Cutting Tool Life Analysis in Heat-Pipe Assisted Drilling Operations

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Lin Zhu ◽  
Tien-Chien Jen ◽  
Yong-Bing Liu ◽  
Jie-Wen Zhao ◽  
Wei-Lai Liu ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Thermal Management ◽  
Tool Life ◽  
Manufacturing Industry ◽  
Drilling Fluid ◽  
Life Extension ◽  
Cooling Conditions ◽  
Drilling Operations ◽  
Life Analysis ◽  
Fluid Cooling

This paper further focuses on the feasibility and effectiveness of heat-pipe cooling in drilling operations based on our previously related work. To achieve this, the authors used a combination of numerical analyses and experimental measurements for drilling in three different cooling conditions, i.e., dry drilling, fluid cooling, and heat-pipe cooling. The evidences obtained from the experimental study and finite element analyses were compared. The results strongly demonstrate that heat-pipe assisted cooling in drilling processes can effectively perform thermal management comparable to the fluid cooling used pervasively in the manufacturing industry, consequently offering the tool life extension.

Improved Tool Life in Heat-Pipe Assisted Drilling Operations

2012 ◽  
Author(s):  
Lin Zhu ◽  
Tien-Chien Jen ◽  
Yong-Bin Liu ◽  
Wei-Lai Liu ◽  
Ji-Wen Zhao ◽  
...  
Keyword(s):  
Finite Element ◽  
Heat Pipe ◽  
Tool Life ◽  
Manufacturing Industry ◽  
Drilling Fluid ◽  
Convection Heat Transfer ◽  
Thermal Characteristics ◽  
Cooling Conditions ◽  
Drilling Operations ◽  
Fluid Cooling

This paper focuses on the feasibility and effectiveness of heat-pipe cooling in drilling operations. The basic idea is to embed a heat-pipe at the center of the tool with the evaporator close to the tool-tip, and the condenser at the end of the tool. Consequently, the heat generated at the tool-chip interface can be removed by convection heat transfer. To achieve this, a combination of numerical analyses and experimental measurements was used under three different cooling conditions, e.g., dry drilling, fluid cooling and heat-pipe cooling. The thermal characteristics of the drills were predicted using a numerical calculation with Fast Finite Element (FFE) plus solvers, whilst flank wear is considered as the criterion for tool failure and the wear was measured using a Hisomet II Toolmaker’s microscope. Tool life was also evaluated based on the foregoing tool wear morphology under each condition. The evidences obtained from the experimental study and finite element analyses were compared. The results demonstrate that heat-pipe assisted cooling in drilling processes can effectively perform thermal management comparable to the fluid cooling used pervasively in the manufacturing industry, extending the tool life of the drill.

scholarly journals Thermal Management of Bone Drilling Based on Rotating Heat Pipe

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 35
Author(s):  
Jiajia Chen ◽  
Dongdong Yuan ◽  
Huafei Jiang ◽  
Liyong Zhang ◽  
Yong Yang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Heat Pipe ◽  
Thermal Management ◽  
Rotational Speed ◽  
Convection Heat Transfer ◽  
Film Condensation ◽  
Good Prospect ◽  
Bone Drilling ◽  
Drilling Operations

Bone drilling is a common surgical operation, which often causes an increase in bone temperature. A temperature above 47 °C for 60 s is the critical temperature that can be allowed in bone drilling because of thermal bone osteonecrosis. Therefore, thermal management in bone drilling by a rotating heat pipe was proposed in this study. A new rotating heat pipe drill was designed, and its heat transfer mechanism and thermal management performance was investigated at occasions with different input heat flux and rotational speed. Results show that boiling and convection heat transfer occurred in the evaporator and film condensation appears in the condenser. The thermal resistance decreases with the increase of the rotational speed at the range from 1200 to 2000 rpm and it decreases as the input heat flux rises from 5000 to 10,000 W/m2 and increases at 20,000 W/m2. The temperature on the drill tip was found to be 46.9 °C with an input heat flux of 8000 W/m2 and a rotational speed of 2000 rpm. The new designed rotating heat pipe drill showed a good prospect for application to bone drilling operations.

scholarly journals Assessing the Relation between Mud Components and Rheology for Loss Circulation Prevention Using Polymeric Gels: A Machine Learning Approach

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1377
Author(s):  
Musaab I. Magzoub ◽  
Raj Kiran ◽  
Saeed Salehi ◽  
Ibnelwaleed A. Hussein ◽  
Mustafa S. Nasser
Keyword(s):  
Machine Learning ◽  
Rheological Properties ◽  
Nearest Neighbor ◽  
Drilling Fluid ◽  
Gradient Boosting ◽  
K Nearest Neighbor ◽  
Wide Range ◽  
Machine Learning Approach ◽  
Drilling Operations

