【英文标准名称】:Powdermetallurgicalmaterialsandproducts.Methodsofsamplingandtestingmetallicpowders.Determinationofapparentdensity.Oscillatingfunnelmethod
【原文标准名称】:粉末冶金材料和制品.第2部分:金属粉末取样和试验方法.第2节:表观密度的测定.第3小节:振动漏斗法
【标准号】:BS5600SubSec.2.2.3-1984
【标准状态】:作废
【国别】:英国
【发布日期】:1984-12-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:振荡;密度测量;粉末冶金;重量测量;金属;体积;粒状材料;试验设备;尺寸
【英文主题词】:dimensions;densitymeasurement;oscillations;particulatematerials;powdermetallurgy;metals;testequipment;volume;weightmeasurement
【摘要】:
【中国标准分类号】:H71
【国际标准分类号】:
【页数】:4P;A4
【正文语种】:英语
基本信息
| 标准名称： | 炮弹、火箭弹、导弹、引信、火工品铝及铝合金零件阳极氧化膜层规范 |
| 中标分类： |
综合 >>
基础标准 >>
材料防护 |
| ICS分类： |
机械制造 >>
表面处理和涂覆
|
| 替代情况： | WJ 538-1982 |
| 发布日期： | 2007-05-22 |
| 实施日期： | 2007-11-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 7 |
适用范围
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前言
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目录
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引用标准
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所属分类： 综合 基础标准 材料防护 机械制造 表面处理和涂覆
Product Code:SAE J2846
Title:Laboratory Measurement of the Acoustical Performance of Body Cavity Filler Materials
Issuing Committee:Acoustical Materials Committee
Scope:This SAE Recommended Practice describes a laboratory test procedure for measuring the acoustical performance of a system consisting of a body cavity filler material formed into a rectangular cross-section channel. Materials for this test may include both heat reactive and chemically reactive products, with or without a nylon or other shelf to simulate a baffle in an application, or a combination of body cavity filler and aluminum foil to enhance the performance. These materials are commonly installed in transportation systems such as ground vehicles, and thus reduce the noise propagation through the rails, rockers, and pillar/posts. This document is intended to rank order the acoustical performance of materials for application on channels using general automotive steel, such that the effects of sealing of pinch welds in addition to the material could be easily evaluated. The acoustical performance is expressed in terms of insertion loss (IL) which is described below. The test procedure described here is based on the method described in SAE J1400. However, this document differs from the SAE J1400 method in that the J1400 measures sound transmission loss, and this document measures IL of body cavity materials in a cavity.