Design for Six Sigma is used to perfect products and processes before use or release. When a new product design or new process design is needed and expected to perform at a six sigma level from the start or level considered to be “perfect” for the company or industry.
The intention of DFSS is to bring such new products and/or services to market with a process performance of around 4.5-sigma or better, for every customer requirement. This implies an ability to understand the customer needs and to design and implement the new offering with the reliability of delivery before launch rather than after!
One popular Design for Six Sigma methodology is called DMADV. The five phases of DMADV are defined as:
There are a few other known methodologies of DFSS such as DCCDI and IDOV. DCCDI is defined as Define, Customer Concept, Design and Implement. You can see that there are many similarities between these phases and the DMADV phases.
IDOV is a well-known design methodology, especially in the manufacturing world. The IDOV is defined as:
The basic difference lies in the fact that DMAIC is a methodology that focuses on bringing about improvements to the existing products and services of the organisation, whereas DFSS aims at designing a new defect-free product or service to meet CTQ factors that will lead to customer satisfaction.
DMAIC focuses on detecting and solving problems with existing products and services, while the DFSS approach is that of preventing a problem.
Some people believe that DFSS is only applicable in manufacturing and for designing a new product, but it is not true. Design traditionally has been associated with products much more than for services, however, this is changing as companies realise that every product has associated services. A full approach to DFSS will consider every aspect from introducing a new product or service right through to ongoing commercialisation.
The main tools applied in a DFSS project through any of the DFSS methodologies may include:
Please contact us if you need more details on how our expert team can assists you in training and developing a new defect-free process/product/service using DFSS.
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