Showing results: 76 - 90 of 163 items found.
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National Technical Systems
Nearly every material known to man is subject to fatigue failure. This is true of polymers, plastics, composites, and metals. The general rule is as follows: if a person can bend something back and forth enough times, they can eventually break it.
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National Technical Systems
Hail is an extremely destructive force of nature, especially for aircraft, with impacts occurring at more than 600 mph. NTS performs hail and stone strike testing and high velocity hail strike testing. These tests can be performed using clear ice, stone and aluminum projectiles of up to two inches in diameter, fired at velocities of up to 741 miles per hour(331.4m/sec, 1087.4 f/sec). Typical test programs include aircraft windshields, antennas, radomes, and wheel/brake assemblies. Using a laser equipped system with a high degree of accuracy, repeatable impacts can be performed to within a quarter inch of the desired target. This accuracy allows NTS to test even the smallest of test samples, as well as limit the potential damage area of larger units.
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National Technical Systems
Will your products, subsystems or components operate as designed when exposed to fire conditions, or will they go up in flames? Fire and flammability testing is required for products used in a wide range of industries, including Aerospace, Defense, Telecommunications, and Consumer Electronics. NTS offers fire and flammability testing services, typically falling into two categories: 1) ignition and flame spread, and 2) fire resistance.
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National Technical Systems
NTS performs a wide variety of fluid testing across a large spectrum of pressure, temperature, and rated fluid flow, as well as combined testing programs on a vast array of aerospace fluid components and systems such as process air, bleed and ram air, fuel systems, hydraulic systems, high pressure systems and cryogenic systems.
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National Technical Systems
Firearms require extensive testing before they are suitable for either the consumer market or for use in combat situations. At National Technical Systems (NTS), our facilities have been specially designed to meet these testing requirements. Our test ranges are equipped with industry-leading monitoring and data acquisition equipment that make both regulatory compliance and general QA simple.
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National Technical Systems
Whenever products and materials spend extended periods of time in a humid environment, various types of breakdowns can be expected. Coatings can fail. Electronic and optical equipment tends to degrade. Fuels break down. The list of associated failures is extensive.
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National Technical Systems
NTS performs pressure, flow, and combined testing programs on flexlines, piping, storage vessels and measurement and control systems utilizing the actual fluids that these systems will use in service. NTS has the ability to test anything from heat exchangers, meters, sensors, valves and filters to high pressure storage tanks (such as those on launch vehicles and satellites) and rocket test stand fuel systems utilizing any of the following: liquid fuels, gasoline, JP1, hypergols, hydrogen, oxygen, steam, diesel, nitrogen, Skydrol, kerosene, cryogenics, ammonia, hydrogen peroxide and other substances.
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National Technical Systems
Gravelometer testing is designed to evaluate the resistance of vehicle surface coatings (paint, clear coats, metallic plating, etc.) to chipping caused by the impacts of gravel and other flying objects in accordance with SAE and ASTM standards. The primary usage of this test is to simulate the effects of the impact of gravel or other debris on automotive parts. Test samples are typically mounted in the back of the Gravelometer, and air pressure is used to project 1 pint (approximately 300 pieces) of gravel at the sample. The test sample is then removed and gently wiped off with a clean cloth. Tape is then applied to the entire tested surface. Removal of the tape then pulls off any loose fragments of the coating. The appearance of the tested sample is then compared to standard transparencies supplied by SAE to determine the chipping ratings. Visual examination can also be used to describe where in the coating/substrate system that the failure has been induced.
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National Technical Systems
MIL-STD-464 sets out minimal acceptable standards for the electromagnetic compatibility of ordnance and related equipment used in airborne, sea, space and ground-defense systems. Firing circuits contained within these devices is inherently susceptible to electromagnetic environments. Testing is critical for managing the risks associated with exposure to normally occurring EMR.
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National Technical Systems
A membrane switch is a low power electrical switch, comprised of silver or graphite impregnated ink, printed and cure bonded to a plastic substrate – polyester being the most common – and assembled with various adhesive layers and finished with a graphic overlay. Major benefits in designing a membrane switch into your product include ease of cleaning, environmental sealing, low profile, and the ability to create a visually attractive interface.
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National Technical Systems
The physical and mechanical testing of a product comprises a critical part of the product and development process. Applied physical force such as vibration, shock stresses, and strain can reveal the inelastic behavior of the material. Mechanical testing allows the product developers to understand the product better, identify vulnerabilities, and establish stronger quality control. Mechanical testing employs a variety of strength tests that can determine the suitability of a material or component for the intended application. It measures characteristics such as elasticity, tensile strength, elongation, hardness, facture toughness, impact resistance, stress fracture, and the fatigue limit.
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National Technical Systems
The importance of materials testing cannot be underestimated. Across every major industry, manufacturers, developers and operators of critically important systems, products and components need to be assured that the materials employed in forming their equipment are up to their intended tasks. That’s why the most diligent method of verifying that the materials companies use in manufacturing processes will perform to expectations and adhere to all applicable regulations is through reliable materials testing.
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National Technical Systems
When the required testing of a product includes a transport simulation test, there are several standards that various organizations have published for package testing methods. These include the International Organization for Standardization (ISO), American Society for Testing and Materials (ASTM), Military Standards (MIL-STD-810), and in more recent years the International Safe Transit Association (ISTA) whose test standards are becoming more widely accepted. ISTA has organized its test protocols into Series, and there are a total of seven Series. Testing must be performed in an ISTA certified lab and must comply with minimum requirements of a current ISTA testing procedure. But In order to perform a proper ISTA certified test, which of the series should be used?
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National Technical Systems
Lightweight Shock Machine (LWSM) Testing per MIL-DTL-901E is the military specification covering shock test requirements for shipboard machinery, equipment, systems and structures. Anyone who produces an item for military use in any of these shipboard categories will likely need to complete this testing. The purpose of this testing is to verify the ability of shipboard installations to withstand shock loadings which may be incurred during wartime service due to the effects of conventional or nuclear weapons. These requirements grew out of the Navy’s experiences during World War II and the subsequent underwater explosion (UNDEX) experiments. In many cases, it was found that critical ship systems could be disabled by the shock effects of nearby weapons explosions that were not a direct hit on the ship itself.
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National Technical Systems
From cheap toys and smartphones to sophisticated computers and radar detector systems, printed circuit boards (PCB) are critical components for today’s electronic and industrial technology. Almost every electronic device has one of these self-contained modules of complex interconnected electronic components, which include resistors, capacitors, transistors, diodes and fuses.
