Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Yhu-Jen Hwu"'
Autor:
Tsung Ying Tsai, Jen Fin Lin, Jiing Yih Lai, Wei Jr Lin, Lee Cheng Liu, Muhammad Arif Mahmood, Yhu Jen Hwu, Wang Long Li, Jui-Wen Pan
Publikováno v:
Journal of Materials Processing Technology. 279:116554
Cold rollings for Al5182 aluminum alloy strips are carried out to evaluate the optical parameters with the applications of two lubricants and various operating conditions. In order to obtain these optical parameters, the fractal parameters which incl
Publikováno v:
Key Engineering Materials. 642:190-195
Within past 20 years, high surface qualities of cold strip were demanded by automotive industry and electrical engineering. Main purposes of cold rolling processed are to provide high quality surface and generate appropriate roughness for different c
Autor:
Yhu-Jen Hwu, John G. Lenard
Publikováno v:
Journal of Engineering Materials and Technology. 120:19-25
An ultra-low carbon steel is studied and the temperatures at which the austenite to ferrite transformations begin and are complete are determined. The methods of measurements of the temperatures are discussed. The effects of the cooling rate, initial
Publikováno v:
Journal of Engineering Materials and Technology. 118:463-470
Continuous cooling curves of an extra-low carbon steel under three cooling rates are measured. The flow stress of the steel is established in compression tests during which the temperature is continuously decreasing. The phase transformation temperat
Publikováno v:
Steel Research. 67:59-66
Backpropagation neural networks are utilized to store and predict the flow stresses of several steels. A convergence algorithm using a varying learning factor is developed which is shown to save one sixth of the learning time when compared with the a
Publikováno v:
Journal of Materials Processing Technology. 37:319-335
The ring-compression test is traditionally conducted for identifying interfacial friction conditions during plastic deformation. The purpose of this investigation was to pursue the test for determining the flow stress of the material at high strain r
Autor:
Yhu-Jen Hwu, Chang-Huei Wu
Publikováno v:
Manufacturing Science and Engineering.
Extra-low carbon steel had been rolled in conventional hot rolling mill. For improving its mechanical and metallurgical properties, its high phase transformation temperature typically encountered in the finishing mill section that results in abrupt c
Autor:
Yhu-Jen Hwu, J. G. Lenard
Publikováno v:
Journal of Engineering Materials and Technology. 110:22-27
Using an Eulerian formulation, a finite element solution for the flat rolling problem is presented. Calculations are performed to establish the effects of roll deformation and of the variation of the coefficient of friction in the roll gap on the pre
Publikováno v:
Journal of Engineering Materials and Technology. 111:372-377
A Nb-V steel’s response to constant true strain rate compression was compared to its behavior when the strain rate varied as during a rolling pass. The constitutive behavior during the two types of tests was found not to differ in a significant man