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ITS » Undergraduate Theses » Teknik Perkapalan
Posted by anis at 25/11/2008 18:00:28  •  14926 Views


PERHITUNGAN FATIGUE LIFE MATERIAL MENGGUNAKAN PENDEKATAN J-INTEGRAL

MATERIAL FATIGUE LIFE CALCULATION USING J-INTEGRAL APPROACH

Author :
Darmadi 




ABSTRAK

Penelitian ini dilakukan untuk membandingkan estimasi perhitungan fatigue life struktur high tensile steel AH-32 dengan metode eksperimental laboratorium dan simulasi komputer. Berdasarkan hukum Paris diketahui bahwa jumlah siklus pembebanan yang dibutuhkan oleh material dengan retak awal tertentu sampai retak akhir yaitu dimana material mengalami kegagalan dapat diestimasi. Dalam Tugas Akhir ini akan dibandingkan estimasi perhitungan besarnya fatigue life material high tensile steel AH-32 berdasarkan hasil pengujian laboratorium dengan hasil simulasi dengan software berbasis finite element dengan menggunakan metode JIntegral. Pengujian yang dilakukan menggunakan spesimen compact tension dengan ketebalan 14 mm dan 20 mm. Pembebanan yang diberikan untuk masing-masing ketebalan spesimen adalah 34 kN dan 48 kN. Dari hasil pengujian laboratorium diperoleh konstanta Paris C dan m yang selanjutnya digunakan untuk menghitung fatigue life material. Dari hasil pengujian laboratorium dan simulasi diketahui bahwa perhitungan faktor intensitas tegangan 2 kali lebih besar dari hasil pengujian.


ABSTRACT

This research is conducted to compare calculation fatigue life structure high tensile steel AH-32 estimation with experimental laboratory and computer simulation method. Pursuant to law Paris known that the encumbering cycle amount required by material barstly early final barst certain until that is where material experience of failure can be estimated. In this Final Project will be compared to a calculation estimation of high tensile steel AH-32 material of pursuant to laboratory examination result with the simulation result by software base on finite element by using J-Integral method. Examination has done use compact tension specimen thickly 14 mm and 20 mm. Loading given to each thick of specimen is 34 kN and 48 kN. From laboratory examination result obtained Paris constant C and m that later on used to calculate fatigue life material. From simulation and laboratory examination result known that stress intensity factor calculation is twice greater than laboratory examination.



KeywordsFatigue life ; J-Integral ; Material
 
Subject:  Mekanika terapan
Contributor
  1. Ir. Soeweify, M.Eng
Date Create: 25/11/2008
Type: Text
Format: pdf.
Language: Indonesian
Identifier: ITS-Undergraduate-3100007030141
Collection ID: 3100007030141
Call Number: RSPe 620.112 6 Dar p


Source
Undergraduate theses, DEPARTMENT OF NAVAL ARCHITECT RSPe 620.112 6 Dar p, 2007

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Copyright @2007 by ITS Library. This publication is protected by copyright and permission should be obtained from the ITS Library prior to any prohibited reproduction, storage in a retrievel system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to ITS Library




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ITS-Undergraduate-3100007030141-2445.pdf




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