Date：2022-12-30 15:00:09

X-RAY non-destructive testing X-rays are produced by a cathode ray tube to generate high-energy electrons to collide with a metal target. During the impact process, due to the sudden deceleration of electrons, their lost kinetic energy will be released in the form of X-RAY, which has a very short wavelength but high electromagnetic radiation lines. For the position where the sample cannot be detected by appearance, the change of light intensity after X-RAY penetrates the substance with different densities can be recorded, and the contrast effect can be used to form an image to show the internal structure of the object to be tested, so that the problematic area inside the object to be tested can be observed without damaging the object to be tested. View >>

Date：2022-12-30 14:59:17

The internal auditor, authorized signatory, quality director, technical director and management representative of each inspection and testing institution; Relevant technical and management personnel engaged in qualification accreditation and laboratory accreditation; Enterprise laboratories in various industries and regions are engaged in testing, inspection and detection technology and management personnel. View >>

Date：2022-12-29 16:05:25

X-ray online detection is a remote detection technology using X-ray technology, which can detect the shape, size, location and material composition of objects online. It is a relatively accurate, fast and nondestructive measurement technology, which can effectively detect the characteristics of the measured object and help enterprises improve efficiency and quality. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-12-29 16:02:28

Electrical product safety detection is one of the key components of product safety detection in modern society. Electrical safety testing is not only to meet the new recognized standards, but also to protect the product design object and its use environment. The equipment used to certify and verify the electrical safety of products has also changed over time. This technology improves the performance, accuracy, reliability, operator protection and data capture of test results and key product information. The improvement of testing equipment makes safety testing simpler and more effective for manufacturers. View >>

Date：2022-12-28 16:15:30

MOS tubes are metal oxide semiconductor field effect transistors, or metal insulator semiconductor. The source and drain of MOS tube can be exchanged. They are both N-type regions formed in the P-type. In most cases, the two regions are the same, and even if the two ends are switched, the performance of the semiconductor device will not be affected. Such devices are considered symmetrical. At present, consumer electronic power adapter products rank first in market applications. In the second place are computer motherboards, NB, computer adapters, LCD monitors and other products. The third is network communication, industrial control, automotive electronics and electricity View >>

Date：2022-12-28 16:11:55

Flight inspection (referred to as flight inspection) is a form of tracking inspection, which refers to on-site inspection conducted without prior notification to the inspected department. With the increasingly strict code of conduct requirements for the inspection and detection industry, flight inspection has become an effective means of supervision. How can we better deal with such temporary and sudden inspections? Take a look at the common flight inspection points of CMA/CNAS laboratories! View >>

Date：2022-12-27 15:53:06

Based on strict control of product quality, X-RAY testing equipment is often used for product fault analysis, and its nondestructive testing features are very efficient for detecting internal defects of products. X-ray has a certain penetrability, which can accurately detect the defects in the product and find the root cause of the defects. At the same time, the product structure is processed and displayed on the screen or TV screen to obtain the X-ray image with black and white contrast and sense of hierarchy. View >>

Date：2022-12-27 15:51:28

Laboratory accreditation is a procedure for the formal recognition of the testing/calibration laboratory and its personnel's ability to perform the specified type of testing/calibration by an authoritative accreditation body. China National Accreditation Service for Conformity Assessment (CNAS for short) is a national accreditation institution approved and authorized by the Certification and Accreditation Administration of the People's Republic of China in accordance with the Certification and Accreditation Regulations of the People's Republic of China. It is responsible for the accreditation of certification institutions, laboratories, inspection institutions and other relevant institutions. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-12-20 15:00:27

In the early failure stage, defective, contaminated or critical electronic components will fail and be exposed during this period. This stage is very short. Some components will become invalid in only a few days and will be eliminated early. The normal failure period is the normal working stage of components and is also the life span of components. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-12-20 14:59:00

Contract review, on-site exploration (if necessary) and contract signing. Select the sampler (at least 2 people, who shall work with certificates). Formulate sampling plan (to be reviewed and approved). Preparation of sampling supplies. On site sampling (observe for four weeks, record the time, place and environment, and start sampling, recording, sealing, packing, loading and returning to the laboratory). Packed and returned to the laboratory. testing. Results report. View >>