Results 91 to 100 of about 123,905 (309)

Research on Calculation Method of Gear Tooth Thermal Deformation Based on the Equivalent Gear Method

Jixie chuandong
Based on the calculation method of thermal deformation of spur gears, a calculation and analysis model of thermal deformation with equivalent spur gears as the object is formed.
Gao Xuepeng, Jiang Qinchen, Xiao Yang, Zhang Quanqing, Qiao Zheye   +4 more
doaj  

Shift of dynamic recrystallization kinetics in thermal compression induced by prior cold deformation treatment at Ni80A superalloy

Journal of Materials Research and Technology
To achieve the uniform and fine-grained microstructures during thermal deformation of nickel-based superalloys, a novel two-stage deformation approach was employed, involving prior cold deformation treatment (PCDT) and subsequent thermal deformation ...
Yuqing Zhang, Guozheng Quan, Jiang Zhao, Yanze Yu, Yingying Liu, Wei Xiong   +5 more
doaj   +1 more source

Thermal Error Modelling of a CNC Machine Tool Feed Drive System using FEA Method

, 2016
Recirculating ball screw systems are commonly used in machine tools and are one of the major heat sources which cause considerable thermal drift in CNC machine tools.
Longstaff, Andrew P., Mian, Naeem, Abuaniza, Ayman, Fletcher, Simon, Mian, Naeem S., Longstaff, Andrew   +5 more
core  

Crustal deformation in extensional regimes: Iceland, Nevada and SW Turkey [PDF]

, 1996
In 1991 a 23-point, 30 x 25 km, GPS geodetic network was established in the Hengill ridge-ridge-transform triple junction, SW Iceland. The GPS data were processed using the Bernese V3.2 software.
Hodgkinson, Kathleen Marian
core  

Micromechanical modeling if the interactions between the microstructure and the dissipative deformation mechanisms in steels under cyclic loading [PDF]

, 2012
La version éditeur de cette publication est disponible à l'adresse suivante : http://www.sciencedirect.com/science/article/pii/S074964191100194XA micromechanical model is proposed to describe the interactions between the microstructure and the ...
WEBER, Bastien, GALTIER, André, FAVIER, Véronique, Marcel Berveiller, BERVEILLER, Marcel, Bastien Weber, André Galtier, MAREAU, Charles, Charles Mareau, Véronique Favier   +9 more
core   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

CNC装置の内部情報を利用した工作機械の熱変形推定 [PDF]

, 2003
A new method is proposed in the present research to estimate thermal deformation of mechine tools. The present method utilizes available information in CNC units instead of external sensors such as thermocouples and strain gages.
SHAMOTO, Eiji, 松原, 陽介, 樋野, 励, HINO, Rei, TOMIE, Tatsuya, 社本, 英二, 冨江, 竜哉, MORIWAKI, Toshimichi, MATSUBARA, Yosuke, 森脇, 俊道   +9 more
core  

An efficient offline method for determining the thermally sensitive points of a machine tool structure

, 2012
Whether from internal sources or arising from environmental sources, thermal error in most machine tools is inexorable. Out of several thermal error control methods, electronic compensation can be an easy-to-implement and cost effective solution. However,
Longstaff, Andrew P., Mian, Naeem, Mian, Naeem S., Fletcher, Simon, Longstaff, Andrew, Myers, Alan   +5 more
core   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source