Sheet Metal Forming Thesis

Sheet Metal Forming Thesis-87
The strains at the pole of the bulge of the work pieces were determined analytically using the Jovane analytical method, this was achieved by measuring the height of the pole of the bulge for every applied hydraulic pressure for a particular die.

The strains at the pole of the bulge of the work pieces were determined analytically using the Jovane analytical method, this was achieved by measuring the height of the pole of the bulge for every applied hydraulic pressure for a particular die.The surface topography at the micro level was found by scanning the bulge of the sample using an atomic force microscope in for both the 5 mm die and the 11-mm diameter dies and that roughness decreases as the diameter decreases for similar strains.more Flex sensor has multiple applications like most sensors.

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In geology, the sensor was used to identify landslides remotely.

Also flex sensor is used in creating a musical instrument that can be played by deforming and bending the instrument, to encourage experimentation to create interesting musical effects.

The effect of the die diameter on the surface topography was also...

more In this study, the relationship between surface topography and strain was established for annealed 0.2 mm thick AISI 304 stainless steel sheet that had been hydroformed.

There was a continuous hardness enhancement by increasing the number of the ECAR passes.

After the third pass, the amount of hardness raised by 73% in comparison with the annealed sample.Flex sensor has multiple applications like most sensors.Even though it is widely used as a goniometer in rehabilitation research, its applications can be seen in different fields like, human machine interfaces, geology and musical...Apart from these existing applications, this paper proposes another application to use the sensor to identify the dents on sheet metal panels, by recording flexure in two dimensions across the sheet.Hole expansion ratio (HER) is widely used to represent stretch-flangeability of sheet metal.https://doi.org/10.1177/1464420716655560 2 FLDs' level move downward, meaning that a reduction occurred in the forming limits of ECARed samples.The aim of this research was to introduce a simulation-based approach for determination of the Forming limit curve (FLC) in two-layer metallic sheets.In the fourth pass, the hardness reduced slightly, that was attributed to the strain saturation in room temperature and was followed by high surface cracks.In the annealed condition, the average grain size was 45µm, and after the third ECAR pass, this amount was reduced to 10µm.The effect of the die diameter on the surface topography was also examined.Sheets were bulged using stepwise application of hydraulic pressure; forcing the sheet metal through 5 mm and 11 mm diameter open dies.

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