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Stress Analysis

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Submitted By princejan7
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In this section, please describe the experiment in full detail, how it was carried out, equipment, temperatures, metal / fluid concentrations, etc.

If you wish, and only in the case that you have followed the experimental procedure as outlined in the lab manual, you can simply make a reference to the lab manual. However, if your actual experiment deviated from the procedures given by the lab manual, you must write your own experimental procedure. If some parts of the experiment were already completed for you by the lab instructors, mention it. If you omitted some portions of the lab, mention it and explain why you did so.

For example:

In order to investigate the influence of all necessary casting parameters, foam patterns were assembled. The patterns were cut from expandable polystyrene (EP) slabs of known density using hot-wire. For this research, two types of foam slabs were used, low-density (LD: 0.021 g/cm3, 1.3 pcf) and high-density (HD: 0.026 g/cm3, 1.6 pcf). The pattern consisted of one pair each of thin (3.2 cm x 10 cm x 1 cm) and thick (3.2 cm x 10 cm x 1.5 cm). Sections were assembled together with hot melt glue.

Following assembly, the pattern was dipped in a ceramic slurry of known density (35 Be or 45 Be) followed by drying in a circulating hot-air oven. Thereafter, the pattern assembly was placed into a casting flask. Synthetic mullite (AFS 35 GFN) was rained into the flask and compacted at 1g for 1 minute.

The flask was designed with two compartments, thus enabling preferential heating of mold medium in one of the compartments. Thus, two bars were maintained at 50 C while the other two were maintained at room temperature.

In order to investigate

The farther away from the quenched end that the hardness extends, the higher the hardenability.

Apparatus:
Rockwell Hardness Tester, Treetall Furnace, Jominy quenching fixture, a

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