9.5 Quality
Control Techniques
QFD (Quality Function Deployment)
- focusing and thorough planning of quality expectations
(using the "House of Quality" model),
- planning schemes to translate market / customer
expectations into action for production that is as free
from failure as possible, in four phases:
- product strategy,
- product specification,
- process specification and
- process protection.
DOE (Design of Experiments)
- statistical experiment planning for the systematic and
efficient accumulation of information for continuous quality
improvement. For this purpose, methods such as
- Taguchi,
- Shainin and
- factor experiment plans are applied.
FMEA (Failure Mode and Effects Analysis)
- the analysis of failure modes and effects, or, more precisely:
detection and neutralisation of sources of error.
- The most well-known/most widely used applications are
- development FMEA and
- process FMEA.
SPC (Statistical Process Control)
- Statistical process regulation using quality rule cards
and
- systematic improvement of processes through intervention
when process parameter limits are exceeded. This includes
the capability testing of:
- measuring instruments and
- equipment.
Poka Yoke
- Avoiding errors in processes through the provision of
specified routines. This means creating an attitude and
preventing errors in the process or on the product that
occur as a result of human error.
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