MIL-HDBK-786, MILITARY STANDARDIZATION HANDBOOK: FIELD ASSURANCE OF ACOUSTIC EMISSION SYSTEM OPERATION USING SIMULATED ACOUSTIC EMISSION EVENTS (01 OCT 1987)., This handbook provides a procedure for assuring the proper operation of an acoustic emission system installed on a field test article. This handbook allows the user: 1. to insure that no degradation of performance has occurred from the laboratory sensor/system calibration upon arrival at the test site: 2. to check for proper sensor installation and coupling to the test article before the test; 3. to provide a method for adjusting all system channels to similar sensitivity levels prior to testing; and 4. to detect any performance changes during the test due to electronic malfunctions or sensor coupling problems.【英文标准名称】:Specificationfor90°countersunkheadsteelbolts(UNFthreads)foraircraft
【原文标准名称】:飞行器用90°埋头钢螺栓(UNF螺纹)规范
【标准号】:BSA119-1954
【标准状态】:作废
【国别】:英国
【发布日期】:1954-03-09
【实施或试行日期】:1954-03-09
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:外螺纹紧固件;材料的机械性能;紧固件;尺寸;弯曲试验;螺纹零件;作标记;螺栓;埋头紧固件;螺纹紧固件;飞行器部件;航空运输工程;钢
【英文主题词】:
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_030_20
【页数】:16P;A4
【正文语种】:英语