230321 - Case Studies Flashcards
What is a case study?
A document that describes an engineering challenge and includes background information and evidence.
What is the root cause of the problem? What would you do in this situation?
What are the problems that usually arise with case studies?
Insufficient and unprecise information.
Ticking clock.
What are the effects of failure?
Money is lost due to the production stopping and the repair costs, also this could represent a risk for people.
What is the case of the Heilbronn Phantom?
DNA had been found in cotton swaps in several countries from 1993 to 2009, and supposedly this came from a killer related to several crimes ranging from burglaries to homicides. The police from three countries looked for the killer and in the end it resulted that the DNA came from a worker in the factory that manufactured the cotton swaps.
Similar to Heilbronn case in teacher’s former company.
The teacher had a young engineer that demonstrated in CATIA that a collision could not happened by doing a simulation. The company spent 100 thousand Euros in investigating the reasons of the collision in France.
Root Cause: There was only a problem with the painting that happened during the mounting of the part, no collision.
Characteristics of root cause:
Clearly a major cause of the problem, no better alternative to the cause.
It can be resolved and resolution will not create new problems.
What is the 5why technique?
Used in the 6 Sigma Analysis. Developed by Toyota’s founder.
A series of 5 whys? Why did my car stopped? Why didn’t it has gas? …
