设为首页|加入收藏

• 首 页
• 美军标 MIL
• 国际标准
• 协会标准
• 国内标准
• 论 坛

ASTM C 904-1998 耐化学腐蚀的非金属材料标准术语

上一篇: ASTM F 894-1998 聚乙烯(PE)大直径异形壁污水管和雨水管
下一篇: ASTM C 520-1998 粒状疏松的填充隔热材料密度的标准试验方法

Product Code:SAE J853
Title:Vehicle Identification Numbers (Cancelled Oct 2009)
Issuing Committee:Vin - Wmi Technical Committee
Scope: This SAE Standard has been established to provide direction for the design and installation of a Vehicle Identification Number assigned to a passenger car or truck. In adhering to these standards, facility of application in factory production and appearance are matters for manufacturer control.Product Code:SAE AIR5892
Title:Nonvolatile Exhaust Particle Measurement Techniques
Issuing Committee:E-31 Aircraft Exhaust Emissions Measurement Committee
Scope:This SAE Aerospace Information Report (AIR) addresses procedures applicable to quantifying the emission of nonvolatile particulate matter at the exit plane of aircraft gas turbine engines. While both volatile and nonvolatile particulate matter (PM) are present in aircraft gas turbine exhaust, the methods used to measure nonvolatile particles are farther advanced and are addressed here.Existing PM measurement regulations employ the SAE Smoke Number measurement (Reference 2.1.1), a stained filter technique used in evaluating visible emissions. The environmental and human health issues associated with submicronic PM emissions require more detailed measurement of the mass, size, and quantity of these particle emissions.Responding to regulatory agency requests, this AIR describes measurement techniques that are well developed and could be applied to the measurement of aircraft engine particulate matter. The techniques discussed here are considered relevant for measuring particle parameters identified with environmental and health concerns. The discussion that follows is based on research made while developing measurement techniques and in scientific and engineering experiments regarding PM emissions. The techniques are not yet used in routine aircraft engine certification. Future use in regulatory testing is likely to involve further refinements in methodology and application. It is planned that these refinements will be included in the subsequent publication of an Aerospace Recommended Practice.The distinction between nonvolatile and volatile particle types is a critical task in the measurement of particles in aircraft engine exhaust. Appendix A, SAE E-31 Position Paper on Particle Matter Measurements, provides additional technical bases for the scope of this AIR. The measurement methods for volatile condensed particles in turbine exhaust will be covered in a subsequent report. Observations to date show that volatile particles occur mainly at diameters less than 10 nanometers (

© 2009-2024 标准资料网 版权所有，并保留所有权利。

北京智聚科技有限公司 Tel: 010-67123753 E-mail: kefu@infoeach.com

京ICP备14017250号-1