Experimental Study on Micro-Friction Stir Welding of Dissimilar Butt Joints Between Al 1050 and Pure Copper

Mahdianikhotbesara

2022

Preprint

Self Cite

Among the advantages of the sheets used in the car body, it can mention the high strength, low thickness and suitable ductility. crack and wrinkling of the sheet are the most common types of defects in the drawing process. Therefore, it seems necessary to know the process factors that affect the sheet metal forming behavior. One of the critical tools of simulation and subsequent process optimization is the finite element method. In this research, with the help of AutoForm software, finite element simulation of the process is performed. After designing the appropriate Taguchi experiment, the parameters affecting the outputs, including thickness strain and surface strain on the production part, are investigated, and optimal values are introduced. The known effective parameters on the process output include the forming limit diagram, sheet strength, friction coefficient, die balancers, and used sheet thickness.

Section: Study Modelmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

A Numerical Study of Automotive Body Panel Draw Dies Defects Using Finite Element Simulation

Yadegari

Mahdianikhotbesara

2022

Preprint

Self Cite

“…While in conventional manufacturing methods the raw material should undergo several different manufacturing steps, such as forming, machining, welding, etc. [3] [4], AM can produce the components in a layer-based single step fabrication process [5] with desirable mechanical properties [6] [7][8]. Depending on the format of material feedstock, which can be powder, foil, paste, etc., the material feeding method to the AM process can be different [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Impact of Temperature and Material Variation on Mechanical Properties of Parts Fabricated with Fused Deposition Modelling (FDM) Additive Manufacturing

Mahdianikhotbesara²,

Yadegari³

2022

Preprint

Self Cite

Additive Manufacturing (AM) can be deployed for space exploration purposes, such as fabricating different components of robots’ bodies. The produced AM parts should have desirable thermal and mechanical properties to withstand the extreme environmental conditions, including the severe temperature variations on moon or other planets which cause changes in parts’ strengths and may fail their operation. Therefore, the correlation between operational temperature and mechanical properties of AM fabricated parts should be evaluated. In this study, three different types of polymers, including polylactic acid (PLA), polyethylene terephthalate glycol (PETG), and acrylonitrile butadiene styrene (ABS), were used in Fused Deposition Modeling (FDM) process to fabricate several parts. The mechanical properties of produced parts were then investigated at various temperatures to generate knowledge on the correlation between temperature and type of material. When varying the operational temperature during tensile tests, the material’s glass transition temperature was found influential in determining the type of material failure. Among the materials used, ABS showed the best mechanical properties at all temperatures due to its highest glass transition temperatures. The results of statistical analysis indicated the temperature as the significant factor on tensile strength while the type of material was not a significant factor.

Section: Introductionmentioning

confidence: 99%

Impact of Temperature and Material Variation on Mechanical Properties of Parts Fabricated with Fused Deposition Modelling (FDM) Additive Manufacturing

Mahdianikhotbesara

Yadegari

2021

Preprint

Self Cite

Additive Manufacturing (AM) can be deployed for space exploration purposes, such as fabricating different components of robots’ bodies. The produced AM parts should have desirable thermal and mechanical properties to withstand the extreme environmental conditions, including the severe temperature variations on moon or other planets which cause changes in parts’ strengths and may fail their operation. Therefore, the correlation between operational temperature and mechanical properties of AM fabricated parts should be evaluated. In this study, three different types of polymers, including polylactic acid (PLA), polyethylene terephthalate glycol (PETG), and acrylonitrile butadiene styrene (ABS), were used in Fused Deposition Modeling (FDM) process to fabricate several parts. The mechanical properties of produced parts were then investigated at various temperatures to generate knowledge on the correlation between temperature and type of material. When varying the operational temperature during tensile tests, the material’s glass transition temperature was found influential in determining the type of material failure. Among the materials used, ABS showed the best mechanical properties at all temperatures due to its highest glass transmission temperatures. The results of statistical analysis indicated the temperature as the significant factor on tensile strength while the change in material did not show a significant effect.