Showing results: 106 - 120 of 163 items found.
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National Technical Systems
NTS is the world’s foremost authority in lightning testing. With the industry’s top thought leaders, you get to work side-by-side with experts who shape industry standards, sit on advisory boards, and author textbooks. Trusted by NASA and the FAA, NTS delivers best-in-class lightning testing at different locations throughout the United States.
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National Technical Systems
Fourier Transform Infrared Spectroscopy (FTIR) is a standard technique used in the identification of contaminating materials on the surface of printed circuit boards (PCBs) and around the leads of electronic components (BGA, capacitors, resistors, inductors, connectors, diodes, oscillators, transformers, IC, etc.) on printed circuit assemblies (PCAs). Additionally, FTIR can be used for “simpler” identifications, such as determining a specific type of plastic or rubber compound.
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National Technical Systems
X-ray computed tomography scanning, or X-ray CT scanning, has proven to be a very powerful tool in the field of non-destructive testing. NTS Chesapeake has the capability to obtain highly detailed 3D images of the internal components of materials and products, thus eliminating the need for costly and time-consuming destructive inspection.
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National Technical Systems
A reverberation chamber, sometimes known as a mode tuned/mode stirred chamber, is a shielded enclosure or resonant cavity for RF testing. This chamber is statistically isotropic, random polarity, having RF uniformity within specified limits. Typically a reverberation chamber has a paddle (or tuner) which stirs the field, randomizing the boundary conditions.
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National Technical Systems
Testing for electrochemical migration (ECM) would occur in the case of a field failure return. Metal migration between isolated conductors on a completed printed circuit assembly may produce electrical shorts.Why does this growth occur and what do you need to look for? Basically, we need to know if our assemblies are “dirty.” By dirty, we mean littered with ions. Ions on printed circuit assembly surfaces can cause short circuits. In simple terms, shorts occur when the space between the conductors is bridged by dendrites formed by re-deposited metal ions. This metal migration is best described by IPC as a reverse plating of the conductors in the presence of ions, water and an electrical potential.
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National Technical Systems
According to statistics, there are over 2.4 billion people around the world on the Internet today, and there are more than a trillion web pages. As with any other piece of software or hardware, it’s important to evaluate your website before it’s released. Even if it has been released, an independent third-party evaluation may help you determine the issues that your customers/users may be seeing that should be addressed to keep them coming back.
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National Technical Systems
One of the cornerstones of NTS’ work in smart grid has been our certification program for the ZigBee Alliance. One of ZigBee’s largest and most popular application profiles is the ZigBee Smart Energy standard. NTS is the largest certifier of all ZigBee products, and has completed certification for over 85% of the Smart Energy products certified by the ZigBee Alliance. We have developed test tools to assist in the pre-certification of new devices for manufacturers, as well as validation of devices for utilities. In addition, NTS also has been selected by USNAP to perform certification testing for smart appliance manufacturers.
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National Technical Systems
The ever advancing electronics industry requires an increasing need for electronic component testing (IC testing) and component verification. The component test capabilities and component verification lab at NTS performs test and inspection to determine proper component functionality, verification or failure analysis (F/A).
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National Technical Systems
NTS Camden (Arkansas) is an integral part of the NTS Defense Group. The facility has logged more than 20 years of experience performing destructive testing for the defense industry, and has provided IED and mine blast test services to some of the nation’s premiere armor and armor systems developers. NTS Camden is ready and able to assist armor manufacturers and developers in accurately assessing the performance of current and new armor designs against improvised explosive devices and mine blast threats.
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National Technical Systems
Surface Insulation Resistance (SIR), as defined by IPC, is the electrical resistance of an insulating material between a pair of contacts, conductors, or grounding devices that is determined under specified environmental and electrical conditions.In respect to the world of printed circuit boards (PCBs) and printed circuit assemblies (PCAs), SIR testing—also commonly referred to as Temperature Humidity Bias (THB) testing—is used to evaluate a product’s or a process’ ability to resist “failure” by means of current leakage or an electrical short (i.e., dendritic growth). SIR testing is typically performed under elevated temperature and humidity conditions—such as 85°C/85% RH and 40°C/90%—with periodic insulation resistance (IR) measurements obtained.
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National Technical Systems
NTS has years of experience performing compatibility and functionality testing specifically on wireless products. Testing covers all the latest and greatest protocols and technologies, including Wi-Fi, ZigBee, Bluetooth, and even cellular technologies (e.g., 4G LTE, CDMA, GSM, etc.).
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National Technical Systems
NTS testing covers compatibility, functionality, interoperability, performance, and competitive analysis.
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National Technical Systems
Fluid power systems play a critical role in many industries, and are one of the three major forms of power transmission along with electrical and mechanical power systems. In many cases, however, mechanical and electrical methods cannot provide a practical power transmission solution. In these cases, fluid power (whether hydraulic or pneumatic) is often used because it can deliver linear and rotary motion with high force and torque within a smaller, lighter package than is possible with other forms of power transmission. Some of the most common applications of hydraulic systems are in heavy construction and off-highway equipment. Other applications can be seen in aircraft, mass transportation systems (such as trains), construction, mining, agriculture, waste reduction, and utility equipment. The various components (such as valves, actuators, cylinders, accumulators, etc.) that make up these systems must perform reliably and have a reasonable life span. Only a thorough test program carried out under simulated field use conditions can insure that any component part or assembly will meet its original design goals for performance, reliability and longevity. Many internationally recognized organizations have published test standards that apply to hydraulic/pneumatic and fluid power systems and components. Some of these organizations are:
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National Technical Systems
Contamination Analysis, which begins with a set of basic evaluations that on most occasions will answer the “What is this?” question. The protocol contains four parts:*Visual Examination*Organic Analytical Testing by Fourier Transform Infrared (FTIR) Spectroscopy*Elemental Analytical Testing by Scanning Electron Microscopy / Energy Dispersive X-Ray Spectroscopy (SEM/EDS)*Ionic Analytical Testing by Ion Chromatography (IC)