Tensile Test

3. Mechanical property testing:

The fabricated material is taken in to study for Tensile, Impact and Hardness measurements. Tensile strength was calculated using a universal testing machine. Impact strength is calculated in Impact testing machine and Hardness is calculated in Shore durometer machine. One identical sample was tested for each test and readings were tabulated.

Table1. Designation and composition of fabricated composites:

MATERIAL

NOTATION GLASS FIBER

(VOLUME %) EPOXY

(VOLUME %) FILLER

MATERIALS

(VOLUME %)

A 60% 40% Nil

B 60% 38% 2% Si

C 60% 38% 2% Charcoal

D 60% 36% 2% Si & Charcoal

E 60% 35% 5% Mica

3.1 Ultimate tensile strength:

Tensile test is one of the most widely used mechanical test. It is evaluated according to ASTM D638

An impact test determines the nature of materials when subjected to sudden force or impact. In an impact test, a specimen was machined or surface ground and is kept notch and allowed to strike and broken by a heavyweight. The quantity measured is the energy absorbed in breaking the specimen where Charpy impact strength was carried out in fabricated materials in accordance of ASTM A370 using impact tester under the room temperature. The dimensions are 10 mm × 10 mm × 55 mm and V- notch made at angle of 45° with a depth of 2 mm then the experiment was done and values were

From the obtained values, we can conclude that material filled with 2% charcoal shows the greatest tensile strength of 85.85 Mpa when related with another fabricated materials, but it seems to be more than the filled material FIGURE 1. The reason behind that is charcoal particles have many grooves and a hole that gives a large surface area for deposit of materials. So this paved way for the materials to adhere properly. Material E filled with mica shows better results when compared with material A, B and D. Because mica is highly tough and has immense tough and elastic power throughout its surface and produces good addition between filler and fiber. However whereas the material D the combination of 2% silicon carbide and activated charcoal exhibits 64.83 Mpa. This is because of improper reaction that takes place between that and so the results were low. Addition of charcoal increases the strength of the fabricated materials due to no free movement of electrons