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1、INTERNATIONAL STANDARD ISO 5347-14 First edition 1993-12-15 Methods for the calibration of Vibration and shock pick-ups - Part 14: Resonance frequency testing of undamped accelerometers on a steel block Methodes pour I - uncertainty for frequency: f 5 % of reading. 3 Method 3.1 Test procedure Mount
2、the accelerometer and its fixture on the steel block in accordance with the manufacturers in- structions. Suspend the accelerometer by its cable and Strike the steel block with a hammer. Measure the lowest resonance frequency in the measuring and the transverse directions. lt should be noted that it
3、 tan be very difficult to distinguish be- tween axial and transverse resonances. The nature of the hammer surface and its dimensions may alter the results. More reliable results are ob- tainable by using a type of hammer instrumented by an accelerometer and a memory FFT analyser, and thus obtaining
4、the results as a transfer function. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 21:09:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5347-
5、14:1993(EI 3.2 Expression of results The results shall be reported as mounted resonance frequency, in kilohertz, on a 180 g steel block. For frequencies above 50 kHz, the manufacturer shall specify the size, mass, material and first resonance frequency of the block. Copyright International Organizat
6、ion for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 21:09:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 5347-14:1993(E) UDC 534.1:681.327.7:53.089.6 Descriptors: Vibration, mechani
7、cal shock, transducers, Sensors, tests, calibration. Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 21:09:50 MDTNo reproduction or networking permitted without license from IHS -,-,-