scholarly journals Putative Hall response of the strange metal component in FeSe1−xSx

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
M. Čulo ◽  
M. Berben ◽  
Y.-T. Hsu ◽  
J. Ayres ◽  
R. D. H. Hinlopen ◽  
...  
Keyword(s):  
2015 ◽  
Vol 651-653 ◽  
pp. 1153-1158 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Anas Bouguecha ◽  
Milan Vucetic ◽  
Sven Hübner ◽  
Daniel Rosenbusch ◽  
...  

Sheet-bulk metal forming is a manufacturing technology, which allows to produce a solid metal component out of a flat sheet. This paper focuses on numerical and experimental investigations of a new multistage forming process with compound press tools. The complete process sequence for the production of this solid metal component consists of three forming stages, which include a total of six production techniques. The first forming stage includes deep drawing, simultaneous cutting and following wall upsetting. In the second forming stage, flange forming combined with cup bottom ironing takes place. In the last stage of the process sequence, the component is sized. To investigate and to improve process parameters such as plastic strain distribution, resulting dimensions and process forces, FEA is performed. Based on these results the developed process is designed.


2018 ◽  
Vol 122 (49) ◽  
pp. 28055-28064 ◽  
Author(s):  
Randy L. Lawrence ◽  
Vincent J. Cendan ◽  
Billy Scola ◽  
Yang Liu ◽  
Chang-Keun Lim ◽  
...  

Author(s):  
Arun Shivaram ◽  
Nagi G. Naganathan

Abstract Given the design of a sheet metal component that is to be produced by pressworking, there can be more than one design for the die to produce that component. It will be desirable if a mechanism exists to identify the better of the design alternatives. A method referred to as Die Producibility Evaluation Method (DPEM) is presented in this paper to evaluate the design of a given pressworking die. The method involves identification and classification of the parameters involved in the design and operation of the pressworking die. These parameters are categorized as design cost factors and process cost factors. For a given die design, the design and process cost factors are identified and the results are tabulated in the DPEM table. In order to illustrate the method, a particular sheet metal component is chosen. A set of dies required to produce this component is then designed by a novice designer. This design is referred to as the initial design. The Die Producibility Evaluation Method is applied to the initial design, the DPEM table is updated, and an improved design is identified based on the evaluations recorded in the DPEM table. In order to provide a measure of quality, a second design is carried out under the guidance of an expert designer and is referred to as the reference design. It is shown that the improved design closely matches the reference design, thus illustrating the level of performance and applicability of the Die Producibility Evaluation Method.


Author(s):  
J. Choi ◽  
J. Mazumder

Abstract Development of a new product takes several phases — conceptual design, assembly layouts, detail design, prototype, testing, and then production. Competitiveness hinges on reducing these phases in time for new products. Rapid prototyping (RP) and rapid production are the concept that is aimed specifically at that goal. The essence of RP and rapid production is the formation of a solid 3-D object directly from CAD dimensions. Laser aided direct metal/material deposition (LADMD) offers the ability to make a metal component directly from 3-D CAD dimensions. 3-D CAD data can be converted to machine tool code after the 3-D object is sliced down layer by layer. Repeating laser cladding pass layer by layer, a 3-D object can be formed with the help of CAD data. The key of this build-up mechanism is the effective control of powder to be delivered and laser power to be irradiated into the melt-pool. Adaptive deposition associated with varied thickness deposition is more effective to build up layers quickly than uniform thickness deposition. The rational for this deposition strategy is how quickly and how soundly it can be deposited. Fabricated example parts are presented. This paper also reviews important issues regarding geometrical integrity as well as material integrity in developing LADMD process.


2019 ◽  
Vol 61 (2) ◽  
pp. 71-79 ◽  
Author(s):  
E. P. Domashevskaya ◽  
S. A. Ivkov ◽  
A. V. Sitnikov ◽  
O. V. Stognei ◽  
A. T. Kozakov ◽  
...  

2018 ◽  
Vol 53 ◽  
pp. 01007
Author(s):  
Yinghong Zuo ◽  
Maoyu Zhang ◽  
Guoxin Cheng ◽  
Shengli Niu

To obtain the transient current response law of the metal component irradiated by pulsed gamma rays, the pulsed gamma ray irradiation experiment of the iron plate was carried out on “Qiangguang-I” accelerator. The transient current of iron plate generated by pulsed gamma rays was measured and analysed, and the relationship between the amplitude of pulse current and the dose rate of gamma rays was obtained. The results show that the current response sensitivity of the iron plate is about 5.7×10-7(A/m2)/(Gy/s) when the gamma rays with the energy of 0.8 MeV irradiate the iron plate. The charge deposition rate in the iron plate can be obtained by Monte Carlo simulation, and then it can be converted to gamma ray induced current of the metal component irradiated by gamma rays.


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