EMC testing is the measurement of a device's immunity to RF emissions (EMI), and its RF emission levels. The device must meet IEC, MIL-STD, RTCA/DO-160, or related test standards. EMI/EMC testing indicates to engineers whether a device is compatible with its electromagnetic environment as...
In the US, the Environmental Protection Agency (EPA) is the federal agency that regulates vehicle emissions. Although this agency does not conduct testing directly, it does set the standards for vehicle emissions. In addition the EPA provides states with federal funding for low emission vehicle inc...
Acoustic emission testing works by mounting small sensors onto a component under test. The sensors convert the stress waves into electrical signals, which are relayed to an acquisition PC for processing. The waves are captured when the component is submitted to an external stimulus, such as high ...
Emissions testing - measures the amount of electromagnetic noise generated by a device during normal operation. The purpose of these tests is to ensure that any emission from the device are below the relevant limits defined for that type of device. This, in turn, provides a reasonable assurance...
The other part is the emission of electromagnetic energy while completing its own functions, such as traffic vehicles, overhead power lines, lighting fixtures, electrical machinery, household appliances, and industrial and medical radio frequency equipment. Therefore, this part becomes a source of ...
results. If the car's emission control systems are not in working order, they will need to be repaired so the car can pass inspection. Cars that fail cannot be registered, unless there is a special exception; in some regions, for example, vintage cars are not held to the samepollution...
wood, and paper tend to have high values. Reflective objects like silver and tinfoil have very low emissivity, and high reflectivity. When added together, the two values of emissivity and reflectivity should equal one, illustrating the balance between the reflection and emission ofradiant energy. ...
EMC test is known as Electromagnetic Compatibility, a certification for electronic devices to maintain their limitation of electromagnetic waves. As discussed in the previous article, there are two types of EMC tests – emission (EMI) and immunity (EMS). EMI (Electromagnetic Interference) tests measu...
COVID-19isestimatedtohavereducedcarbon dioxideemissioninChinabyaquarter.Itcausedfactoriestoshutdown,andslowedconstructionactivities. Recentanalysisshowsa70percentdropinflightsin FebruarycomparedwithJanuary.Andevengettingintoacarandgoingtoarestaurant,shopping mall,or concertposesariskofinfection,which meansthat manype...
射线检测Radiographic Testing(缩写 RT); 磁粉检测 Magnetic particle Testing(缩写 MT); 渗透检测 Penetrant Testing (缩写 PT); 涡流检测 Eddy Current Testing (缩写 ET); 声发射 Acoustic emission (缩写 AE) 。 1、目视检测(VT)目视检测,是国内实施的比较少,但在国际...