DIN EN 50267-2-2-1999 电缆通用着火试验方法.检测电缆燃烧时所产生的气体.第2-2部分:试验方法.通过测定Ph值和传导率确定电缆燃烧产生的气体的酸度

作者:标准资料网时间:2024-05-05 02:07:09 浏览:8791 来源:标准资料网

【英文标准名称】:Commontestmethodsforcablesunderfireconditions-Testsongasesevolvedduringcombustionofmaterialfromcables-Part2-2:Procedures;determinationofdegreeofacidityofgasesformaterialsbymeasuringpHandconductivity;GermanversionEN5
【原文标准名称】:电缆通用着火试验方法.检测电缆燃烧时所产生的气体.第2-2部分:试验方法.通过测定Ph值和传导率确定电缆燃烧产生的气体的酸度
【标准号】:DINEN50267-2-2-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-04
【实施或试行日期】:1999-04-01
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:绝缘线;测量;塑料;材料;定义;电缆;pH值;电线;分解产物;试验设备;酸度;燃烧试验;燃烧;气体分析;酸;电导性;燃烧特性;试验
【英文主题词】:Acidity;Acids;Burningbehaviours;Cables;Combustion;Combustiongas;Conductivity;Decompositionproducts;Definition;Definitions;Electricalcords;Firegas;Firetests;Gasanalysis;Insulatedcords;Materials
【摘要】:
【中国标准分类号】:K13;C80
【国际标准分类号】:13_220_40;29_060_20
【页数】:8P;A4
【正文语种】:德语

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上一篇: DIN EN 1799-1999 混凝土支承结构防护和维修用产品和系统.检验方法.混凝土表面用胶粘剂合格检验
下一篇: DIN EN 513-1999 窗门生产用无增塑聚氯乙烯(PVC-U)型材.人工风蚀测定耐气候性和耐风化性

【英文标准名称】:StandardSpecificationforCompostablePlastics
【原文标准名称】:可合成塑料的标准规范
【标准号】:ASTMD6400-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:混合物;塑料;生物降解能力;标记;规范;堆肥处理(废弃物);生物降解的;合成塑料;可降解的
【英文主题词】:biodegradability;biodegradable;compostableplastic;degradableplastics;composting;specification;plastics;composting(waste);labeling
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:3P;A4
【正文语种】:英语

Product Code:SAE AIR1989
Title:Helicopter External Noise Estimation
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope:This method estimates noise for both single and tandem main rotor helicopters except for approach where it applies to single rotor designs only. It does not apply to coaxial rotor designs. Due to lack of available data, application of the method has not been evaluated for application to tiltrotor, or other VTOL configurations, when operating in the helicopter mode. Since there are substantial differences between helicopter rotors included in the data base, and tiltrotor rotors, aplication to VTOL configurations other than helicopters is not advised. Application is limited to helicopters powered by turboshaft engines and does not apply to helicopters powered by reciprocating engine, tip jets or other types of power plants. It provides noise information using basic operating and geometric information available in the open literature. To keep the method simple, it generates A-weighted sound levels, and Sound Exposure Levels precluding the necessity for spectral details. The metod prescribes estimates for typical helicopter operations; certain maneuvers may produce noise levels different from those estimated. Estimates are given for the maximum sound levels at 1.2 m (4 ft) height above the ground. For aircraft in forward flight, the estimate is given for an aircraft at an altitude of 152 m (500 ft) on a path directly over the observer. For an aircraft in hover the estimate is given for an aircraft hovering 3.3 m (10 ft) above ground level at a distance of 152 m (500 ft) to the side of the observer. No estimate is provided for Sound Exposure Level in hover since the time duration is indeterminate.