Version 1
: Received: 28 February 2021 / Approved: 1 March 2021 / Online: 1 March 2021 (18:31:31 CET)
How to cite:
Huamaní Castro, N. Determination of the modulus of elasticity using a Smartphone and
mode of unsupport beam Euler-Bernoulli. Preprints2021, 2021030042. https://doi.org/10.20944/preprints202103.0042.v1
Huamaní Castro, N. Determination of the modulus of elasticity using a Smartphone and
mode of unsupport beam Euler-Bernoulli. Preprints 2021, 2021030042. https://doi.org/10.20944/preprints202103.0042.v1
Huamaní Castro, N. Determination of the modulus of elasticity using a Smartphone and
mode of unsupport beam Euler-Bernoulli. Preprints2021, 2021030042. https://doi.org/10.20944/preprints202103.0042.v1
APA Style
Huamaní Castro, N. (2021). Determination of the modulus of elasticity using a Smartphone and
mode of unsupport beam Euler-Bernoulli. Preprints. https://doi.org/10.20944/preprints202103.0042.v1
Chicago/Turabian Style
Huamaní Castro, N. 2021 "Determination of the modulus of elasticity using a Smartphone and
mode of unsupport beam Euler-Bernoulli" Preprints. https://doi.org/10.20944/preprints202103.0042.v1
Abstract
This paper presents the simplified and quick way to obtain an experimental measure of the modulus
of elasticity(E) of a piece of metal rod using the Smartphone microphone and through the experimental
configuration in mode of unsupport beam Euler-Bernoulli(E-B). To understand it, it is required to have
knowledge about flexural vibration of E-B beams and to know the analysis of the spectogram of the audio signal. The methodology consists in measuring the flexural resonance frequency through an app installed on a Smartphone and using the E formula deduced from the E-B theoretical framework. The results of the experimental measurements have a discrepancy of less than 5% with respect to the factory value, for a carbon steel rod with circular cross section using the impact excitation technique. It describes the precision and accuracy of the experimental measurement. It is useful, because it helps to classify the materials in the Faculty of Engineering and it helps to make a more efficient quality control.
Keywords
Modulus of elasticity; frequency spectrum; mic; Euler-Bernoulli equation
Subject
Computer Science and Mathematics, Applied Mathematics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
