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- W1203836292 abstract "Fuel economy standards are getting increasingly stringent over the period of time. Automotive OEMs are required to pay penalties to the government if their vehicles fail to meet the Corporate Average Fuel Economy (CAFE) standards. One of the techniques to improve fuel economy is vehicle lightweighting. Hence, OEMs demand their suppliers to individual materials with increased strength to weight ratios. Advanced high strength steels (AHSS) may serve this purpose, but they have poor formability and high springback characteristics. Advanced high strength steels such as TRIP exhibit good formability but their high alloying content adversely affects their weldability and high cost of production makes it infeasible for these materials to be put to use on a large scale. Electrically assisted forming has been proposed as a means of reducing cold stamping tonnage, improved ductility and eliminating springback. The increasing maturity of research on electrically assisted forming has developed to a point where it can be introduced onto a manufacturing scale. The objective of this project is to study various parameters related to electrically assisted forming and translate a research level idea into a production level process. This will allow introduction of AHSS like Dual Phase steels into the automobile industry and help contribute to overall lightweighting of a vehicle, which, in turn, improves sustainability. Abram Pleta, Harshal Date, Dr. Laine Mears, Dr. Durul Ulutan Clemson University ICAR apleta@clemson.edu, hdate@clemson.edu, mears@clemson.edu, dulutan@clemson.edu, CONCLUSION AND FUTURE SCOPE: The results of wiping die test will help us further improvise on electrical assistance in forming, which, in turn will contribute toward vehicle lightweighting. Also, with optimized process parameters based on results, total energy consumption can be reduced and hence the cost of manufacturing, if put to use on a wide scale. This research can be extended to components other than seating assembly and will eventually contribute towards better sustainability in the industry. ACKNOWLEDGEMENTS: I would like to thank Gary Lee Mathis for fabrication of the die and would also extend my thanks to Ionic Technologies for performing heat treatment of steel. The results of springback and load characteristics for air bending on DP 780 steels are as shown below. Wiping die design and test: Wiping die test will allow us to investigate effects of varying electrical flow paths and path lengths in addition to the parameters already investigated in the above tests. This will allow for improvement in existing EA models and can potentially establish new models which will depend also on length of plastic deformation zone and thickness The test will be conducted on two DP 980 sheets 1 mm and 1.2 mm thick respectively. The figures alongside show the wiping die design and experimental plan; and the table shows an initial calculation of load reduction (non experimental) The table right below shows die force calculations based on the wiping die force formula by Kalpakjian Fmax = k UTS Lt2" @default.
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- W1203836292 date "2015-01-01" @default.
- W1203836292 modified "2023-09-27" @default.
- W1203836292 title "Electrically Assisted Augmentation of the Forming Process" @default.
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