SRC Forum - Message Replies
Forum: Reliability & Maintainability Questions and AnswersTopic: Reliability & Maintainability Questions and Answers
Topic Posted by: Reliability & Maintainability Forum
(src_forum@alionscience.com
)
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Original Message:
Posted by: chandu
(chandra_hari@rediffmail.com
)
Organization:Nagarjuna univeristy
Date posted: Tue Mar 4 6:33:32 US/Eastern 2003
Subject: PREDICITON OF PARAMETER
Message:
I have some laboratory data (accelerated test)for Grade 1 item and Grade 2 item, i have estimated parameters of weibull distribution. For the Grade 1 item i have field data and i have estimated the parameters of weibull distribution.
Here i have a problem in correlating the field data with laboratory data for grade 1 item. How can i correlate this Grade 1 data?
By using this same same logic How can one predict the field data parameters for Grade 2 ?
Please help me in this case....
Previous reply
Reply:
Subject: Correlating field life and lab data life
Reply Posted by: Hari
(chandra_hari@rediffmail.com
)
Date Posted: Tue Apr 1 6:28:40 US/Eastern 2003
Message:
Thank you very much for responding to my query.
I will give my data for grade 1: lab data:
on 7 samples:
80
42
43
72
49
44
87
And field failure data are as follows:
Mileage Total Producion number:1395
16346.3
28435.0
10428.1
3009.4
15973.1
14001.9
10241.3
11098.8
11098.8
8839.4
16953.1
20065.6
20017.5
For grade 2: lab data is on two samples:
538
537
I will be very grateful to you, if you provide the answer.
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