Enter Severity (S), Occurrence (O), and Detection (D) ratings to automatically calculate the Risk Priority Number (RPN) and receive a risk level recommendation.
The new AIAG-VDA FMEA form includes the following key fields:
| Step | Field | Description |
|---|---|---|
| Structure Analysis | Higher-Level Element | The system/subsystem containing the focus element |
| Focus Element / Lower-Level Element | Current analysis subject and its sub-components | |
| Function Analysis | Higher-Level Function | System-level function description |
| Focus Element Function / Lower-Level Requirement | Specific function and quantifiable performance requirements | |
| Failure Analysis | Failure Effect (FE) | Impact on higher system / end user |
| Failure Mode (FM) | How the focus element function fails | |
| Failure Cause (FC) | Root cause leading to the failure mode | |
| Risk Analysis | Current Prevention Control (PC) | Measures to prevent the cause from occurring |
| Current Detection Control (DC) | Means to detect the failure | |
| Severity (S) | 1-10 rating of effect severity | |
| Occurrence (O) / Detection (D) | 1-10 ratings of likelihood and detection ability | |
| Action Priority (AP) | H/M/L based on S-O-D combination lookup | |
| Optimization | Improvement Action | Specific risk reduction action |
| Responsible Person / Target Date | Owner and deadline for action execution | |
| Post-Improvement Rating and AP | Re-assessed risk level after implementation |
Foundation input for PFMEA; describes the sequence, inputs, and outputs of each operation.
Supporting tool for DFMEA; clarifies physical and functional boundaries inside and outside the analysis scope.
Identifies interaction interfaces between components (energy, material, information flow) for interface failure analysis.
Categorizes failure causes by 5M1E to ensure comprehensive cause analysis.
Top-down analysis of failure logic paths, complementing FMEA bottom-up analysis.
Identifies relationships between input signals, noise factors, control factors, and output responses.
| Term | Abbreviation | Definition |
|---|---|---|
| Failure Mode | FM | The manner in which a product or process fails to meet intended function or requirements |
| Failure Effect | FE | The consequence of a failure mode on the system, customer, or end user |
| Failure Cause | FC | The root cause that leads to the occurrence of a failure mode |
| Severity | S | Rating (1-10) of the seriousness of the failure effect |
| Occurrence | O | Rating (1-10) of the likelihood of the failure cause occurring |
| Detection | D | Rating (1-10) of the ability of current controls to detect the failure |
| Risk Priority Number | RPN | Product of S x O x D, used for risk ranking |
| Action Priority | AP | Risk level (H/M/L) determined by S-O-D combination |
| Prevention Control | PC | Measures that prevent the failure cause from occurring or reduce its frequency |
| Detection Control | DC | Means to discover the failure before product delivery |
| Special Characteristics | SC | Product/process characteristics affecting safety or regulatory compliance |
| Focus Element | FE | The product component or process step currently being analyzed |