声学

[中文适用范围]： 本文件定义了四类（A、B、C 和 D 类）管道绝缘材料的声学性能。它还定义了一种用于测量任何类型的材料系统结构的声学性能的标准化测试方法，从而允许根据这四个类别对现有和新的绝缘结构进行评级。此外，本文件还介绍了一些预期符合这些声学性能等级的典型结构类型。本文件适用于圆柱形钢管及其管道组件的隔音。它适用于直径不超过 1 米且直径小于 300 毫米时最小壁厚为 4.2 毫米的管道，直径大于 300 毫米时最小壁厚为 6.3 毫米的管道。它不适用于矩形管道和容器或机械的隔音。本文件涵盖了隔音的设计和安装方面，并提供了指导，以帮助噪声控制工程师确定特定应用所需的隔音等级和程度。它给出了施工方法的典型示例，但这些示例仅供参考，不具有指导意义。本文件重点强调了隔音与隔热的不同之处，旨在为安装人员和噪音控制工程师提供指导。隔热的详细信息不在本文件的讨论范围内。 [外文原描述]： This document defines the acoustic performance of four classes (Classes A, B, C and D) of pipe insulation. It also defines a standardized test method for measuring the acoustic performance of any type of material system construction, thereby allowing existing and new insulation constructions to be rated against the four classes. Furthermore, this document presents some typical types of construction that would be expected to meet these acoustic performance classes. This document is applicable to the acoustic insulation of cylindrical steel pipes and to their piping components. It is valid for pipes up to 1 m in diameter and a minimum wall thickness of 4,2 mm for diameters below 300 mm, and 6,3 mm for diameters from 300 mm and above. It is not applicable to the acoustic insulation of rectangular ducting and vessels or machinery. This document covers both design and installation aspects of acoustic insulation and provides guidance to assist noise control engineers in determining the required class and extent of insulation needed for a particular application. It gives typical examples of construction methods, but the examples are for information only and not meant to be prescriptive. This document emphasises the aspects of acoustic insulation that are different from those of thermal insulation, serving to guide both the installer and the noise control engineer. Details of thermal insulation are beyond the scope of this document.