MHT3002.4-1997-航空器无损检测超声检验.pdf

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1、MH中华人民共和国民用航空行业标准MH/T3002.4一1997航空器无损检测超声检验NondestructivetestinginaircraftUltrasonictesting1997-12-03发布1998一05一01实施中国民用航空总局发布MH/T30024一1997目次前言1范围··············································，.···············⋯⋯，···”···············⋯⋯，，·······“··⋯⋯12引用标准·················

2、··········“····”···················”······················”·····”·⋯”····⋯⋯，二，·⋯13定义······································”································································““·⋯⋯14一般要求·········································································

3、·····”····”·········⋯⋯25工艺程序和要求···········“···············“···“···················“⋯⋯”························”⋯⋯56质量等级与评定·····································································，.···········”·······”·⋯⋯67质量控制···，.····························，··············

4、···················································“·⋯⋯7附录A(标准的附录)超声仪与探头配用时使用性能测试方法···································⋯⋯9附录B(标准的附录)衰减器的校验····，.·······················⋯⋯”···············..·..·..·..·..·.⋯⋯13附录C(标准的附录)纵波检验用的标准试块··········..····.················.············

5、..·..·⋯⋯15MH/T3002.4一1997前言本标准等效采用美国军标MIL-STD-2154。同时也参考了GJB593.1-88部分内容。本标准编写格式是按照GB/Tl.1-1993(标准化工作导则第1单元:标准的起草与表述规则第1部分:标准编写的基本规定》，本标准保留了MIL-STD-2154基本内容。在编写中，结合民航实际，力求使本标准既具有先进性和科学性，又有可行性。本标准的附录A、附录B和附录C是标准的附录。本标准由中国民用航空总局航空器适航中心提出。本标准由中国民用航空总局航空器适航司归口管理。本标准主要起草单位:北

6、京飞机维修工程有限公司、广州飞机维修工程有限公司。本标准主要起草人:潘建华、聂有传、晏荣明、王彦田。中华人民共和国民用航空行业标准航空器无损检测超声检验MH/T3002.4一1997NondestructivetestinginaircraftUltrasonictesting范围本标准规定了民用航空器所用材料及其零、部件超声检验方法的基本要求。本标准适用于民用航空器所用材料及其零、部件超声检验。2引用标准下列标准所包含的条文，通过在本标准中引用而构成为本标准的一部分。本标准出版时，所示版本均为有效。所有标准都会被修订，使用本标准的各

7、方应探讨使用下列标准最新版本的可能性。GB/T12604.1-90无损检测术语超声检测MH/T3001-95民用航空无损检测人员技术资格鉴定规则ZBY230-84A型脉冲反射式超声探伤仪通用技术条件ZBY231-84超声探伤用探头性能测试方法ZBY232-84韶声掇伤用1号标准试块技术条件3定义本标准采用下列定义。3.1A扫描显示A-scanpresentation在显示屏上显示信息的一种方法。利用水平基线指示距离或时间，用从基线开始的垂直偏转指示脉冲幅度。3.2直射声束检验straightbeamexamination用声束垂直于检

8、验面而传播的超声波所进行的检验。3.3斜射声束检验anglebeamexamination用声束传播方向与检验面法线成一定角度的超声波所进行的检验。3.4分贝decibel(dB)两个波幅比的对数表示:dB=20lg(A