scholarly journals Preparation of Ti/Al composite plates by differential temperature rolling with induction heating

2021 ◽  
Author(s):  
Chao Yu ◽  
zhibin He ◽  
Qiang Lv ◽  
Jirui Yu ◽  
Hong Xiao
Keyword(s):  
Finite Element ◽  
Induction Heating ◽  
Bonding Strength ◽  
Electromagnetic Induction ◽  
Reduction Rate ◽  
Composite Plates ◽  
Homogeneous Deformation ◽  
Element Simulation ◽  
Al Composite ◽  
Electromagnetic Induction Heating

Abstract In the current study, we proposed a method of differential temperature rolling with electromagnetic induction heating to prepare Ti/Al composite plates in a protective atmosphere to realize the homogeneous deformation of Ti/Al bonding rolling and improve the interfacial bonding strength of the composite plates. The temperature field required for homogeneous deformation rolling of titanium and aluminum was constructed through finite element simulation by adjusting the parameters of electromagnetic induction heating, which made a temperature difference of about 632°C between titanium and aluminum, and the temperature of each plate was relatively uniform. The induction heating experiment was designed based on the finite element simulation, and the accuracy of the simulation results was verified by the experiment. The effects of rolling temperature and reduction rate of homogeneous deformation and bonding strength of Ti/Al composite plates were studied by rolling experiments. When the heating temperature of the Ti plate is 750–850°C, and the reduction rate is 30%-48%, with the increase of rolling temperature and reduction rate of titanium, the reduction rate of Ti plate and Al plate gradually tend to be the same. When the temperature of titanium plate and aluminum plate is 850°C and 188°C, respectively, with the rolling reduction rate of 48%, the deformation rate of Ti plate and Al plate is 46.8% and 48.6%, respectively, and the bonding strength of the composite plate reaches 77MPa.

The Structure Design of Low Frequency Electromagnetic Induction Heating System Based on Analysis of Thermal Effect

2013 ◽  
Vol 433-435 ◽  
pp. 1549-1553
Author(s):  
Jian Liu ◽  
Xin Wang ◽  
Shu Mao Wang ◽  
Han Fu
Keyword(s):  
Finite Element ◽  
Induction Heating ◽  
Electromagnetic Induction ◽  
Low Frequency ◽  
Heating System ◽  
Transverse Magnetic ◽  
Structure Design ◽  
Electric Induction ◽  
Electromagnetic Induction Heating ◽  
Induction Heating System

The low frequency transverse magnetic electric induction heating system uses high penetration of low frequency electromagnetic induction heat objects, which is new and high efficient. Due to the magnetic fluxing through objects transversely, it is different with other electromagnetic induction heating methods and this makes it applied more widely. And in this paper, we present the application of low frequency transverse magnetic electric induction heating system in the technique of the lock temperature on seamless line. With the analysis of heating efficiency, it also combines the theory of eddy current loss calculation with the verification results of finite element calculation and introduces the structure design of this system then. Keywords: low frequency electromagnetic induction, continuous welded rail, the lock temperature on seamless line, finite element

Dimensionamiento de un horno de fundición por inducción electromagnética y cálculo de los parámetros eléctricos

2019 ◽  
pp. 1-15
Author(s):  
Arnulfo Pérez-Pérez ◽  
Jorge Sergio Téllez-Martínez ◽  
Gregorio Hortelano-Capetillo ◽  
Jesús Israel Barraza-Fierro
Keyword(s):  
Induction Heating ◽  
Power Supply ◽  
Electromagnetic Induction ◽  
Cast Steel ◽  
Electrical Power ◽  
Heating System ◽  
Heating Time ◽  
Ferrous Alloys ◽  
Electromagnetic Induction Heating ◽  
Induction Heating System

