最新EIA-364-28E 电子连接器振动测试方法-中英.doc
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1、精品资料EIA-364-28E 电子连接器振动测试方法-中英.CONTENTS 目录Table1 Vibration conditions .52 Values for test condition V .133 Values for test condition VI .144 Values for test condition VII .15Figure1 Mounting axis definitions.32 Vibration test curves - high frequency (displacement in mm) .73 Vibration test curves - h
2、igh frequency (displacement in inches).84 Test condition V, random vibration test curve envelope.125 Test condition VI, random vibration test curve envelope.136 Test condition VII, random vibration test curve envelope .141. Introduction简介1.1. Scope 范围The standard test procedure details a method to a
3、ssess the ability of electrical connector components to withstand specified severities of vibration.此试验标准详述了一种用于电子连接器振动试验的标准方法,用以评估电子连接器及其组件承受特定强度振动的能力。1.2. Object 主旨The object of this test is to determine the effects of vibration within the predominant or random vibration frequency ranges and magni
4、tudes that may be encountered during the life of the connector.此试验的是用来模拟产品在使用过程中可能遭受到的主要频段或随机振动频段范围内及其振动幅度的环境,以此验证对产品性能的影响情况.1.3. Definitions定义1.3.1. Axis 轴向The following mounting axis definitions shall be employed during the performance of this test. Figure 1 indicates a pictorial view of the axis
5、definitions. The referencing document shall indicate the fixturing required or the axis definitions if different than as stated in figure 1. Axis definitions for symmetrical, square and “free” connectors shall be defined in the Detail Specification.在执行振动测试时,轴向需明确定义清楚。图1标示了各轴向的定义。若实际测试所使用的轴向与图1不同,则在相
6、关参考文件中需对试验装置要求及轴向进行定义。对于具有对称性,方形及不规则的连接器的轴向的定义也要在规范细目中详加定义。1.3.1.1. X-axis X-轴Along the longitudinal length of the test sample沿着试件的纵向长度方向。1.3.1.2. Y-axis Y-轴The axis perpendicular to the longitudinal length of the sample (transverse direction).垂直于试件纵向长度的方向(横向方向)。1.3.1.3. Z-axis Z-轴The axis perpendic
7、ular to the fixture seating plane attached to the test table.垂直于固定治具的测试平台的方向1.3.2. The term gn 术语gnThis term is the SI unit for the standard acceleration due to the earths gravity, which itself varies with altitude and geographic latitude.gn是国际单位,表示标准的重力加速度,其本身随着高度和地理位置而变化。NOTE In this standard the
8、value of gn is 9.81 m/s2.备注:在这个标准中gn 取9.81 m/s22. Test resources 测试程序2.1. Equipment 设备The monitoring transducer shall be calibrated against a standard transducer having an accuracy of 2%. The vibration system consisting of the vibration machine, together with its auxiliary test equipment, shall be c
9、apable of generating either a sinusoidal or random excitation.传感器需由标准传感器(精度在2%以内)进行校准。振动系统包含有振动机及辅助测试设备,整个系统应能产生正弦或随机振动。Test equipment for random vibration shall produce random excitation that possesses a Gaussian (normal) amplitude distribution, except that the acceleration magnitudes of the peak v
10、alues may be limited to a minimum of three times the rms three-sigma (3) limits.用于随机振动的测试设备所产生的随机振动的振动幅度应符合高斯分布,但加速度的峰值可限止到最小为3 倍的均方根值(区间为3)。3. Test specimen 测试样品3.1. A vibration test sample shall be a fully wired connector consisting of one of the following, as applicable;振动试验的样品应是完全连接好连接器,且包括下列条件中
11、任一条适用的条件:3.1.1 A connector plug and its mating connector receptacle.连接器的公头及与其相对应的母头;3.1.2 A printed circuit connector receptacle and its mating connector board(s).印刷电路板及与其相对应的连接器;3.1.3 An integral, functional connector assembly.已装配好且具完整功能的组合件。3.2. Each test sample shall be prepared with wire and oth
