Study Compares DMADV and IDOV Frameworks for Defect-Free Systems Design

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A research monograph by Daniel Shaeffer, published by the Shaeffer Institute for Systems Architecture and archived on Zenodo, examines two Design for Six Sigma methodologies used in complex systems engineering. The paper argues that traditional Six Sigma's DMAIC cycle breaks down in greenfield system development because it relies on data from existing operational processes. To address this gap, two DFSS alternatives emerged: DMADV and IDOV, which aim to prevent defects during the architectural design phase rather than correcting them later. Shaeffer identifies structural weaknesses in DMADV, including premature measurement requirements and a conflation of verification and validation, which can anchor new designs to outdated constraints. The study maps both methodologies against the ISO/IEC/IEEE 15288 systems engineering lifecycle to assess how well each aligns with hierarchical decomposition and system verification processes.

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