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  5. New Japan-oriented ISO Standard Issued for Equivalence Validation for Product Data

New Japan-oriented ISO Standard Issued for Equivalence Validation for Product Data

The standard will bolster technical foundations for the Connected Industries policy

December 17, 2018

Digitized product data, which are created while using CAD, CAM, CAE and/or other digital technologies, are indispensable for designing and developing products in the manufacturing industry, including the automobile, aircraft, and electrical and electronics industries. Product shapes and other data once created are converted and utilized in various discrete software suites and IT systems. Therefore, confirming the reliability of converted product data (equivalence validation) is necessary in product development.

ISO 10303-62 (a standard governing equivalence validation of product data) is a standard proposed by Japan that will guarantee the reliability of data, so that product data can be utilized confidently at any stage of product development. This standard is expected to contribute to the dissemination of digitized product data which serve as technical foundations for the Connected Industries policy, which aims to enable connections between all and every type of data.

1. Background

Digitized product data, once designed using CAD, etc., are utilized in various specifically optimized software suites and IT systems for respective processes throughout the product lifecycle. When data are migrated to other IT systems, the original data is converted in most cases, and such data conversion often causes minor changes to the original data, including product shapes, sizes, etc.

It is extremely important in product development to confirm and guarantee that such data conversion does not introduce defects or other faults which could jeopardize the production, or in other words, that the data maintain a high level of reliability in use.

(Source: Japan Automobile Manufacturers Association, Inc.)

This standard was developed by an international team consisting of representative engineers from foreign aircraft manufacturers and those from the digital data field, in addition to Japanese engineers with abundant knowledge in this field. Before making a proposal on the standard, Japan explained its vision for the future of the world and built consensus among major countries. Thanks to such efforts, all participating countries voted for the standard and the publication of the standard was decided within a short period of time.

2. Outline of the standard

This standard provides various functions that determine equivalence between two pieces of product model data. Users are to select appropriate functions in accordance with their models and enter thresholds for equivalence validation and required computational accuracy, allowing the IT tool equipped with this standard to make determinations. By appropriately selecting the functions provided by this standard, users can obtain detailed information concerning the results such as merely whether equivalence is validated or the location of the critical non-equivalence exists in data.

This standard covers the shape data, assembly data aggregates of individual component data, and product manufacturing information (PMI), which are utilized especially frequently in the manufacturing industry, and is designed to enable addition of data at the lowest cost depending on market needs.

3. Utilization of the standard

In developing products, engineers may often face the need to check whether two pieces of product data are equivalent within an acceptable margin of error.

Case 1: verifying whether the data that is stored for extended periods has retained its integrity
Case 2: comparing data before and after a design change to identify the discrepancies
Case 3: validating equivalence between data before and after an upgrade to the CAD system

This standard is expected to be utilized effectively in various practical settings. Together with the completion of ISO 10303-59 (standard for quality of product shape data; Japan's proposal), which has already been publicized, the issuance of ISO 10303-62 means that standards for validation of product data reliability are effectively complete.

These standards will be adopted in ISO 10303-242, common standards for product model data for automobiles and aircraft, and will further contribute to shortening development times for costly, high-precision key components, maintaining superiority of differentiated products, and further disseminating digital data into the future.

Division in Charge

International Standardization Division, Industrial Science and Technology Policy and Environment Bureau