What is sinusoidal vibration test? Relevant standards for sinusoidal vibration detection

Date：2021-07-27 16:12:00 Views：2815

Sinusoidal vibration test is a mechanical environment test method of mechanical movement, which simulates the sinusoidal vibration and its influence that products can withstand in the process of transportation, storage and use, so as to verify the adaptability and reliability of products. In aviation, aerospace, vehicle, ship, automobile, electrical and electronic industries, this is a common and basic method, which can be implemented in general vibration laboratory. GB/T2423. 10-2008 / iec60068-2-6:1995 environmental testing of electrical and electronic products Part 2: Test methods, test FC and guidelines: vibration (sinusoidal) this part gives a standard test method and process to determine the ability of components, equipment and other products to withstand sinusoidal vibration with specified severity.

Purpose of test:Determine the mechanical weakness and characteristic reduction of the sample. These data are combined with relevant specifications to determine whether the sample can be accepted. In some cases, this test method can be used to demonstrate the mechanical structure integrity and dynamic characteristics of the sample. The level of components can also be divided according to the ability to withstand different severe registration of this test.

Sinusoidal vibration test is divided into: sinusoidal sweep frequency test (sweep frequency durability and constant frequency durability), dangerous frequency measurement (resonance search).

The test conditions of sinusoidal vibration test are determined by frequency range, vibration amplitude and duration of durability test.

Physical quantity of vibration: frequency; Acceleration g or M / S2; Amplitude {single amplitude (0-P), full amplitude (P-P)}; Test direction; Test time; Sweep rate - Oct / min, Dec / min (logarithm), Hz / S (linear); Number of sweep cycles.

Test conditions and selection:For sinusoidal vibration, both military standards and civil (commercial) standards are widely used at home and abroad. The difference is that the purpose and object of application are different. In the U.S. military standard and national military standard of microelectronic device test methods and procedures, sinusoidal vibration is used to assess the strength, fatigue and noise of devices. In the U.S. military standard and national military standard of electronic and electrical component test methods, except for aerospace products, sinusoidal vibration is used to assess the environmental adaptability and structural integrity, Sinusoidal vibration shall be used for vibration response inspection and environmental adaptability and structural integrity assessment of ship equipment in American Standard (810) and national military standard (150) of military equipment environmental test method. Sinusoidal vibration shall also be used for sound inspection and resonance frequency, mode and vibration mode analysis in American Standard (1540) and national military standard (1027) required by satellite environmental test. Sinusoidal vibration is more widely used in IEC and national standards.

Sinusoidal vibration detection standard (CNAs approved):

Environmental testing of electric and electronic products Part 2: Test methods Test FC: vibration (sinusoidal) GB / T 2423.10-2008

Environmental tests for electric and electronic products Part 2: Test methods Test FC: vibration (sinusoidal) IEC 60068-2-6:2007

Frequency range of durability test: 10hz-55hz, 10-150hz, 10-500hz, 55-500hz, etc.

Duration of durability test: generally, 1min, 2min, 5min, 10min, 20min, 50min and 100min in each direction

The constant frequency durability test is conducted on the frequency of the searched resonance point. The general time is 10min, 30min, 90min, etc.

The general inspection standards for vibration test are as follows:

Environmental testing of electric and electronic products - Part 2: Test methods, test FC and guidelines: vibration (sinusoidal) GB / T 2423.10-2008 / IEC 60068-2-6:1995

Environmental testing of electric and electronic products Part 2: Test methods Test Fh: broadband random vibration (digital control) and guidelines GB / T 2423.56-2006 / IEC 60068-2-64:1993

Environmental testing of electric and electronic products Part 2: Test methods Test fi: vibration mixed mode GB / T 2423.58-2008 / IEC 60068-2-80:2005

Packaging - Basic tests for transport packages - Part 2: temperature and humidity conditioning treatment (GB / T 4857.2-2005 / ISO 2233:2000)

Basic technical conditions for automotive electrical equipment QC / T 413-2002

General specification for military computer GJB 322a-1998

General specification for military communication equipment GJB 367a － 2001

General specification for military electronic test equipment gjb3947a-2009

Rail transit rolling stock electronic devices GB / T 25119-2010 / IEC 60571:2006

General specification for electronic measuring instruments GB / T 6587-2012

Test methods and procedures for microelectronic devices GJB 548b-2005

Test methods for electronic and electrical components GJB 360b-2009

Military equipment laboratory environmental test methods Part 16: vibration test GJB 150.16a-2009

Environmental stress screening method for electronic products GJB 1032-1990

Environmental test and vibration test of ship electronic equipment GJB 4.7-1983

Vibration test method for railway ground signal products TB / T 2846-1997

Packaging - Basic tests for transport packages - Part 23: random vibration test method (GB / T 4857.23-2012)

Impact and vibration test of rail transit rolling stock equipment GB / t21563-2008 / IE 61373:1999