ISTANBUL TECHNICAL UNIVERSITY GRADUATE SCHOOL OF SCIENCE ENGINEERING AND

134 Pages·2011·2.38 MB·English

IS TANBUL TECHNICAL UNIVERSITY  GRADUATE SCHOOL OF SCIENCE
ENGINEERING AN D TECHNOLOGY

FATIGUE CRACK GROWTH UNDER
NON-PROPORTIO NAL LOADING

M.Sc. THESIS

Nait MUTLU

Department of Mechanical Engineering

Solid Mechanics Programme

Thesis Advisor: Prof. Dr. Ata MUĞAN
Anabilim Dalı : Herhangi Mühendislik, Bilim
Programı : Herhangi Program
DECEMBER 2011

ISTANBUL TECHNICAL UNIVERSITY  GRADUATE SCHOOL OF SCIENCE
ENGINEERING AND TECHNOLOGY
FATIGUE CRACK GROWTH UNDER
NON-PROPORTIONAL LOADING

M.Sc. THESIS
Nait MUTLU
(503091528)
Department of Mechanical Engineering

Solid Mechanics Programme

Thesis Advisor: Prof. Dr. Ata MUĞAN
Anabilim Dalı : Herhangi Mühendislik, Bilim
Programı : Herhangi Program
DECEMBER 2011

İSTANBUL TEKNİK ÜNİVERSİTESİ  FEN BİLİMLERİ ENSTİTÜSÜ
ORANTISIZ YÜKLEME DURUMUNDA
YORULMA ÇATLAK BÜYÜMESİ
YÜKSEK LİSANS TEZİ
Nait MUTLU
(503091528)
Makina Mühendisliği Anabilim Dalı

Katı Cisimlerin Mekaniği Programı

Tez Danışmanı: Prof. Dr. Ata MUĞAN
Anabilim Dalı : Herhangi Mühendislik, Bilim
Programı : Herhangi Program
ARALIK 2011

Nait Mutlu, a M.Sc. student of ITU Graduate School of Science, Engineering and
Technology - student ID 503091528, successfully defended the thesis entitled
“FATİGUE CRACK GROWTH UNDER NON-PROPORTIONAL
LOADING”, which he prepared after fulfilling the requirements specified in the
associated legislations, before the jury whose signatures are below.

Thesis Advisor : Prof. Dr. Ata MUĞAN ..............................
İstanbul Technical University
Jury Members : Prof. Dr. Alaaddin ARPACI .............................
İstanbul Technical University
Prof. Dr. Zahit MECİTOĞLU ..............................
İstanbul Technical University
Date of Submission : 30 September 2011
Date of Defense : 07 December 2011

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FOREWORD
This thesis is submitted in partial fulfillment of the requirements for obtaining the
degree of Master of Since in mechanical engineering. The work was carried out at
the Department of Mechanical Engineering, Solid Mechanics, Technical University
of Denmark in Copenhagen during the period Agust 2010 to Agust 2011.
Supervision was received from Professor Dr. Viggo Tvergaard and associate
professor Christian Frithiof Niordson at DTU and Professor Dr. Ata Muğan at ITU as
university supervisors and Tore Lucht from MAN Diesel A/S as industrial
supervisor.
I am very grateful to all my supervisors for their outstanding guidance during the
project and my family.
I have had close collaboration with Chris Valentin Nielsen and I have been pleased
with always to get a positive and quick response from him when I have reported
errors and suggested improvements.
Finally I wish to thank colleagues and fellow PhD and MScD students at the
Department of Mechanical Engineering, Solid Mechanics for creating a friendly and
stimulating environment.

August 2011 Nait MUTLU
(Mechanical Engineer)

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