Use of Newton Thermal Analysis for the Prediction of the Amount of Microconstituents Formed during Solidification

2006 ◽  
Vol 509 ◽  
pp. 147-152 ◽  
Author(s):  
H. Cruz ◽  
L. López ◽  
B. Campillo ◽  
Carlos González-Rivera
Keyword(s):  
Thermal Analysis ◽  
Relative Volume ◽  
Experimental Measurements ◽  
Analysis Tool ◽  
Alternative Technique ◽  
Quantitative Metallography ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Good Potential

This work explores the feasibility of using the Newton Thermal Analysis method (NTA) as an alternative technique for quantitative determination of the relative volume fractions of the microconstituents formed during solidification of three hypereutectic Pb-Sn alloys. The results suggest that NTA has a good potential as a quantitative microstructure analysis tool. However, it is required to further improve the method in order to match the microstructure predictions with the experimental measurements obtained by quantitative metallography.

Research program of determination of geological age by thermal analysis method

2013 ◽  
Vol 24 (4) ◽  
pp. 657-662 ◽  
Author(s):  
Tongsuo Yang ◽  
Duqiang Xin ◽  
Tuanbu Wang ◽  
Dengwu Wang ◽  
Yongqian Shi ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Research Program ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Geological Age

Thermal analysis method of electromagnetic linear actuator based on multiphysics coupling model

2021 ◽  
pp. 1-17
Author(s):  
Geng Wang ◽  
Renjing Gao ◽  
Qi Wang ◽  
Shutian Liu
Keyword(s):  
Thermal Analysis ◽  
Thermal Characteristics ◽  
Coupling Model ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Performance Requirements ◽  
Wide Range ◽  
Multiphysics Coupling ◽  
Simulation And Experiment ◽  
Electromagnetic Linear Actuator

Electromagnetic linear actuators (ELAs) may be confronted with unsatisfactory performance when subjected to overheating. Therefore, it is significant to clarify its thermal characteristics and design the thermal performance requirements. A thermal analysis method based on multiphysics coupling model was presented, which uses the non-simplified loss distribution as the heat source to calculate the temperature field, adjusts the material properties by temperature, and considers the interaction between motion (including impact) and loss. More importantly, an improved universal equivalent winding to satisfy the condition of real compact concentrated winding was developed. Finally, the validity of this approach was verified through the experiment, and the regularity of temperature was summarized. The results show that the error of simulation and experiment is less than 6% and the permissible continuous operation frequency is no more than 30 Hz. The approach proposed in this paper can be employed not only to the ELA, but also to the design and analysis a wide range of electromagnetic machines.

Study on the inhibitor rate evaluation by thermal analysis method

2014 ◽  
pp. 237-243
Author(s):  
Changfu Xu ◽  
Zhongya Zheng ◽  
Shasha Yuan ◽  
Haifei Yao ◽  
Haijun Wu
Keyword(s):  
Thermal Analysis ◽  
Analysis Method ◽  
Thermal Analysis Method ◽  
Rate Evaluation

scholarly journals Prediction and measurement of selected phase transformation temperatures of steels

2017 ◽  
Vol 53 (3) ◽  
pp. 391-398 ◽  
Author(s):  
O. Martiník ◽  
B. Smetana ◽  
J. Dobrovská ◽  
A. Kalup ◽  
S. Zlá ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Phase Transformation ◽  
Statistical Evaluation ◽  
Precise Determination ◽  
Experimental Measurements ◽  
Transformation Temperatures ◽  
Literature Research ◽  
Computational Thermodynamic ◽  
Peritectic Transition

The study deals with precise determination of phase transformation temperatures of steel. A series of experimental measurements were carried out by Differential Thermal Analysis (DTA) and Direct Thermal Analysis (TA) to obtain temperatures very close to the equilibrium temperatures. There are presented results from the high temperatures region, above 1000?C, with focus on the solidus temperatures (TS), peritectic transition (TP) and liquidus (TL) of multicomponent steels. The data obtained were verified by statistical evaluation and compared with computational thermodynamic and empirical calculations. The calculations were performed using 15 empirical equations obtained by literature research (10 for TL and 5 for TS), as well as by software InterDendritic Solidification (IDS) and Thermo-Calc (2015b, TCFE8; TC). It was verified that both thermo-analytical methods used are set correctly; the results are reproducible, comparable and close to equilibrium state.

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