Inlämning av Examensarbete / Submission of Thesis

Gudeta Berhanu BTH-AMT-EX--2011/D-01--SE, pp. 76. ING/School of Engineering, 2011.

The work

Författare / Author: Gudeta Berhanu
Titel / Title: Vibration Durability Testing and Design Validation Based on Narrow Frequency Band
Abstrakt Abstract:

Existing vibration durability testing methods for a component is conservative in verifying the fatigue strength of a component. They more of typify the damaging potential of the real world vibration, instead of the component under test. This thesis proposes a new vibration durability testing method that works by giving emphasis to the dynamic behaviour of the component. From several tests carried out at different narrow frequency bands, it develops a diagram that shows the maximum limit of a component towards vibration. Design verification will then be made by comparing the result with the real world vibration. To this aim, a test has been carried out on a truck alternator at four different frequency regions and a vibration profile has been extracted by combining them together. Then, comparing the result with the real world vibration profile, the design of the alternator has been verified. Accordingly, the alternator shows less strength at low frequency regions.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\Structural Mechanics

Nyckelord / Keywords: Vibration testing, Narrow frequency band, Palmgren Miners rule, Rain flow cycle counting, S-N curve, Fatigue

Publication info

Dokument id / Document id: houn-8n4u2r
Program:/ Programme Masters Programme in Mechanical Engineering 120 ECTS
Registreringsdatum / Date of registration: 10/30/2011
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Holger Dreher (Development Eng'g) and Dan Magnusson (Senior Eng'g) and
Examinator / Examiner: Ansel Berghuvud
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00
I samarbete med / In co-operation with: Scania

Files & Access

Bifogad uppsats fil(er) / Files attached: bth2011berhanu.pdf (2172 kB, öppnas i nytt fönster)