12、er materials or processes, simulating application assembly of the sample. If normal connector mating is dependent upon forces external to the connector, then such forces and mounting arrangement shall be as closely duplicated as possible (example: printed circuit connectors). If mating is achieved w
13、ith normal locking means, then only normal locking means shall be used.每一试验样品都应准备好导线及其它材料,或作好模拟连接器的现场组装等工作。若连接器的连接方式需要依靠外力,那么这些外力与连接方式应尽可能模拟实际的状况(例如:印刷电路连接器)。若是通过的锁扣方式连接,那么也需采用相同的方式连接。3.3. Method of mounting 安装方法3.1 Test conditions I, II, III and IV (sinusoidal evaluation conditions)试验条件I,II,III和试验条
14、件IV (正弦振动测试条件)The specimen shall be attached to a fixture capable of transmitting the vibration conditions specified. The test fixture shall be designed so that resonant vibration inherent in the fixture within the frequency range specified for the test shall be minor. The magnitude of the applied v
15、ibration shall be monitored on the test fixture near the specimen mounting points. The test specimen shall be mounted rigidly to the test fixture as specified and shall simulate as closely as possible the normal mounting of the specimen. A minimum of 200 mm (approx 8 in) of wire or cable shall be un
16、supported on both ends of the connector. For specimens with attached brackets, one of the vibration-test directions shall be parallel to the mounting surface of the bracket. Vibration input shall be monitored on the mounting fixture in the proximity of the support points of the specimen.连接器试验样品应固定到能
17、传递规定振动条件的夹具上,夹具的设计应能保证它的固有共振频率在试验所规定的频率范围内达到最小。在试验夹具上接近样品的地方监控所施加的振动强度。样品安装应尽可能模拟实际使用状况。在连接器尾端至少有200毫米(约8英寸)长的导线末被固定。对于带有安装托架的样品,振动试样的一个方向应平行于托架的安装面。在靠近样品支撑点的地方监控振动输入。3.2 Test conditions V, VI and VII (random excitation conditions)试验条件V,VI和VII(随机振动测试条件)The specimen shall be mounted as specified. The
18、 orientation of the specimen or direction of application of the applied vibration motion shall be specified in one or more directions. If the order of application of the different directions is critical, it also shall be specified. Any special test fixtures or jigs required to run the test shall be
19、specified in sufficient detail to assure reproducibility of the input motion applied to the specimen. These details shall include the dimensions, the materials, temper, etc., as applicable.按规定的方法安装样品,试验样品的位置或施加振动的方向应规定朝一个或一个以上的方向。如果朝不同方向施加的次序很重要,那就应该规定不同方向的先后顺序。对于进行试验所要求的任何特殊试验夹具或机架应充分详细规定,以保证施加到样品的
20、输入量具有重复性,这些详细的规定包括尺寸、材料和温度等。4. Test procedure 测试程序Tests and measurements before, during and after vibration shall be as specified in the referencing document. 应在相关的参考文件中规定振动之前,之中或之后的各种测试项目。4.1. Test conditions I, II, III and IV测试条件、4.1.1 Electrical load and discontinuity电负载及其不连续性4.1.1.1 Unless other
21、wise specified in the referencing document, the electrical load condition shall be 100 milliamperes, maximum for all contacts.除非另有规定,施加电负载时,通过端子的电流最大不得超过100mA。4.1.1.2 Unless otherwise specified in the referencing document, no discontinuities of one microsecond or greater duration are allowed. A dete
22、ctor capable of detecting the specified discontinuity shall be used.除非另有规定,试验过程中应使用合适的仪器来监控电路的电气不连续性, 不允许出现大于1s的断路现象。4.1.2 Vibration conditions 振动条件Vibration conditions shall be in accordance with table 1, as applicable.表1 列出适用的振动条件。4.1.3 Resonance 共振A critical resonant frequency is that frequency a
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