标准名称：	贵金属合金化学分析方法 金合金中钆和铍量的测定 电感耦合等离子体原子发射光谱法
英文名称：	Test method of precious metal alloys - Determination of gadolinium and beryllium contents for gold alloys - Inductively coupled plasma atomic emission spectrometry
中标分类：	冶金 >> 有色金属及其合金产品 >> 贵金属及其合金
ICS分类：	冶金 >> 有色金属 >> 其他有色金属及其合金
替代情况：	替代GB/T 15072.11-1994
发布部门：	中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会
发布日期：	2008-03-31
实施日期：	2008-09-01
首发日期：	1994-05-11
作废日期：
主管部门：	中国有色金属工业协会
提出单位：	中国有色金属工业协会
归口单位：	全国有色金属标准化技术委员会
起草单位：	贵研铂业股份有限公司
起草人：	马媛、方卫、李楷中、王应进、罗一江、徐光
出版社：	中国标准出版社
出版日期：	2008-06-01
页数：	8页
计划单号：	20065694-T-610
书号：	155066·1-31536

本标准规定了金合金中钆和铍量的测定。 本部分适用于ＡｕＡｇＣｕＭｎＧｄ、ＡｕＡｇＣｕＧｄ、ＡｕＮｉＧｄ和ＡｕＢｅ合金中钆和铍量的测定。测定范围（质量分数）：０．１％～２％。 本部分代替ＧＢ／Ｔ１５０７２．１１—１９９４《贵金属及其合金化学分析方法　金合金中钆量的测定》。
本部分与ＧＢ／Ｔ１５０７２．１１—１９９４相比，主要有如下变动：
———名称由《贵金属及其合金化学分析方法　金合金中钆量的测定》变更为《贵金属合金化学分析方法　金合金中钆和铍量的测定　电感耦合等离子体原子发射光谱法》；
———采用电感耦合等离子体原子发射光谱法代替原标准使用的分光光度法；
———将方法的适用范围由原标准的ＡｕＡｇＣｕＧｄ３５-５-０．４、ＡｕＡｇＣｕＭｎＧｄ３３．５-３-２．５-０．４合金扩展到ＡｕＡｇＣｕＭｎＧｄ、ＡｕＡｇＣｕＧｄ、ＡｕＮｉＧｄ 和ＡｕＢｅ系列合金，其中ＡｕＮｉＧｄ 和ＡｕＢｅ为新增系列；
———钆的测定范围（质量分数）由０．３％～０．６％调整为０．１％～２％；
———增加了铍量的同时测定，测定范围（质量分数）０．１％～２％；
———采用重复性和相对允许差替代原标准使用的允许差。

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下列文件中的条款通过本部分的引用而成为本部分的条款。凡是注日期的引用文件，其随后所有的修改单（不包括勘误的内容）或修订版均不适用于本部分，然而，鼓励根据本部分达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本部分。
YS/T371 贵金属合金化学分析方法总则及一般规定

Product Code:SAE AIR1672
Title:Practical Methods to Obtain Free-Field Sound Pressure Levels From Acoustical Measurements Over Ground Surfaces
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope: Acquisition of free-field data is of practical significance in the field of aeronautical acoustics. The need for free-field data includes (but is not restricted to) the following: comparison of acoustical data obtained from the same engine under various measurement conditions; comparison of the results obtained from models with those from an engine on a test stand; comparison of noise measurements made on the same engine under static and in-flight conditions; design of test facilities; standardization of techniques for 'in situ' acoustical measurements; spectral decomposition to isolate the contribution of different sources to the total noise; and prediction of aircraft noise on the basis of methods which, generally, provide free-field data. There is an increasing tendency to test full-scale engine components and scale models in anechoic test facilities that provide free-field conditions. This AIR complements this work by identifying those methods in current use which provide free-field acoustic data for measurements on engines under static conditions in the presence of a ground surface. Separate Appendices to this AIR describe different methods for noise measurement in the field that conform with the state-of-the-art to a certain extent. That is, each method has generally been systematically used by at least oe free-field conditions. This AIR complements this work by identifying those methods in current use which provide free-field acoustic data for measurements on engines under static conditions in the presence of a ground surface. Separate Appendices to this AIR describe different methods for noise measurement in the field that conform with the state-of-the-art to a certain extent. That is, each method has generally been systematically used by at least one organization and has been substantiated by data obtained from at least one test site.ne organization and has been substantiated by data obtained from at least one test site.