This International Standard specifies two methods for the determination of the airflow resistance of porous materials for acoustical applications.
It is applicable to test specimens cut from products of porous materials.
NOTE 1 Details of publications relating to flow behav-iour under both laminar and turbulent conditions are given in annex A.
DS/EN 29 053:1993 history
1994DS/EN 29 646-5/AC:1994 Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 5: Requirements on test laboratories and clients for the conformance assessment process
1993DS/EN 29 946:1993 Manipulating industrial robots - Presentation of characteristics
1993DS/EN 29 787:1993 Manipulating industrial robots - Coordinate systems and motions
1992DS/EN 29 983:1992 Information processing systems - Designation of unrecorded flexible disk cartridges
1992DS/EN 29 646-5:1992 Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 5: Requirements on test laboratories and clients for the conformance assessment process
1992DS/EN 29 646-2:1992 Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 2: Abstract test suite specification
1992DS/EN 29 646-1:1992 Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 1: General concepts
1992DS/EN 29 539:1992 Materials for equipment used in gas welding, cutting and allied processes
1992DS/EN 29 529-2:1992 Information processing systems - Data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 15 916 ftprad, on 80 tracks on each side - Part 2: Track format
1992DS/EN 29 529-1:1992 Information processing systems - Data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 15 916 ftprad, on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics
1991DS/EN 29 592-3:1991 Information processing systems - Computer graphics - Programmer's Hierarchical Interactive Graphics System (PHIGS) - Part 3: Clear-text encoding of archive file
1991DS/EN 29 592-2:1991 Information processing systems - Computer graphics - Programmer's Hierarchical Interactive Graphics System (PHIGS) - Part 2: Archive file format
1991DS/EN 29 592-1:1991 Information processing systems - Computer graphics - Programmer's Hierarchical Interactive Graphics System (PHIGS) - Part 1: Functional description