DISCUSSION
The results obtained from the experiment were almost like the theoretical values of the
specimens used. From the results of ultimate tensile strength as shown in the above bar
graph on the result section it is evident that material that is hard was the strongest
material as compared to the one that is brittle and the one that is stiff as the tensile
strength it is mostly higher at brittle material. It can also be seen that all the values had
a slight deviation from the theoretical values indicating that the data obtained was
consistent and the procedure used proved to be valid and repeatable. The yield strength
provides a good indication of the yield stress at the yield point. The yield stress and
tensile strength of material that is hard l were much higher than those of brittle and stiff
material. The graph of the type of material versus the stiffness indicates that material
that propagates rapidly experiences much stiffness. The graph shows that stiffness of
material depends on the material. It also indicates that materials with the young’s
modulus of material that is stiffer was also several times more to that of a material that
is hard. The difference in the mechanical properties of the two materials can be
explained by the difference in the atomic structure of the materials. Material one has
more desirable properties for the application in the construction industry while material
two has properties that are desirable in the textile industry were strength. Although there
are certain conditions that may cause errors when one is conducting this tensile
strength experiment. Errors may be caused by using different material that have
different mechanical properties, in this case there wont be an theoretical accuracy of
the experiment. Performing the experiment under different process variables may cause
errors as some material may be exposed to different environmental conditions causing
the material to differ before it could go through an experiment.