Vibration test
  • Vibration test

Vibration test


Vibration test is a kind of environmental reliability test, mainly by simulating the various vibration environments encountered by the product in the environment of transportation, installation and use, to determine whether the product can withstand various vibration environments.

Introduction to Vibration Test

Scope of Services

This product can provide vibration for household appliances, auto parts, wiring harness connectors, ship airborne equipment, information technology equipment, medical equipment, power supply equipment, rail transit and other products.

Dynamic test.

Test standard

GJB 150.16a、GJB360A-96方法214、 GJB 4.7、GJB 367.2、GJB 548A、MIL-STD-810F 、RTCA DO-160 E/F/G、GB/T 2423.10、GB/T 2423.56. GB/T 28046.3、GB/T 4857.7. GB/T 4857.10、GB/T 4857.23、IEC 60068-2-6、IEC 60068-2-64、ASTM D999、JIS D1601. IEC 61373等。

Test Items

Sinusoidal vibration, random vibration, mixed vibration, temperature and humidity vibration three comprehensive test.

Electronic products will inevitably encounter vibration and collision during actual transportation and use. Therefore, vibration testing of products will be considered in product development and acceptance work, and vibration test analysis provides important test methods and means to verify product reliability and optimize product structure design in a simulated environment.

What is vibration testing?

Vibration test is to simulate a series of vibration phenomena, test the product in the life cycle, can withstand the vibration environment test during transportation or use, but also to determine the product design and function requirements. The vibration test is to confirm the reliability of the product and screen out the defective products before leaving the factory in advance, and analyze the failure of the defective products to improve the processing technology and improve the overall quality of the product.

Vibration Test Purpose

Electrical and electronic products do vibration testing needs more, because most of the electronic products are precision products, such as mobile phones, tablets, etc., the internal structure and devices are more precise, the vibration environment has a greater impact on it, the need to analyze and evaluate the reliability of the product in the vibration environment, to ensure product life.

 

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What is vibration testing?

Vibration test is to simulate a series of vibration phenomena, test the product in the life cycle, can withstand the vibration environment test during transportation or use, but also to determine the product design and function requirements. The vibration test is to confirm the reliability of the product and screen out the defective products before leaving the factory in advance, and analyze the failure of the defective products to improve the processing technology and improve the overall quality of the product.

Vibration Test Purpose

Electrical and electronic products do vibration testing needs more, because most of the electronic products are precision products, such as mobile phones, tablets, etc., the internal structure and devices are more precise, the vibration environment has a greater impact on it, the need to analyze and evaluate the reliability of the product in the vibration environment, to ensure product life.

Vibration Test Classification

Reliability vibration test is generally divided into 2 types, sinusoidal vibration test and random vibration test.

Sinusoidal vibration is a test method often used in laboratories. It mainly simulates the vibration generated by rotation, pulsation and oscillation (occurring on ships, airplanes, vehicles and space vehicles), as well as the resonance frequency analysis of product structure and the verification of resonance point residence. Sinusoidal vibration test generally tests the structural strength of the product and the resonance frequency of the search structure; random vibration is to simulate the actual use of the product or transport encountered at any time instantaneous value can not be determined, the waveform over time irregular vibration, random vibration test can more truly reflect the vibration resistance of the product. Mixed vibration is the superposition of general sinusoidal vibration and random vibration, and the vibration situation is more complicated.

Vibration test conditions

Sine vibration is generally expressed as a sine (cosine) time function, and the test conditions include: test frequency, test magnitude (acceleration amplitude), scanning speed and scanning time and test direction, which is the general condition for carrying out vibration test.

The motion law of random vibration cannot be correctly expressed as a function of time, but can only be expressed by statistical methods and described in the frequency domain. The test conditions generally include: test frequency range (between the highest and lowest frequencies), power spectral density (energy distribution on unit frequency), total root mean square acceleration (square mean root value of power spectral density), test time and direction.

The results of the vibration test will be affected by the main

Vibration test

The results of the vibration test will be affected by many factors, including

1. The fixture mainly has the structure of the fixture and the performance of the fixture, which affects the first-order resonance frequency of the fixture and the accuracy and uniformity of the signal input;

2. The arrangement of sensors, the installation of samples, the selection of control points and monitoring points will affect the accuracy of data collection;

3. The natural frequency of the vibrating table surface differs greatly from the natural frequency of the sample.

Test Standard

1. Sinusoidal vibration standards mainly include: GB/T 2423.10-2008 "Environmental Tests for Electrical and Electronic Products Part 2: Test Methods Test Fc: Vibration (Sinusoidal)"

IEC60068-2-6-2007 Basic environmental testing procedures-Part 2: Tests-Section 6: Test Fc: Vibration (sine wave)

ISO8318:2000 "Packaging. Full-filled transport packages and unit goods. Sinusoidal vibration test with variable frequency"

GB/T 4857.10-2005 "packaging transport package basic test part 10: sine frequency vibration test method"

2. Random vibration standards mainly include: GB/T 2423.56 -2018 "Environmental Testing Part 2: Test Methods Test Fh: Broadband Random Vibration and Guidelines"

IEC 60068-2-64 Environmental testing-Part 2-64 Test methods-Tests fh Vibration, broadband random sampling

GB/T 4857.23-2003 "packaging transport packages random vibration test method"

3. Other main standards include: GJB 150.16A-2009 "Military Equipment Laboratory Environmental Test Methods Part 16: Vibration Test"

GB 2423.58-2008 "Environmental testing for electric and electronic products-Part 2-80: Test methods-Test Fi vibration mixed mode"

GJB 360B-2009 Test Methods for Electronic and Electrical Components

GJB 548B-2005 Test Methods and Procedures for Microelectronic Devices

Tianhai Testing Laboratory


Tianhai testing is set up and operated in accordance with the laboratory accreditation system specification ISO 17025. The testing instruments are made up of Germany's Rohde & Schwarz, Switzerland's EMTEST, YYOKOGAWA, Agilent, Tektronix and other world's top instrument manufacturers. The equipment is advanced and sophisticated, the site environment control is reliable, traceability is strong, the technical team is senior and efficient, and close cooperation with international authoritative organizations is maintained.

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ENTERPRISE ADVANTAGE
Inspection Guarantee

Inspection Guarantee

China National Accreditation Committee for Conformity Assessment Laboratory Accreditation (CNAS), Inspection and Testing Agency Qualification Certificate (CMA), American Laboratory Accreditation Association (A2LA); Government-approved third-party testing service agencies, in strict accordance with national standards for testing, issued a report with legal effect.

Quickly get the certificate.

Quickly get the certificate.

55 engineers with more than 10 years of experience in EMC design and rectification, quickly out of the design; The introduction of German RS,SCHWARZBECK and Swiss TESEQ imported precision instrument testing, 24-hour operation, short test cycle, half an hour out of the program, 3 days to get the report.

Testing Laboratory

Testing Laboratory

Has EMC electromagnetic compatibility, safety laboratory, 966 anechoic chamber, automotive electronics laboratory, medical electronics testing laboratory, 5G RF CCC laboratory, RF laboratory, private anechoic chamber laboratory, providing a wide range of testing; The laboratory has won CMA, CNAS, A2LA and other qualifications;

Enterprise strength

Enterprise strength

15 years of industry experience, deep-rooted in the field of electromagnetic compatibility, efficient solution to product electromagnetic compatibility and other issues; National high-tech enterprise, with CMA and CNAS certificates, has been recognized by UL, TUV, Intertek, TIMCO, FCC, EMCC, NEMKO, SGS, etc. in the United States, serving the world.

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