当前位置: 首页 > 协会标准 > ASTM 美国材料与试验协会 > ASTM F790-2008 航空航天塑料透明外壳用试验材料的标准规范
ASTM F790-2008 航空航天塑料透明外壳用试验材料的标准规范

ASTM F790-2008 航空航天塑料透明外壳用试验材料的标准规范

prev next

  • 商品货号:INFOEACH_80877
  • 商品品牌:美国材料与试验协会 ASTM
    商品重量:0克
  • 上架时间:2021-03-04
    商品点击数:5130
  • 用户评价: comment rank 5
  • 本店售价:请咨询客服
  • 点击此处进入论坛自助下载

资料描述

【英文标准名称】: Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
【原文标准名称】: 航空航天塑料透明外壳用试验材料的标准规范
【标准号】: ASTM F790-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: F07.08
【标准类型】: (Guide)
【标准水平】: ()
【中文主题词】:
【英文主题词】: abrasion; acrylic; adhesion; aerospace; bonding; electrical; enclosures; environmental; impact; interlayers; materials; mechanical; optical; physical; plastic; polycarbonate; properties; thermal; transparent; Acrylic plastics; Aerospace tra
【摘要】: This guide is intended for use by material suppliers, aircraft transparent enclosure fabricators, air-frame manufacturers, government agencies, and others that may become involved in the testing of transparency components. These test methods provide data on both individual materials and material combinations commonly utilized in the fabrications of aerospace transparent enclosures comprised of monolithic plastic, coated monolithic plastic or laminated constructions containing plastics. Primary properties and their long term stability are critical to the performance of aerospace transparent enclosures. Property measurement tests define as-manufactured material properties of these materials. Aging procedures provide for exposure of parts or representative sections to environments that may induce changes in material properties as determined in property measurement tests. Property measurement tests performed before and after aging exposure provide a means of estimating the potential usable life span of a transparency or to compare the durability of one material with another. When employing these test methods for comparison of materials for weathering effects the user should be aware that the many factors influencing degradation due to weathering vary from one location to another. For direct weathering comparisons, all material(s) should undergo exposure conditions and property measurements testing at the same time. The test methods listed include those considered critical to the performance of aircraft transparent enclosures. Other test methods to evaluate materials may also be performed. Additional test methods are in preparation and will be incorporated. The user is advised to employ the latest revision of any test method. The dominant component of all transparent enclosures is one, or more, rigid transparent sheet(s). The sheet(s) must permit the necessary visibility while providing structural integrity and protecting the aircraft interior from external environments as required by the specific aircraft design. In its most simple form, the rigid transparent sheet may be the only component of a transparent enclosure. When more than one rigid transparent sheet is employed, the sheets are laminated with a controlled thickness with either an air gap or with a transparent adhesive known as an interlayer. Transparent enclosure designs may use multiple rigid transparent sheets to take advantage of specific properties of different materials. In this instance, there will be functions required of one of the sheets but not the other. The test methods, practices and guides listed are a summary of the available test methods applicable to plastic transparent enclosures. They are presented in this format to simplify the search and to enable the user to determine if a method applicable to his requirements is available.1.1 This guide is intended to summarize the standard test methods available on individual and composite materials utilized in fabrication of aerospace plastic transparent enclosures. As such, it is intended to specifically include transparent thermoplastics, transparent elastomers, and reinforced plastics, whether thermoplastic or thermosetting. 1.2 This guide is intended as an aid in the search for test methods pertinent to Aerospace Plastic Transparent Enclosures. It should be understood that all methods listed may not apply to all enclosures. 1.3 The standards included refer to the properties or aspects listed in Table 1. The properties or aspects are listed in alphabetical order and the descriptions used are intended to facilitate the search. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determi......
【中国标准分类号】: V13
【国际标准分类号】: 49_045
【页数】: 3P.;A4
【正文语种】: 英语

相关资料