tensile testing report

ERRORS AND UNCERTAINTIES IN EXPERINMENTAL MEASUREMENTS

ELANKUMARAN NAGARAJAN

4TH DECEMBER 2011

SUMMARY

Experimentation is an important process that will be carried out on new theories, ideas, products and devices to validate them. Despite the quality of the experiment there will always be some uncertainties associated with the experimental data. These uncertainties arise due to a random or systematic error. The uncertainties associated with a simple cantilever beam experiment, in which the deflection of the beam due to the applied load is recorded with both a dial gauge and a potentiometer. With the most suitable measurements of beam deflection the average value of young’s modulus and the uncertainties associated with that is calculated. The results were in accordance with the theoretical predictions. The experiment revealed that by statistical analysis of the dataset and by repeating the experiments the random errors could be minimized.

Index Page number

• Introduction 3

• Theory 3

• Experimental method 4

• Results 5

• Discussion 6

• Conclusion 7

• Reference 7

Introduction

Experimentation is the most