Results 31 to 40 of about 2,009,459 (332)

Numerical and Experimental Investigation of the Temperature Rise of Cutting Tools Caused by the Tool Deflection Energy

Machines, 2021
Tool temperature variation in flank milling usually causes excessive tool wear, shortens tool life, and reduces machining accuracy. The heat source is the primary factor of the machine thermal error in the process of cutting components.
Yunxia Guo, Wenhua Ye, Xiang Xu
doaj   +1 more source

Modeling Extragalactic Foregrounds and Secondaries for Unbiased Estimation of Cosmological Parameters From Primary CMB Anisotropy [PDF]

, 2011
Using the latest physical modeling and constrained by the most recent data, we develop a phenomenological parameterized model of the contributions to intensity and polarization maps at millimeter wavelengths from external galaxies and Sunyaev-Zeldovich ...
Amblard, Battaglia, Cardoso, Dunkley, Fendt, Fixsen, G. Holder, Giavalisco, Giodini, Gold, Gruzinov, Haiman, Hall, Hodge, Hu, Iliev, J. Dudley, Keisler, Knox, Knox, Komatsu, Komatsu, L. Knox, L. Shaw, Lagache, Lau, Lewis, Lueker, M. Millea, McQuinn, Navarro, O. Doré, O. Zahn, Peacock, Planck Collaboration., Prunet, Puget, Santos, Scott, Sehgal, Shaw, Shaw, Shirokoff, Tegmark, Tegmark, Tinker, Trac, Vieira, Viero, White, Wright, Y.-S. Song, Zahn, Zahn, Zhang   +54 more
core   +2 more sources

Could we identify hot Ocean-Planets with CoRoT, Kepler and Doppler velocimetry? [PDF]

, 2007
Planets less massive than about 10 MEarth are expected to have no massive H-He atmosphere and a cometary composition (50% rocks, 50% water, by mass) provided they formed beyond the snowline of protoplanetary disks.
A. Léger, Alibert, Alonso, B. Chazelas, Baraffe, Baraffe, Barman, Bordé, Bouchy, C. Moutou, C. Sotin, Chassefiére, Cox, D. Despois, D. Ehrenreich, D. Mawet, Di Benedetto, Ehrenreich, F. Bouchy, F. Brachet, F. Selsis, Fortney, Grießmeier, Grießmeier, H. Lammer, J.-M. Grießmeier, J.F. Kasting, Kasting, Kervella, Khodachenko, Kuchner, Lammer, Lovis, Léger, Léger, M. Decaudin, M. Deleuil, M. Ollivier, Mayor, Moutou, O'Donovan, O. Grasset, P. Barge, P. Bordé, Pepe, Press, Protanov, Rafikov, Raymond, Raymond, Raymond, Ribas, Rouan, Santos, Sato, Terada, Tian, Valencia, Vidal-Madjar, Vidal-Madjar, Watson, Wood, Wood, Yelle   +63 more
core   +5 more sources

A Fourier Series-Neural Network Based Real-Time Compensation Approach for Geometric and Thermal Errors of CNC Milling Machines

Advances in Mechanical Engineering, 2013
In order to improve the accuracy and efficiency of the real-time error compensation, a Fourier Series-Neural Network (FS-NN) based compensation methodology is developed to reduce the thermally induced geometric errors of CNC milling machines under ...
Wei Wang, Yi Zhang, Kaiguo Fan, Jianguo Yang   +3 more
doaj   +1 more source

GMOSS: All-sky model of spectral radio brightness based on physical components and associated radiative processes [PDF]

, 2016
We present Global MOdel for the radio Sky Spectrum (GMOSS) -- a novel, physically motivated model of the low-frequency radio sky from 22 MHz to 23 GHz.
Chluba, Jens, Rao, Mayuri Sathyanarayana, Shankar, N Udaya, Subrahmanyan, Ravi   +3 more
core   +3 more sources

Spindle thermal error modeling method considering the operating condition based on Long Short-Term Memory

Engineering Research Express, 2021
Thermal error has a significant effect on machine tools’ precision. Traditional methods usually establish the thermal error model by temperature. As the temperature only describes the instant state of the machine tool, it is inadequate to clarify the ...
Yu Chen, Huicheng Zhou, Jihong Chen, Guangda Xu   +3 more
semanticscholar   +1 more source

Real-Time Compensation for Thermal Errors of the Milling Machine

Applied Sciences, 2016
This paper is focused on developing a compensation module for reducing the thermal errors of a computer numerical control (CNC) milling machine. The thermal induced displacement variations of machine tools are a vital problem that causes positioning ...
Tsung-Chia Chen, Chia-Jung Chang, Jui-Pin Hung, Rong-Mao Lee, Cheng-Chi Wang   +4 more
doaj   +1 more source

Heat Transfer and Structural Characteristics of Dissimilar Joints Joining Ti-64 and NiTi via Laser Welding

Energies, 2022
This study investigates the thermal-stress characteristics of a bi-metallic Ti-6Al-4V-Nitinol butt joints manufactured via laser welding. Particularly, the thermal profile along the weld interface and the deformation profile of the finished welded ...
Aspen Glaspell, Jose Angel Diosdado De la Pena, Saroj Dahal, Sandesh Neupane, Jae Joong Ryu, Kyosung Choo   +5 more
doaj   +1 more source

High-Performance Integrated Window and Façade Solutions for California [PDF]

, 2020
The researchers developed a new generation of high-performance façade systems and supporting design and management tools to support industry in meeting California’s greenhouse gas reduction targets, reduce energy consumption, and enable an adaptable ...
Breshears, John, Curcija, Charlie, Deisler-Moroder, David, Fernandes, Luis, Gehbauer, Christoph, Kohler, Christian, Lee, Eleanor, Peng, Jingqing, Selkowitz, Stephen, Thanachareonkit, Anothai, Wang, Taoning, Ward, Gregory   +11 more
core  

The Thermal Error Characteristic Analysis and Thermal Error Modeling Compensation of Aspheric Grinder

Mechanics
According to the literature analysis, the thermal error of CNC machine tools is the main factor affecting its processing accuracy, accounting for about 40% -70% ; This paper discusses the structure assembly of Aspherical Grinder, which is the research carrier of thermal error analysis of NC machine tool, and analyzes the characteristics and concrete ...
Bo YU, Xiao-peng CHANG, Lei YU
openaire   +1 more source