Diagnostic Surveys

 

Quality Assurance Analytical Methods

Design of Experiments
Objective
: Conduct statistical analysis on effect of various factors on a variable.
Application of This Method:
  • Determined optimal process conditions for customer satisfaction and product performance.
  • Determined optimal material mix for product performance.

Statistical Process Control
Objective: Use statistics to monitor process and identify when processes are out of control
Application of This Method:

  • Monitored production processes to determine and assess performance.
  • Reviewed Statistical Process Control results to identify improvements.
  • Identified root causes of variation in production processes.

Repeatability and Reproducibility Studies
Objective: Evaluate test methods to ensure same results are obtained from the same individual and that the results are the same when tested by multiple individuals.
Application of This Method:

  • Determined if present test methods were acceptable.
  • Evaluated test equipment and methods.
  • Evaluated new test equipment and methods after equipment changes.

Correlation Analysis
Objective: Evaluate relationship between two variables.
Application of This Method:

  • Used this technique to determine trend of two variables.
  • Evaluated cause and effect of two process variables.
  • Used for analyzing process output affected by input variables.

Taguchi Methods
Objective: Conduct designed experiments to determine the effect of variables on on a process.
Application of This Method:

  • Used to evaluate methods of increasing production by assessing optimal mix of process variables.
  • Identified causes of variation for product design to significantly lower production costs.


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