Inlämning av Examensarbete / Submission of Thesis

Viswanath Ramireddy; Mukarram Hussain ISRN, pp. 72. TEK/avd. för maskinteknik, 2007.

The work

Författare / Author: Viswanath Ramireddy, Mukarram Hussain
ansel.berghuvud@bth.se
Titel / Title: Vibration Based Techniques for Young's Modulus Determination and Permenant Deformation Assesment
Översatt titel / Translated title: Vibration Based Techniques for Young's Modulus Determination and Permenant Deformation Assesment
Abstrakt Abstract:

This thesis work is devoted to low frequency vibration based method, with remote excitation and laser detection for nondestructive testing and characterization of sheet materials. By this method dynamic properties of different materials can be estimated from the measurement of the resonance frequency in flexural mode. Low Density Polyethylene (LDPE), Ethyl Acid Acrylic (EAA), Aluminium foil (Al) and Paperboard (PPR) are investigated in this work. It is observed that the method allows detection of permanent deformation in sheet materials loaded in tension, as well as determination of Young’s modulus with some exceptions. This study also confirms the use of the presented method for health monitoring of materials having no bending stiffness, developed in a previous work.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\Structural Dynamics
Maskinteknik - Mechanical Engineering\Structural Dynamics
Maskinteknik - Mechanical Engineering\Structural Dynamics
Nyckelord / Keywords: Resonance frequency, material characterization, remote excitation, nondestructive testing, Mechanical Properties.

Publication info

Dokument id / Document id:
Program:/ Programme Masters programme in Mechanical Engineering, 60 points
Registreringsdatum / Date of registration: 02/07/2007
Uppsatstyp / Type of thesis: D-Uppsats/Magister/Master

Context

Handledare / Supervisor: Lic.Etienne Mfoumou
etienne.mfoumou@bth.se
Examinator / Examiner: Dr. Ansel J Berghuvud
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: TEK/avd. för maskinteknik
S-371 41 Karlskrona
+46 455 38 50 00
I samarbete med / In co-operation with: BTH
Anmärkningar / Comments:

Viswanath Ramireddy,
LGH 17,Folksparkvagen 20,
37240,Ronneby,Sweden.
MObile-0046737328508