Showing results: 31 - 45 of 158 items found.
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National Technical Systems
Accelerated weathering is the simulation of the damaging effects of long term exposure of coatings, materials, and products to outdoor conditions. There are a number of different types of outdoor conditions accelerated weathering addresses, including wind, rain, icing, sand and dust, and of course, UV exposure.
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National Technical Systems
The American Society for Testing and Materials was founded over a century ago to answer the call for more uniform quality manufacturing standards in the railroad industry. ASTM International is a global organization centered on the development and delivery of international standards. As indicated on its website, ASTM has published nearly 12,000 test methods and standards. Known for advanced technical quality and market relevance, ASTM standards are used in research and development, product testing, and quality systems. ASTM standards are critical elements of the information infrastructure that guides manufacturing and trade in the global economy.
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National Technical Systems
Conductive Anodic Filament (CAF) testing helps to determine the reliability of a printed circuit board (PCB) laminate material or a finished product. With conductor spacing and overall part sizes getting smaller and smaller, the necessity for this test is increasing.
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National Technical Systems
With one of the nation’s largest networks of ISO/IEC 17025 accredited test laboratories, NTS has been providing MIL-STD turnkey testing solutions, including ammunition testing and firearm testing, to the U.S. military, government, and commercial enterprises for more than 50 years. All of our facilities are state-of-the-art, and our personnel — always willing to share their knowledge and insights to determine the right tests for your needs — are among of the best in the industry.
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National Technical Systems
The use of Scanning Electron Microscopy / Energy Dispersive X-Ray Spectroscopy (SEM/EDS) in the analysis of failure related issues of printed circuit boards (PCBs), assemblies (PCAs), and electronic components (BGA, capacitors, resistors, inductors, connectors, diodes, oscillators, transformers, IC, etc.) is a well-established and accepted protocol. As opposed to or simply in addition to normal optical microscopy, SEM/EDS allows for the “inspection” of areas of interest in a much more informative way.
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National Technical Systems
Dielectric Constant is used to determine the ability of an insulator to store electrical energy. The dielectric constant is the ratio of the capacitance induced by two metallic plates with an insulator between them to the capacitance of the same plates with air or a vacuum between them. Dissipation factor is defined as the reciprocal of the ratio between the insulating materials capacitive reactance to its resistance at a specified frequency. It measures the inefficiency of an insulating material. If a material were to be used for strictly insulating purposes, it would be better to have a lower dielectric constant.
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National Technical Systems
NTS’s Camden, Arkansas location is proud to host the National ordnance and Ballistics Test Center, one of the best-equipped military ordnance and munitions testing facilities in the country. NTS Camden is a multidisciplinary test facility that has been designed from the ground up to provide a safe, cost-effective theatre for ordnance and munitions-related analysis, including armor testing, explosives testing and more.
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National Technical Systems
Comparative tracking index (CTI) is used to assess the relative resistance of insulating materials to tracking. The CTI expressed as that voltage which causes tracking after 50 drops of 0.1 percent ammonium chloride solution have fallen on the material. The results of testing the nominal 3 mm thickness are considered representative of the material’s performance in any thickness.
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National Technical Systems
During installation, transport or repair, many products have a risk of being dropped. While handlers receive training to treat these items with care, mishaps happen to even the most experienced professionals. Drop testing ensures the product stays in its original condition from manufacturing to implementation.In addition to ensuring that products survive their journey from point A to point B, many products are at risk for being dropped or jarred throughout their lifetime. These products include handheld devices and tools, lab equipment, personal computers, field measuring equipment, construction tools, etc. In such cases, drop testing may be required to ensure that expensive tools or equipment are capable of surviving the perils of expected use and abuse.
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National Technical Systems
Conformal coating is applied to electronic circuits to provide a protective barrier to moisture and contamination and to provide electrical insulation. The most common specifications used for conformal coating testing are IPC-CC-830B, Amendment 1: Qualification and Performance of Electrical Insulating Compound for Printed Wiring Assemblies and MIL-I-46058.
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National Technical Systems
Compatibility and interoperability testing focuses on exercising the product-under-test under an array of software and hardware variables (e.g., different operating systems, additional software applications, such as web browsers, and hardware, such as graphics adapters, processors, chipsets, etc.). With almost three decades of growth and refinement, NTS’s test methodologies are unparalleled in the area of compatibility and interoperability testing. With our extensive in-house library of up-to-date software and hardware, NTS can simulate a wide variety of real-world environment in which your product may be utilized. Test failures are routinely regressed using industry standard methodologies, and known functional hardware and software. Compatibility testing seeks to verify the compatibility of a vendor’s product specifically with particular hardware or software (e.g., with the operating system, a word processor with a printer, etc.). Interoperability testing, on the other hand, typically focuses on validating “coexistence” (e.g., a word processor and spreadsheet program can both be installed on the same platform without causing problems with the other).
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National Technical Systems
Destructive Physical Analysis (DPA) is the process of disassembling, testing, and inspecting electronic components to verify the internal design, materials, construction, and workmanship. This process of sample inspection is used to help ensure that electronic components are fabricated to the required standards. Destructive Physical Analysis is also used effectively to discover process defects for identification of production lot problems.
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National Technical Systems
Motorized products must pass a series of tests to ensure readiness for mass production. The parts that comprise an automobile, for example, are submitted to dynamics test labs to endure varying degrees of pressure, noise, vibrations and other challenging forces.
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National Technical Systems
Counterfeiting becomes profitable when scrapped components, components from recycled products, or inexpensive components can be “remarked” and sold as a new, more expensive, higher reliability version. Reasons for the proliferation of counterfeiting include profitability, the low probability of being caught, and the exporting of US electronic waste for disposal in poorer countries.Much of the effort today has not been placed on preventing counterfeiting but rather screening components to identify and remove counterfeits before they are used in a finished product.
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National Technical Systems
Compression testing is a very common testing method that is used to establish the compressive force or crush resistance of a material and the ability of the material to recover after a specified compressive force is applied and even held over a defined period of time. Compression tests are used to determine the material behavior under a load. The maximum stress a material can sustain over a period under a load (constant or progressive) is determined.