Typical application cases III: testing for weapons and equipment in service

1. Overviews
With the rapid development of science and technology, high-tech weaponry research and production increasingly relies on testing techniques. In high-tech weapons and equipment research and production process, we need a large number of detection techniques to evaluate the quality of product design and manufacture, so testing technology has become an important means to assure military product quality. 
Nondestructive testing technology is an important part of detection technology, its characteristic is determine whether the product has defects without prejudice to product status and performance by measuring physical quantities. Therefore, the application of non-destructive testing techniques has a very important role for meeting the specific requirements of military products and has a wide range of applications in the defense science and technology industry. So the correct application of NDT techniques can obtain significant economic, social and military benefits and has also being proved by development of defense industry decades.

2. Method of application
Used for testing in service of the equipments such as tank, armored submarine, warship, submarine and flaw detection such as the parts of main structure welding, main load-bearing, wears, the main detection methods are vortex, ultrasonic to achieve the goal of early found early prevention.
Ultrasonic testing is the method of testing parts defects which using the principle that when the ultrasound penetrates into depths of the metal materials and into another section from a section, a reflection the edge of the interface is created. When the ultrasonic beam gets to metal interior from part surface through the probe and encounters defects and part bottom, a reflected wave appears and forms impulse waveform on screen, you can judge defect locations and sizes by the impulse waveforms. Ultrasound is used mainly for detecting the internal defects such as structures, steel plates, welds.
SMART - 2005 detecting field for a certain type of armored vehicles
Vortex testing is using the principle of electromagnetic induction makes a sine wave current to excite probe coil, when the probe is close to metal surface, induced current is produced on metal surface by alternating magnetic field around the coil. For flat metal, the flow direction of induced current is circular with coil concentric, it is shaped like a swirl, known vortex. Meanwhile the vortex also produces magnetic field with same frequency and is in the opposite direction with coil magnetic field. The loss resistance in vortex channel and reverse magnetic flux produced by vortex are reflected to the probe coil, they changed the size and phase of coil current, also the impedance of the coil. Therefore, when probe moves on metal surface and encounters defects or changes such as material, size, the adverse effect of vortex magnetic field to coil is changed and the change of coil impedance caused. Measuring the variations by vortex testing meter, defects or other physical properties changes on metal surface can be identified. The vortex equipment is mainly used for testing surface and near surface crack, corrosion defects of equipment.
Welds special vortex probe
3. Superior characteristic     
The equipment made of our company integrates three functions such as vortex, magnetic memory, ultrasonic, and can make comprehensive testing, analysis and easy to operate on site, without disassembling and installing equipment, and do not need to remove surface paint coating.
4. Recommend instruments