Date：2021-07-27 18:21:00

Random vibration refers to a kind of vibration with chaotic vibration waveform, whose instantaneous value can not be determined in advance at any given time in the future, and its waveform change with time can not show a certain law, so it is impossible to explain its law with deterministic function. The single test results of random vibration have uncertainty, unpredictability and non repeatability, but the multiple test results under the same conditions have internal statistical laws. The motion law must be quantitatively described by probability and statistics. Random vibration is also composed of sinusoidal vibration, but the frequency of these sinusoidal vibration is not discrete, but continuously distributed in a certain range. The amplitude and displacement of each sinusoidal vibration are unpredictable and will change with time. Instead, the average value, mean square value, probability density function and work of random vibration signal at a certain time should be used View >>

Date：2021-07-27 16:52:00

Salt spray corrosion is a common and destructive atmospheric corrosion. Where can we do salt spray corrosion test? When it comes to salt spray testing, many customers have made it difficult to choose a third-party testing organization. In fact, it is very convenient to directly find the Chuangxin testing center. Our company has dozens of professional engineers and industry elite teams, and has three standardized laboratories with an area of more than 1000 square meters, which can undertake the testing and verification of electronic components and the identification of IC authenticity, Product design, material selection, failure analysis, function inspection, factory incoming material inspection, tape braiding and other test items. View >>

Date：2021-07-27 16:45:00

Salt spray test is an environmental test that mainly uses the artificial simulated salt spray environmental conditions created by salt spray test equipment to evaluate the corrosion resistance of products or metal materials. GB / t2423 product salt spray test center -- national salt spray test center salt spray test GB / t2423 17-2008 / iec60068-2-11:1981 environmental test for electric and electronic products Part 2: Test Method: Test Ka: Salt Spray View >>

Date：2021-07-27 16:12:00

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. View >>

Date：2021-07-27 16:07:00

The vibration test is mainly environmental simulation, and the test parameters are frequency range, vibration amplitude and test duration. The impact of vibration on products includes: structural damage, such as structural deformation, product crack or fracture; Product function failure or poor performance, such as poor contact, relay misoperation, etc., are not permanent damage, because once the vibration is reduced or stopped, the work can return to normal; Technological damage, such as loose screws or connectors and desoldering. From the development trend of vibration test technology, multi-point control technology and multi machine combined excitation technology will be adopted. View >>

Date：2021-07-27 15:41:00

Damp heat test refers to the test to evaluate the antirust performance of antirust grease on metal under the condition of high temperature and high humidity. GB / T 2423.3-2006 / iec60068-2-78:2001 environmental testing of electrical and electronic products Part 2: Test methods Test cab: constant damp heat test this test standard is mainly applicable to determine the adaptability of electrical and electronic products, components or equipment during use, storage and transportation under high humidity conditions. View >>

Date：2021-07-27 15:35:00

Solderability test, English is "solderability". It refers to the qualitative and quantitative evaluation of the weldability of components, PCB boards, pads, solders and fluxes through the principle of wetting balance. It is of great help to the level 1 (IC packaging) and level 2 (electronic components assembled to printed circuit board) processes of modern electronic industry, which need high-quality interconnection technology and high-quality and zero defect welding process. View >>

Date：2021-07-27 09:38:00

Recently, the innovation test received a batch of fault relays. According to the customer's description, some of these relays did not work during workshop commissioning, and the defect rate was 10%. The appearance of the fault relay is shown in the figure below. It belongs to Panasonic brand and the model is jw1fsn-dc12v ajw4211. It is a common and widely circulated electromagnetic relay product in the market. How to troubleshoot and deal with the failure of electromagnetic relay? Recently, the innovation test received a batch of fault relays. According to the customer's description, some of these relays did not work during workshop commissioning, and the defect rate was 10%. The appearance of the fault relay is shown in the figure below. It belongs to Panasonic brand and the model is jw1fsn-dc12v ajw4211. It is a common and widely circulated electromagnetic relay product in the market. View >>

Date：2021-07-26 17:06:21

Generally speaking, the test conducted to evaluate and analyze the reliability of electronic products is called reliability test. Through reliability test, the reliability characteristic quantity of electronic products when working or storing under various environmental conditions can be determined, so as to provide useful data for use, production and design; It can also expose the problems existing in the design, raw materials and process flow of the product. View >>

Date：2021-07-26 16:10:00

1. Low temperature test environmental test for electrical and electronic products Part 2: Test methods test a: low temperature GB / t2423 1-2008, iec60068-2-1:2007 2. High temperature test environmental test of electrical and electronic products Part 2: Test methods test B: high temperature GB / t2423 2-2008 ，IEC60068-2-2:2007 View >>