Test Methods for Nissan NES M0076 Automotive Carpet

The “Nissan NES M0076 Test Methods for Automotive Carpets” standard, developed by Nissan, describes methods for testing raw fabric for automotive carpet applications.

Test methods are divided into 28 types in the table given in the standard. The tests to be applied are listed as follows:

• General tests
• Dimension measurement
• Thickness measurement
• Mass measurement
• Apparent yarn count or apparent fineness test
• Textile weaving test
• Measurements and stitches
• Appearance test
• Physical properties
• Tensile strength and elongation test
• Tear strength test
• Tassel binding strength test
• Compression elasticity test
• Wear resistance test
• Hardness test
• Electrostatic charge test
• Tensile strength test due to water exposure.
• Mold resistance test
• Light exposure resistance test
• Color fastness test against water
• Color fastness to dry friction
• Tensile test due to exposure to high temperature.
• Tensile test resulting from heat cycling exposure.
• Tensile test due to exposure to low temperature.
• Heat resistance test
• Flammability test
• Nitrogen oxide (NOx) yellowing test procedure
• Stain resistance test
• Stain removal resistance test
• Waterproof test
• Anti-fogging test
• Odor test

The test site conditions should be as follows:

• Standard conditions mean a temperature of plus/minus 2 degrees Celsius and a relative humidity of plus/minus 5 percent.
• The room temperature condition should be room temperature plus/minus 5 degrees and 65 percent plus/minus 20 percent relative humidity, respectively.

Samples stored under standard conditions are pre-dried at 40 to 50 degrees until the moisture content falls below the formal recovery of the carpet material. The samples are placed in a standard condition chamber and held there until the moisture content reaches equilibrium. They are then held in this chamber for further testing. Formal recovery is defined in JIS as the percentage of the mass of moisture in the fabric relative to the total bone dry mass allowed in commercial processes. To determine moisture equilibrium, samples are weighed at intervals of at least one hour. Equilibrium is achieved when the total sample mass changes by 0,1 percent or less in a one-hour interval.

Samples stored at room temperature are kept at room temperature until needed for further testing.

The standard conditioned test specimen should be immersed in normal water to which a non-ionic wetting agent (0,05%) has been added. The specimen is left in the water for 30 minutes. It is removed from the water, and any excess water in the test specimen is gently dried.

A test specimen should be used for two or more tests, excluding dimensions and appearance. Normal temperature water is water between 15 and 30 degrees Celsius.

Typically, a test sample is taken from a manufactured piece. As a rule, a flat section of the product is used for sampling. If sampling from a manufactured product is difficult, a test sample is taken from the raw fabric and this sample is reported. For tassel bonding strength testing, if necessary, additional samples may be taken from shaped parts as agreed upon between the parties, and these parts are identified and reported.

The samples are divided into 19 types, each to be used for the specific tests indicated in the table. The shape and dimensions of the test samples must conform to the table.

In the high-risk world of automotive manufacturing, where every component must withstand the rigors of daily use, extreme temperatures, and constant wear and tear, quality standards are undeniable. Among the standards developed by Nissan, the Nissan NES M0076 standard stands out as a specialized testing method focusing on the tensile strength and elongation properties of automotive carpets. This standard ensures that the floor coverings in Nissan vehicles can withstand the demands of real driving conditions without premature failure.

The Nissan NES M0076 standard is essentially a test protocol designed to evaluate the mechanical integrity of automotive carpet materials. Specifically, it measures tensile strength (the maximum stress a material can withstand while stretched or pulled before breaking) and elongation (how much a material stretches before breaking). These properties are critical for carpets exposed to pedestrian traffic, varying loads, and environmental stressors such as heat and humidity.

Testing typically involves preparing carpet samples according to Nissan's specifications and subjecting them to controlled tensile forces using specialized equipment such as universal testing machines. Key parameters include:

• Sample preparation: Carpet strips are cut to precise dimensions (typically 25 mm wide and 200 mm long) and conditioned in a controlled environment (e.g., 23 degrees Celsius and 50 percent relative humidity) to simulate standard usage conditions.
• Test conditions: Specimens are clamped at both ends and pulled at a constant speed (typically 100 mm/min) until fracture. Force and displacement are recorded to calculate metrics such as fracture load and percentage elongation.
• Passing criteria: While exact threshold values ​​may vary depending on the vehicle model or supplier contract, carpets should generally demonstrate a minimum tensile strength of 100-200 N/cm² and an elongation of 20-50%, depending on the material quality (e.g., nylon, polypropylene, or tufted or needle-punched).

This method is compliant with broader international standards such as ISO 13934-1 for textiles, but has been tailored to Nissan's unique requirements for automotive interiors. For example, it may include additional cycles for thermal aging or moisture exposure to simulate long-term cabin conditions.

Automotive carpets are not just an aesthetic feature; they are functional barriers that protect underlying structures from dirt, spills, and wear, while also providing acoustic insulation and comfort. A low-quality carpet can lead to rapid wear, corrosion of metal floors, or worse, bunching up under pedals, creating a slippery hazard.

For many years, our organization, with its competent and experienced staff, has been understanding the needs of its customers, providing the advanced testing services they require, and assisting in the establishment, implementation, and improvement of management systems. Within this framework, we also provide testing services to businesses in accordance with the "Nissan NES M0076 Test methods for automotive carpets" standard.