Overview
EN ISO 16610-1:2015 - Geometrical product specifications (GPS) - Filtration - Part 1: Overview and basic concepts (ISO 16610-1:2015) defines the basic terminology and the framework for fundamental procedures used in GPS filtration. It is the introductory, general part of the ISO 16610 series and establishes the conceptual toolbox for filtering surface measurement data (profiles and areal data) used in surface metrology and product specification.
Key topics
- Terminology and definitions for GPS filtration (e.g., integral feature, surface portion, surface profile).
- Primary mathematical models - nested hierarchical models of surface portions that can be described by a finite number of parameters (examples given, not exhaustive).
- Nesting index concept - a generic parameter that indicates the relative level in the nested hierarchy of models (examples: cut-off wavelength for linear filters; disc radius or line length for morphological filters).
- Filter designations and the framework for describing filters consistently across GPS filtration standards.
- Normative references to GPS foundation documents (ISO 17450-1, ISO 17450-2) and metrology vocabulary (VIM / ISO/IEC Guide 99).
- Informative annexes with illustrative examples, a masterplan for the ISO 16610 series, advantages/disadvantages of filter types, and relationships to the GPS matrix model.
Practical applications
EN ISO 16610-1:2015 is foundational for any activity involving surface texture analysis and filtration of measurement data, including:
- Pre-processing of profilometry and areal measurement data to separate roughness, waviness and form.
- Selection and specification of appropriate filters (Gaussian, spline, morphological, robust, etc.) consistent with GPS terminology.
- Implementation of filtration logic in measurement software, CMMs, profilometers and areal instruments.
- Creation of inspection procedures, quality specifications and verification protocols where surface function depends on filtered surface characteristics.
Who uses this standard:
- Metrologists and calibration laboratories
- Quality and inspection engineers
- Product designers concerned with functional surface requirements
- Instrument manufacturers and software developers for surface analysis
- Standards writers and regulatory bodies implementing GPS standards
Related standards
Part 1 is the general introduction to the ISO 16610 series. Related parts include (selection):
Keywords: EN ISO 16610-1:2015, ISO 16610, GPS filtration, surface metrology, nesting index, cut-off wavelength, morphological filters, Gaussian filter, surface texture.