QFD Assembly / Part Deployment includes:

Quality Function Deployment (QFD) is a structured, multi-phase methodology. The second phase, known as Assembly/Part Deployment, directly follows the initial Product Planning (House of Quality) phase. In this second phase, the critical product characteristics (the "WHATs" from the first phase) are systematically translated and broken down into critical part or assembly characteristics. This process is a decomposition, ensuring that the design of individual components directly contributes to achieving the overall product requirements defined by the customer. The output of this phase becomes the input for the subsequent Process Planning phase.

A. Planning a product is the first phase of QFD, often called the House of Quality, which precedes Part Deployment.

B. Determining critical processes is the third phase of QFD (Process Planning), which uses the outputs of Part Deployment as its input.

D. Creating process control methods is the fourth and final phase of QFD (Production Planning), which follows Process Planning.

1. Hauser, J. R., & Clausing, D. (1988). The House of Quality. Harvard Business Review, 66(3), 63–73. In the section "The Four-Phase Approach," the article describes the second phase as "Part deployment," where engineering characteristics are cascaded down to the parts level.

2. Chan, L. K., & Wu, M. L. (2002). Quality function deployment: A literature review. European Journal of Operational Research, 143(3), 463-497. Section 2.2, "The QFD process," states: "Phase II (part deployment) translates the critical product characteristics into critical part characteristics." This directly supports the concept of decomposition. https://doi.org/10.1016/S0377-2217(02)00178-9

3. Cristiano, J. J., Liker, J. K., & White, C. C. (2000). Customer-driven product development through quality function deployment in the U.S. and Japan. Journal of Product Innovation Management, 17(4), 286-308. The article's description of the QFD process (p. 288) outlines how product-level design requirements are deployed to the component level in the second matrix. https://doi.org/10.1111/1540-5885.1740286