What are the main methods and purposes of NDT?

Date：2023-02-03 18:00:00 Views：713

Non-destructive testing is a method that uses physical or chemical methods and advanced technology and equipment to inspect and test the internal and surface structure, performance and state of the test piece without damaging the test piece. It is a method to inspect and test the structure, property, state and defect type, quality, quantity, shape, position, size, distribution and change of the internal and surface of the test piece by means of physical or chemical methods and modern technology and equipment, using the change of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the internal structure abnormality or defect of the material.

Main NDT methods:

Common NDT methods include visual inspection (VT), eddy current inspection (ECT), radiographic inspection (RT), ultrasonic inspection (UT), magnetic particle inspection (MT) and liquid penetrant inspection (PT). Other NDT methods: acoustic emission test (AE), thermal image/infrared (TIR), leakage test (LT), magnetic flux leakage test (MFL), far field test and detection method (RFT), ultrasonic diffraction time difference method (TOFD), alternating current field measurement technology (ACFMT), etc.

Main purpose of NDT:

1. Ensure product quality

2. Ensure safe use

3. Improve production process and reduce production cost

The development of NDT technology has experienced three stages: NDT, NDT and damage assessment.

Non-destructive testing is the early name, that is, the detection and discovery of defects;

Non-destructive testing is the name of the current stage. It not only refers to the detection of defects, but also detects some other information of samples, such as structure, performance, status, etc.

Damage assessment is a new stage, which requires not only to find defects and detect the structure, performance and state of the sample, but also to obtain more complete and accurate information, such as the shape, size, location, orientation, content, structure and residual stress of the defect. It shall accurately evaluate the quality and performance of samples or products by combining imaging technology and automation technology, using the knowledge of material mechanics, computer data analysis and processing technology and other fields.

The above is the NDT related content sorted out by the core breaking testing team. I hope it can help you. Chuangxin Testing is a professional testing agency for electronic components. At present, it mainly provides integrated circuit testing services such as capacitance, resistance, connector, MCU, CPLD, FPGA, DSP, etc. Specializing in functional testing of electronic components, appearance testing of incoming materials of electronic components, anatomical testing of electronic components, acetone testing, X-ray scanning testing of electronic components, ROHS component analysis and testing. Welcome to call, we will serve you wholeheartedly!