU, Wenming RAO, Yang LI, Yongqian LIU   +5 more
doaj   +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

High‐Temperature Phase Transformation in a V‐9Si‐6.5B Alloy: The Kinetic and Crystallographic Pathway From V5SiB2 to V8SiB4

Advanced Engineering Materials, EarlyView.
In situ synchrotron high‐energy X‐ray diffraction reveals the real‐time high‐temperature phase evolution of a ternary V‐9Si‐6.5B alloy. The study uncovers a kinetically delayed V5SiB2 → V8SiB4 transformation governed by massive structural and chemical barriers.
Zahra Sabeti, Andreas Stark, Roja Rani Korrayi, Florian Pyczak, Georg Hasemann   +4 more
wiley   +1 more source

Design and Experiments of Directional Core Drilling Tool

Applied Sciences
In the coring process of ocean drilling, conventional vertical holes face many difficulties, such as the high cost of single holes and limited acquisition of geological information, which cannot meet the demand for fine delineation of strata around drill
Yingli Wang, Xiaoyang Li, Yinlong Ma, Shanshan Shi, Qingquan Zhou, Jiabao Chou, Junda Chen   +6 more
doaj   +1 more source

DigiChrom: A Domain Ontology for Semantic Representation of Trivalent Chromium Platings and Its Large Language Model‐Based Alignment With Multiple Mid‐Level Ontologies

Advanced Engineering Materials, EarlyView.
Digitalizing electroplating requires both domain knowledge and interoperability. This work introduces PlatOn, a domain ontology for trivalent chromium plating and coating characterization, and a hybrid pipeline that aligns it to a mid‐level reference ontology by combining eight similarity metrics with language model reasoning. Expert‐validated mappings
Janik Harter, Elena Garcia Trelles, Christoph Schweizer, Thomas Seifert, Christoph Baumer, Mahmoud Elkady, Katja Feige, Daniel Grimme, Edgar Hoffmann, Andreas Waibel, Anke Walter   +10 more
wiley   +1 more source

A New Method for Determining the Spatial Distribution Law of Rock Anti-Drilling Characteristics

Shiyou jixie, 2021
When the existing method for determining the distribution laws of rock anti-drilling characteristics is adopted, the rock anti-drilling characteristics at the same depth are not distributed continuously and the spatial distribution laws of rock anti ...
Hu Pengjie, Li Zhonghui, Jiang Zhanfeng, Lou Yishan, Yang Minghe, Zhang Yan   +5 more
doaj  

Drilling Parameter Optimization of Shale Gas Wells Based on Saw-Tooth Genetic Algorithm to Reduce Drilling Costs

Geofluids, 2023
It is difficult to optimize the drilling parameters, which makes it difficult to reduce drilling costs in the process of drilling shale gas wells in the Fuling region of Chongqing, China.
Kai Bai, Abing Dong, Ce Zhan, WanXing Zhang, BingRui Tu   +4 more
doaj   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Test-Bed Performance of an Ice-Coring Drill Used with a Hot Water Drilling System

Journal of Marine Science and Engineering, 2019
Ice cores from ice shelves contain abundant paleoclimatic information and provide essential information concerned with the prediction of future climatic change and global sea level variations.
An Liu, Rusheng Wang, Xiaopeng Fan, Yang Yang, Xingchen Li, Liang Wang, Pavel Talalay   +6 more
doaj   +1 more source

Enhancing Fatigue Crack Growth Resistance in Heterostructured Aluminum Bimetals by Tailored Interface Design

Advanced Engineering Materials, EarlyView.
Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath, Philip Manuel Pohl, Heinz Werner Höppel   +2 more
wiley   +1 more source