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Fatigue life and crack growth analysis of keyhole specimen / Fua Wai Loon

By:

Fua, Wai Loon

Material type: Text

TextPublication details: Kuantan, Pahang : UMP, 2010Description: xiv, 39 p. : ill. (some col.) ; 30 cm.+ 1 computer discISBN:

THE0005749(Local)

Other title:

Fatigue life and crack growth analysis of keyhole specimen [electronic resource]

Subject(s):

Dissertation note: Project paper (Bachelor of Mechanical Engineering) -- Universiti Malaysia Pahang - 2010 Abstract: This report deals with the prediction of fatigue life and crack growth for keyhole specimen using variable loading amplitude. The objective of this report is to predict the fatigue life and crack growth of keyhole specimen. The steel such as MANTEN and RQC100 were considered the keyhole materials. The structural three-dimensional solid modeling of keyhole specimen was developed using Solid work. The finite element model and analysis were performed using PATRAN and NASTRAN software. Predicted result is validated with existing experimental result. In addition, the fatigue life was predicted using the strain-life approach subjected to variable amplitude loading. From the results, it is observed that SAETRN loading gives the most conservative results for strain-life method. It is concluded that SAETRN loading history is the most conservative method compared to SAESUS and SAEBKT loading history. RQC100 has a longer crack initiation life but shorter crack propagation life than MANTEN. Apparently, MANTEN more ductile than RQC100. The RQC100 is suitable material of keyhole.

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Holdings ( 2 )
Title notes ( 3 )

Holdings
Item type	Current library	Call number	Copy number	Status	Date due	Barcode
Final Year Report	UMPLIB PEKAN	TA418.38 .F83 2010 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000053857
Final Year Report	UMPLIB PEKAN	CD 4944 \| TA418.38 .F83 2010 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000053858

Project paper (Bachelor of Mechanical Engineering) -- Universiti Malaysia Pahang - 2010

Bibliography : p. [38]-39

This report deals with the prediction of fatigue life and crack growth for keyhole specimen using variable loading amplitude. The objective of this report is to predict the fatigue life and crack growth of keyhole specimen. The steel such as MANTEN and RQC100 were considered the keyhole materials. The structural three-dimensional solid modeling of keyhole specimen was developed using Solid work. The finite element model and analysis were performed using PATRAN and NASTRAN software. Predicted result is validated with existing experimental result. In addition, the fatigue life was predicted using the strain-life approach subjected to variable amplitude loading. From the results, it is observed that SAETRN loading gives the most conservative results for strain-life method. It is concluded that SAETRN loading history is the most conservative method compared to SAESUS and SAEBKT loading history. RQC100 has a longer crack initiation life but shorter crack propagation life than MANTEN. Apparently, MANTEN more ductile than RQC100. The RQC100 is suitable material of keyhole.