Acoustics — Measurement of sound absorption properties of road surfaces in situ — Part 2: Spot metho...
ISO 13472-2:2010 specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for the one-third-octave-band frequencies ranging from 250 Hz to 1 600 Hz under normal incidence conditions. For special purposes, the frequency range can be changed by modifying the dimensions of the system.
The test method is intended for: a) determination of the sound absorption…
Biological evaluation of medical devices — Part 1: Requirements and general principles for the evalu...
This document specifies:
— the general principles governing the biological evaluation of medical devices within a risk management process;
— the general categorization of medical devices based on the nature and duration of their contact with the body;
— the evaluation of existing relevant data from all sources;
— the identification of gaps in the available data…
Air cargo unit load devices — Performance requirements and test parameters
This document specifies the minimum requirements for airworthiness approval of air cargo pallets, nets and containers, generally designated as air cargo unit load devices (ULD).
This document is intended to provide a uniform technical reference for air cargo unit load devices approval. As a prerequisite, it is presupposed that the applicable general civil aviation requirements and the aircraft…
