BS EN 9300‑115:2018 pdf download.Aerospace series – LOTAR – LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data Part 115: Explicit CAD assembly structure.
8.1.6 Identification of parts and assemblies Each part and each sub assembly in the assembly structure must have a unique identifier. 8.2 Definition of verification level for EN 9300-115 The different verification levels correspond to the rules used during the verification. The different validation levels are: — EN 9300 115-Ingest-verification-level-0: No verification. This level of validation corresponds to a high level of risk of data or information loss; — EN 9300 115-Ingest-verification-level-1: Verification of the rules defined in 8.1 above. This is the usual level of validation; — EN 9300 115-Ingest-verification-level-2: Both the validation rules defined in 8.1 above and additional rules specific to the company and not described in 8.1.
9 Validation rules of an explicit CAD assembly structure 9.1 The Purpose of Validation Properties The validation of the explicit assembly structure should ensure that the following essential information are preserved: — the assembly structure nodes; — the assembly relationship composed by parent / child links and the geometrical transformation for each occurrence; — the file references; — the attributes of the nodes. For full archiving, the geometric validation properties can be used to validate the CAD assembly when the 3D models are available. The geometric validation properties for the assembly structure are described in 9.2.1 Geometric validation properties for assembly structure. In the case of full archiving where the 3D models are not available or in the case of incremental archiving, the Geometric Validation Properties based on the 3D model cannot be computed. The assembly validation properties must be computed using the assembly information. These assembly validation properties ensure the validation of the CAD assembly structure independently of the content of the external referenced files. The description of these validation properties is described in the 9.2.2 Assembly Validation Properties. In any case the validation properties (VP) must be computed in the source system with the native file. This VP must be written in the Archival Information Package (AIP), either in the STEP file or in the Preservation Description Information. Ingestion Validation: During ingest and after any conversion to STEP, the validation properties can be checked in order to ensure that the STEP file is valid. Ideally the VP are computed directly from the STEP file and compared with the VP come from the source data. If the deviation is under the predefined threshold, the source and archive (STEP) files are considered as equivalent. End‑to‑end validation: After retrieval and conversion to the target system, the VP must be computed from the imported data by the target system. This VP should be compared with the VP written to the AIP. If the deviation is under the predefined threshold, the original and the import file can be considered as equivalent.BS EN 9300‑115 pdf download.