Evaluation of fatigue strength for the reliability of parts produced by direct metal laser sintering (DMLS)
by C.D. Naiju, M. Adithan, P. Radhakrishnan
International Journal of Rapid Manufacturing (IJRAPIDM), Vol. 1, No. 4, 2010

Abstract: This work presents the results of a study to determine the reliability of components manufactured by direct metal laser sintering (DMLS) for fatigue strength. A standard procedure and specimen according to IS 5075-1986 had been used in the experiment. Using Taguchi's experimental design techniques, an orthogonal array of L4 experiments had been developed. Fatigue testing was carried out and analysis of variance (ANOVA) technique was employed to investigate the process parameters in order to identify the main process parameter that affects the performance of the fatigue component. It has been found that scan spacing had more influence on fatigue strength as compared to sintering speed and hatch type. The two-parameter Weibull distribution was adopted to find the reliability of the manufactured components. The Weibull shape parameter and scale parameter was estimated and found approximately by a normal distribution. Micro structural analysis shows that there is a better bonding between the materials when the sintering speed is reduced.

Online publication date: Tue, 19-Oct-2010

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Rapid Manufacturing (IJRAPIDM):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com