The traditional way to mitigate loss circulation in drilling operations is to use preventative and curative materials. However, it is difficult to quantify the amount of materials from every possible combination to produce customized rheological properties. In this study, machine learning (ML) is used to develop a framework to identify material composition for loss circulation applications based on the desired rheological characteristics. The relation between the rheological properties and the mud components for polyacrylamide/polyethyleneimine (PAM/PEI)-based mud is assessed experimentally. Four different ML algorithms were implemented to model the rheological data for various mud components at different concentrations and testing conditions. These four algorithms include (a) k-Nearest Neighbor, (b) Random Forest, (c) Gradient Boosting, and (d) AdaBoosting. The Gradient Boosting model showed the highest accuracy (91 and 74% for plastic and apparent viscosity, respectively), which can be further used for hydraulic calculations. Overall, the experimental study presented in this paper, together with the proposed ML-based framework, adds valuable information to the design of PAM/PEI-based mud. The ML models allowed a wide range of rheology assessments for various drilling fluid formulations with a mean accuracy of up to 91%. The case study has shown that with the appropriate combination of materials, reasonable rheological properties could be achieved to prevent loss circulation by managing the equivalent circulating density (ECD).

scholarly journals PCM assisted heat pipe cooling system for the thermal management of an LTO cell for high-current profiles

2021 ◽  
pp. 100920
Author(s):  
Hamidreza Behi ◽  
Danial Karimi ◽  
Foad Heidari Gandoman ◽  
Mohsen Akbarzadeh ◽  
Sahar Khaleghi ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Thermal Management ◽  
Cooling System ◽  
High Current

Investigation of thermal management of lithium-ion battery based on micro heat pipe array

2021 ◽  
Vol 39 ◽  
pp. 102624
Author(s):  
Lincheng Wang ◽  
Yaohua Zhao ◽  
Zhenhua Quan ◽  
Jianan Liang
Keyword(s):  
Heat Pipe ◽  
Lithium Ion Battery ◽  
Thermal Management ◽  
Lithium Ion ◽  
Micro Heat Pipe

scholarly journals A hybrid thermal management system for high power lithium-ion capacitors combining heat pipe with phase change materials

Heliyon ◽  
2021 ◽  
pp. e07773
Author(s):  
Danial Karimi ◽  
Md Sazzad Hosen ◽  
Hamidreza Behi ◽  
Sahar Khaleghi ◽  
Mohsen Akbarzadeh ◽  
...  
Keyword(s):  
Phase Change ◽  
Heat Pipe ◽  
Thermal Management ◽  
High Power ◽  
Management System ◽  
Phase Change Materials ◽  
Lithium Ion ◽  
Thermal Management System

A Generalized Model for the Field Assessment of Drilling Fluid Viscoelasticity

2021 ◽  
Author(s):  
Chen Hongbo ◽  
Okesanya Temi ◽  
Kuru Ergun ◽  
Heath Garett ◽  
Hadley Dylan
Keyword(s):  
Drilling Fluid ◽  
Field Testing ◽  
Field Application ◽  
Testing Equipment ◽  
Drilling Fluids ◽  
Rotational Viscometer ◽  
Generalized Model ◽  
Fluid Elasticity ◽  
Field Samples ◽  
Drilling Operations

Abstract Recent studies highlight the significant role of drilling fluid elasticity in particle suspension and hole cleaning during drilling operations. Traditional methods to quantify fluid elasticity require the use of advanced rheometers not suitable for field application. The main objectives of the study were to develop a generalized model for determining viscoelasticity of a drilling fluid using standard field-testing equipment, investigate the factors influencing drilling fluid viscoelasticity in the field, and provide an understanding of the viscoelasticity concept. Over 80 fluid formulations used in this study included field samples of oil-based drilling fluids as well as laboratory samples formulated with bentonite and other polymers such as partially-hydrolyzed polyacrylamide, synthesized xanthan gum, and polyacrylic acid. Detailed rheological characterizations of these fluids used a funnel viscometer and a rotational viscometer. Elastic properties of the drilling fluids (quantified in terms of the energy required to cause an irreversible deformation in the fluid's structure) were obtained from oscillatory tests conducted using a cone-and-plate type rheometer. Using an empirical approach, a non-iterative model for quantifying elasticity correlated test results from a funnel viscometer and a rotational viscometer. The generalized model was able to predict the elasticity of drilling fluids with a mean absolute error of 5.75%. In addition, the model offers practical versatility by requiring only standard drilling fluid testing equipment to predict viscoelasticity. Experimental results showed that non-aqueous fluid (NAF) viscoelasticity is inversely proportional to the oil-water ratio and the presence of clay greatly debilitates the elasticity of the samples while enhancing their viscosity. The work efforts present a model for estimating drilling fluid elasticity using standard drilling fluid field-testing equipment. Furthermore, a revised approach helps to describe the viscoelastic property of a fluid that involves quantifying the amount of energy required to irreversibly deform a unit volume of viscoelastic fluid. The methodology, combined with the explanation of the viscoelasticity concept, provides a practical tool for optimizing drilling operations based on the viscoelasticity of drilling fluids.

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