1. Choose a graphic method
Using a graphic mode, visualize both the service functions (SF) and find the corresponding technical functions (TF); you need to understand the interactions between the product and its use in a specific environment.
1.1 Search by "function tree decomposition" (graphical method)
Organizing service (FS) and technical (FT) functions by levels (or ranks), in the form of a graph, requires functions to be prioritized and linked together.
This method is described in greater detail in the tree of functions sheet
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Choose a graphic method
Study of "dissatisfactions" with the existing product
Bibliography
Also in our database
Regulatory references
AFNOR NF X 50-100 November 2011: Value Management – Functional analysis, fundamental characteristics – Functional analysis: functional analysis of the need (or external) and technical/product functional analysis (or internal) – Requirements for deliverables and implementation procedures
AFNOR NF X 50-151 September 2007: Value Management – Functional expression...
Websites
The " Sciences de l’Ingénieur " website provides comprehensive examples of functional analysis. This link will take you directly to the list of available examples. In the "Resources" tab, type in the keyword "Functional analysis".
The INPI website provides detailed explanations at...
Acronyms and abbreviations
AF: functional analysis
AFE: external functional analysis
AFI: internal functional analysis
FAST: FunctionAnalysis System Technic
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