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DMAIC and DMADV are two Lean Six Sigma methodologies that aim to improve business processes. Although these methodologies have similarities, they are individual strategies adopted to ensure business approaches are effective. Lean Six Sigma methodologies are adaptable due to constant economic development, with which businesses need to keep up. Companies are always looking for ways to be more successful than their competitors, thus productivity and business process improvement is significant.
DMAIC is an important component of Lean Six Sigma, yet it can also operate independently of Lean Six Sigma. DMAIC is used to develop business processes using a statistical approach that tracks the initial application and impact of a change. DMAIC aims to ensure that change is maintained, beyond implementation and aftermath, in order to extract the most out of the change. DMAIC is comprised of five phases that are repeated until the desired quality level is attained:
Define the issue and identify the resources, limits and goals of a project. Consider customer requirements.
Measure the workings of the current process by collecting data.
Analyse the data in order to identify what is stagnating process performance and determine cause-and-effect relationships.
Improve the process by using the collected data to apply improvements. Carry out tests to examine the impact of the improvement.
Control the new process to ensure problems have been corrected and maintained.
DMADV is used primarily for developing new processes, services, or products, hence it is an alternative procedure to DMAIC. DMADV can also be applied to existing products, yet DMADV focuses mainly on the advancement of new products. DMADV conducts analysis early on to establish the significant components of new services and products. The five key phases are:
Define the purpose and goals of a new project, and ensure customer requirements are considered.
Measure CTQs (Critical to Quality) to identify important elements by evaluating customer requirements, product capabilities, and design components etc.
Analyse ideas to select the best design for meeting project objectives.
Design the decided new design.
Verify the acceptability of the new design to stakeholders. Conduct test runs to ensure a high-quality design.