A comparison between two methods of fatigue lifetime predictions for random loads
department or school: Applied Science, Faculty of
department or school: Mechanical Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Jonk, Eric Frederick
issued: 2010-07-10T17:05:31Z
issued: 1986
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: The purpose of this thesis is to compare the results obtained from two different methods to account for fatigue, the Root Mean Square (RMS) and the Histogram, to determine which method better represents reality. The test procedure used subjected compact tension specimens to randomly selected block loads, then compared the actual lifetimes obtained by experiment to the lifetimes predicted by the methods. A statistical analysis was attempted to determine which method was superior. The results of the analysis suggest that the RMS model is superior. However, no firm conclusions can be drawn, since the data obtained suggest that the Paris Law parameters used in the analysis are possibly biased.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/26302
note: A C O M P A R I S O N B E T W E E N TWO M E T H O D S O F F A T I G U E L I F E T I M E P R E D I C T I O N S F O R R A N D O M L O A D S B y E R I C F R E D E R I C K J O N K B . S c , T h e U n i v e r s i t y o f C a l g a r y , 1 9 8 2 A T H E S I S S U B M I T T E D I N P A R T I A L F U L F I L L M E N T T H E R E Q U I R E M E N T S F O R T H E D E G R E E O F MASTER OF APPLIED SCIENCE i n T H E F A C U L T Y O F G R A D U A T E S T U D I E S ( D E P A R T M E N T O F M E C H A N I C A L E N G I N E E R I N G , T H E U N I V E R S I T Y O F B R I T I S H C O L U M B I A ) We a c c e p t t h i s t h e s i s a s c o n f o r m i n g t o t h e r e q u i r e d s t a n d a r d T H E U N I V E R S I T Y O F B R I T I S H C O L U M B I A S e p t e m b e r , 1 9 8 6 (£> E r i c F r e d e r i c k J o n k , 1 9 8 6 In presenting this thesis in partial fulfilment of the requirements for an advanced degree at the University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the head of my department or by his or her representatives. It is understood that copying or publication of this thesis for financial gain shall not be allowed without my written permission. Department of The University of British Columbia 1956 Main Mall Vancouver, Canada V6T 1Y3 Date Ar^<h l\. tftL DE-6(3/81) Abstract The purpose of t h i s thesis i s to compare the r e s u l t s obtained from two d i f f e r e n t methods to account f o r fatigue, the Root Mean Square (RMS) and the Histogram, to determine which method better represents r e a l i t y . The te s t procedure used subjected compact tension specimens to randomly selected block loads, then compared the actual l i f e t i m e s obtained by experiment to the l i f e t i m e s predicted by the methods. A s t a t i s t i c a l analysis was attempted to determine which method was superi…
has type: Thesis/Dissertation
is shown at: 10.14288/1.0096911
language: eng
degree discipline: Mechanical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/26302