JIS D VIBRATION TESTING METHODS FOR AUTOMOBILE PARTS. JIS D 95th Edition, October 1, Complete Document. VIBRATION. Find the most up-to-date version of JIS D at Engineering Page 1. D Page 2. Copyright by the Japanese Industrial Standards. Wed Aug 07 Page 3. Copyright by the Japanese Industrial Standards.
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JIS d vibration t Scope This JapaneseIndustrial Standard specifies the vibration testing methods for automobileparts hereafterreferred to as “parts “.
Classificationof tests The tests shall be classifiedas follows: This test is desiqnedto determrne r the resonance frequency of each part.
Random Vibration Test System For Automotive Parts With JIS D Standards
Sweep vibration endurancetest This test is designedto determine the durability of each part against vibration, the frequency of which is increased and decreased continuouslyat a constant rate. Classificationof vibrational conditions The vibrational conditions for the vrbratron tunction test and lhe vibration endurancetest shall be classifiedas follows: Those mainly for passenger parts car Those mainly for bus parts Type 3: Those mainly for motortruck parts Type 4: Those mainly for motorcycle parts 2 The vibrational conditions for the parts shall be classified as follows by position of installation: Those for the parts to be installed on the body or on the spnngs of the suspensionsystem, which are subject to a relatively low degreeof vibration.
Those for the parts to be installed on the body or on the springs of the suspensionsystem, which are subject to a reiatively high degree of vibration. Those for the parts to be installed on the engine structure, which are subject to a relatively loy degree.
The examples of the products, to which the classification of vibrational conditions has been applied, are given in Informative reference Tabie 1. Test conditions out in the order of the resotest, and vibration endurance the resonance frequency detecsimultaneously, or the resotest and sweep vibration endur- 1. I Order ijs tests The tests shall be carried.
kg Sine Force Vibration Testing Machine JIS D High Stability
However, tion test and r-ibration function test may be made nance frequency detection test, vibration function ance test may also be made so. The tests shall be made und.
However, the reJative harmonic content t of the simple harmonic motion shall, as a rule, be 25 vo or iess in terms of vibration acceleration. Note 1 Calculate the relative harmonic content of the simple harmonic motion as follows: However, the measurement may be taken on the vibration base. These values, therefore, are given here for informative reference only.
However, when deemed necessary, the vibration acceleraf,ion may be agreed upon between the parties concerned with delivery.
Vibration acceleration stage division Note s The test of 5.
YibraJion parts shall be carrled out in accordance with the type of automobile and the position of their actual service and with the 14 stages of testing as grven in Table 2- Th. Furthermore, the Table 2 shall apply to the classification of vibration conditions, as a rule.
However, when deemed necessary,the vibration direction and the testing time may be determined by the agreement between the parties concerned with delivery.
Then the tests as specified in Table 4 shall be carried out. Note 6 Where there are two or more resonance frequencies, the maior resonancefrequency shall be used. For instance, where the part scheduled to be tested vibration endurance test on stage 20 at the frequency of 33 Hz has resonance at the frequency of 50 IJz, read in Attached Fig.
300kg Sine Force Vibration Testing Machine JIS D1601-1995 High Stability
Before the vibration endurance test of Table 4 takes place, an jix test at resonance frequency shall be “a. Amplitude in the case of 67 Hz in frequencv E a I ol i.
Amplitude in the case of Hz in frequency s ‘ I: Test FC and guidance: