Product Code:SAE AMS3798/7
Title:Webbing, Low Modulus Aramid, 1-23/32 (44) Wide, 8,700 (38,700) Breaking Strength, Double Plain Weave With Binder
Issuing Committee:Ams P Polymeric Materials Committee
Scope: This specification covers one width and one strength of low-modulus aramid webbing. This product has been used in construction of parachutes, but usage is not limited to such applications. 1-23/32 inches (44 mm) wide low modulus aramid webbing having 8,700 pounds force (38,700 N) breaking strength.
Rationale: This specification covers one width and one strength of low-modulus aramid webbing. This product has been used in construction of parachutes, but usage is not limited to such applications. 1-23/32 inches (44 mm) wide low modulus aramid webbing having 8,700 pounds force (38,700 N) breaking strength.【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Precisionmethodsforreverberationrooms
【原文标准名称】:声学.用声压测定噪声源的声功率级.混响室用精确法
【标准号】:ANSI/ASAS12.51Part1-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;声学测试;声学;发出的空气噪声;定义;测定;响度;机器;数学计算;测量;测量仪器;测量技术;噪声(环境的);噪声测量;混响;混响室法;混响室;声强;声级;声源;规范(验收);测试;试验;音量
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoiseemitted;Definition;Definitions;Determination;Loudnesslevel;Machines;Mathematicalcalculations;Measurement;Measuringinstruments;Measuringtechniques;Noise(environmental);Noisemeasurements;Reverberation;Reverberationroommethod;Reverberationrooms;Soundintensity;Soundlevel;Soundlevels;Soundsources;Specification(approval);Testing;Tests;Volume(sound)
【摘要】:Specifiesadirectmethodandacomparisonmethodfordeterminingthesoundpowerlevelthatwouldbeproducedbyasourceoperatinginanenvironmentatstandardmeteorologicalconditionscorrespondingtoacharacteristicimpedanceofpc=400Ns/m3(wherepisthedensityofairandcisthespeedofsound).Itspecifiestestroomrequirements,sourcelocationandgeneralrulesforoperatingconditions,instrumentationandtechniquesforobtaininganestimateofmean-squaresoundpressurelevelsfromwhichthesoundpowerlevelsofthesourceinoctaveorone-third-octavebandsarecalculatedwithagrade1accuracy.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:
【正文语种】:英语