In this work, the dimensions of a furnace for melting of ferrous alloys were determined. The furnace has an electromagnetic induction heating system. In addition, the parameters of electrical power supply such as frequency and power were calculated. A 5kg cast steel mass with a density of 7.81 kg / dm3 was proposed. This corresponds to a crucible volume of 0.641 dm3. The frequency was obtained from tables, which take into account the diameter of the crucible, and its value was 1 KHz. The energy consumption was determined with the heat required to bring the steel to the temperature of 1740 K, the energy losses through the walls, bottom and top of the crucible. This value was divided between the heating time (30 minutes) and resulted in a power of 4.5 KW. The development of the calculations shows that the induction heating is an efficient process and allows a fast melting of ferrous alloys.

scholarly journals A Novel Shape Memory Plate Osteosynthesis for Noninvasive Modulation of Fixation Stiffness in a Rabbit Tibia Osteotomy Model

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Christian W. Müller ◽  
Ronny Pfeifer ◽  
Karen Meier ◽  
Sebastian Decker ◽  
Janin Reifenrath ◽  
...  
Keyword(s):  
Shape Memory ◽  
Induction Heating ◽  
Electromagnetic Induction ◽  
Plate Osteosynthesis ◽  
Bending Stiffness ◽  
Niti Sma ◽  
Additional Surgery ◽  
Rabbit Tibia ◽  
Electromagnetic Induction Heating

Nickel-titanium shape memory alloy (NiTi-SMA) implants might allow modulating fracture healing, changing their stiffness through alteration of both elastic modulus and cross-sectional shape by employing the shape memory effect (SME). Hypotheses: a novel NiTi-SMA plate stabilizes tibia osteotomies in rabbits. After noninvasive electromagnetic induction heating the alloy exhibits the SME and the plate changes towards higher stiffness (inverse dynamization) resulting in increased fixation stiffness and equal or better bony healing. In 14 rabbits, 1.0 mm tibia osteotomies were fixed with our experimental plate. Animals were randomised for control or induction heating at three weeks postoperatively. Repetitive X-ray imaging and in vivo measurements of bending stiffness were performed. After sacrifice at 8 weeks, macroscopic evaluation,µCT, and post mortem bending tests of the tibiae were carried out. One death and one early implant dislocation occurred. Following electromagnetic induction heating, radiographic and macroscopic changes of the implant proved successful SME activation. All osteotomies healed. In the treatment group, bending stiffness increased over time. Differences between groups were not significant. In conclusion, we demonstrated successful healing of rabbit tibia osteotomies using our novel NiTi-SMA plate. We demonstrated shape-changing SME in-vivo through transcutaneous electromagnetic induction heating. Thus, future orthopaedic implants could be modified without additional surgery.

scholarly journals Finite element simulation of delamination process in composite materials

2019 ◽  
Vol 299 ◽  
pp. 06003
Author(s):  
Emilia Sabău ◽  
Cristian Vilău ◽  
Paul Bere ◽  
Adrian Popescu
Keyword(s):  
Finite Element ◽  
Composite Materials ◽  
Finite Element Simulation ◽  
Glass Fibers ◽  
Polymeric Composite ◽  
Composite Plates ◽  
Propagation Model ◽  
Laboratory Equipment ◽  
Element Simulation ◽  
Manufacturing Technologies

The delamination phenomenon is undesirable and constitutes a major problem. In this paper, a study of delamination for composite materials reinforced with unidirectional glass fibers in polyester matrix is analyzed. The composite plates were made using two manufacturing technologies, hand lay-up and compression hand lay-up process. The study found out the maximum value of the force where delamination occurs and the specific delamination resistance. Also, it’s done a finite element simulation of delamination process at polymeric composite materials under transverse loads. The propagation model ofdelamination was implemented in finite element ANSYS software. There are presented the used materials for samples, the manufacturing process, laboratory equipment and the experimental results.

Direct silicon-silicon bonding by electromagnetic induction heating

2002 ◽  
Vol 11 (4) ◽  
pp. 285-292 ◽  
Author(s):  
K. Thompson ◽  
Y.B. Gianchandani ◽  
J. Booske ◽  
R.F. Cooper
Keyword(s):  
Induction Heating ◽  
Electromagnetic Induction ◽  
Electromagnetic Induction Heating ◽  
Silicon Silicon
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