BS ISO 815-1-2008 硫化橡胶和热塑性橡胶.压缩形变的测定.室温和更高温度

上一篇: ANSI/ASTM F891-2009 多孔芯的共挤聚氯乙烯塑料管技术规范
下一篇: BS ISO 3417-2008 橡胶.用摆振式圆盘硫化计测量硫化特性

标准名称：	水平吊盖带颈平焊法兰人孔.附图
中标分类：	化工 >> 化工机械与设备 >> 化工机械与设备零部件
替代情况：	被HG/T 21523-2005代替
发布日期：	1995-12-28
实施日期：	1996-03-01
首发日期：	1900-01-01
作废日期：	2006-01-01
出版日期：	1900-01-01
页数：	8页

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Product Code:SAE J2934
Title:Laboratory Measurement of Tortuosity and Characteristic Lengths of Acoustical Materials
Issuing Committee:Acoustical Materials Committee
Scope: This SAE Recommended Practice describes a laboratory test procedure for measuring tortuosity , thermal and viscous characteristic lengths of acoustical materials for automotive and other ground transportation applications. The materials may consists of natural fibers, synthetic fibers or cellular foam materials. This method is based on measurement of acoustical quantities of the materials. Tortuosity , thermal and viscous characteristic lengths of the materials are then derived mathematically from the measured acoustical quantities.
Rationale: This SAE Recommended Practice describes a laboratory test procedure for measuring tortuosity , thermal and viscous characteristic lengths of acoustical materials for automotive and other ground transportation applications. The materials may consists of natural fibers, synthetic fibers or cellular foam materials. This method is based on measurement of acoustical quantities of the materials. Tortuosity , thermal and viscous characteristic lengths of the materials are then derived mathematically from the measured acoustical quantities.