Fault Tree Analysis Product Configuration very basic & quickly made. References: http://en.wikipedia.org/wiki/Fault_tree_analysis http://www.google.com.bd/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&cad=rja&uact=8&ved=0CEoQFjAF&url=http%3A%2F%2Fwww.hq.nasa.gov%2Foffice%2Fcodeq%2Frisk%2Fdocs%2Fftacourse.pdf&ei=vzJ4VLGuDc78ugTE44HgAg&usg=AFQjCNFs9-gDEmS1v7Kw9zCT6ADoVQvsCw&sig2=jMSLGoI2lyAYQQkJ9r_xoQ&bvm=bv.80642063,d.c2E http://en.wikipedia.org/wiki/Knowledge-based_configuration

1. Fault Tree Analysis
Product Configuration
(applications of BDD)
Sanjay Saha
MSc. (1st year)
University of Dhaka

2. Fault Tree Analysis
11/28/2014 Sanjay Saha, mail_sanjaysaha@yahoo.com 2

3. Fault Tree Analysis: Intro
• a Systematic and Stylized Process
• Deductive
• From an initializing event
• To the base causes of the event
• Combination of events
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4. Fault Tree Analysis: How?
• An event first occurs
• The event is resolved into two immediate and
necessary causal events.
• The event is related to causal events using
appropriate logic
• To the base causes of the event
• Repeated until basic causes are found.
11/28/2014 Sanjay Saha, mail_sanjaysaha@yahoo.com 4

5. Fault Tree Analysis: How?
• An undesired event is defined
• The event is resolved into its immediate
causes
• This resolution of events continues until basic
causes are identified
• A logical diagram called a fault tree is
constructed
• Showing the logical event relationships
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6. Fault Tree Analysis: Why?
• To exhaustively identify the causes of a failure
• To identify weaknesses in a system
• To assess a proposed design for its reliability or safety
• To identify effects of human errors
• To prioritize contributors to failure
• To identify effective upgrades to a system
• To quantify the failure probability and contributors
• To optimize tests and maintenances
11/28/2014 Sanjay Saha, mail_sanjaysaha@yahoo.com 6

7. Fault Tree Analysis: Roles
• FTA is used to resolve the causes of system failure
• FTA is used to quantify system failure probability
• FTA is used to evaluate potential upgrades to a
system
• FTA is used to optimize resources in assuring system
safety
• FTA is used to resolve causes of an incident
• FTA is used to model system failures in risk
assessments
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8. Fault Tree Analysis: Structures(1/3)
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9. Fault Tree Analysis: Structures(2/3)
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10. Fault Tree Analysis: Structures(3/3)
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11. Fault Tree Analysis: Example(1/4)
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12. Fault Tree Analysis: Example(2/4)
11/28/2014 Sanjay Saha, mail_sanjaysaha@yahoo.com 12

13. Fault Tree Analysis: Example(3/4)
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14. Fault Tree Analysis: Example(4/4)
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15. Product Configuration
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16. Product Conf. : Intro
• Also known as knowledge-based
configuration
• Activity of customizing
• To meet the needs of a particular customer
• A fixed set of well defined components
• Different constraints
• Result: List of instances
component
Product
component
component
component
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17. Product Conf. : Example
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