Textile Friction Tester - AATCC 118 & ISO 12947 Surface Lubricity

Dynamic coefficient of friction tester Technical parameters

Friction coefficient tester operation process

I. Preparation

Check the instrument: Make sure the power connection of the friction coefficient tester is stable, check the integrity of each component, especially the measurement sensor and drive system. Make sure there is no damage or abnormality in the equipment.

Clean the instrument: Clean the working surface of the friction tester to ensure that there is no oil, dust and other impurities.

Select test material: According to the test requirements, select the appropriate friction material and test object. Make sure the surface of the material is flat and clean to avoid dust or oil affecting the measurement of friction.

II. Sample Preparation and Installation

Fixed specimen: Fix a specimen with the test surface upward and flat on the horizontal test bench. The length direction of the specimen and the test bench should be parallel.

Installation of the slider: the test surface of the other specimen downward, wrapped around the slider, with tape on the front edge of the slider and the upper surface of the fixed specimen.

Placement of the slider: the fixed specimen slider without impact on the first specimen in the center, and so that the test direction of the two specimens and the direction of the slider parallel to the direction of the force measurement system is not subject to force.

Third, set the test parameters

Setting parameters: in the tester's control panel, set the relevant parameters, such as load, speed, test time and so on. These parameters need to be adjusted according to the actual test requirements to ensure compliance with the experimental design specifications.

Calibrate the instrument: Before the test, the equipment needs to be calibrated to ensure the accuracy of the measurement results. The calibration process includes adjusting the level of the rack, setting the test speed, calibrating the quality of the slider and other steps.

Execute the test

Start the test: After confirming that all the settings are correct, start the friction coefficient tester and begin the testing process. During the testing process, the instrument will automatically record the data of friction force, displacement and time, and calculate the friction coefficient through the algorithm. The operator should pay attention to monitor any abnormalities during the process to ensure that the test runs smoothly.

Record data: During the test, the instrument will automatically generate a data report. The operator should check the accuracy of the data and analyze and summarize it as needed. When recording the results, be sure to save all the original data for subsequent verification and review.

V. Data Analysis and Report Generation

Calculate the friction coefficient: The formula for calculating the friction coefficient is usually the ratio of friction force to positive pressure. This can be automatically processed by data analysis software. The generated report should contain information such as test conditions, friction coefficient values and their error ranges, and be interpreted in detail as needed in order to make a scientific evaluation of the friction characteristics of the material.

Evaluate the results: Compare the test results with relevant standards and specifications to determine whether the product meets the design requirements and the friction performance indexes specified in the standards. Identify problems that may occur when the product is in a vibration environment, such as resonance, structural weaknesses, loose connections, etc.

VI. Follow-up Maintenance

Clean the instrument: after completing the test work, the coefficient of friction tester should be cleaned in time and carry out routine maintenance checks. Especially the sensor and measuring system should be calibrated regularly to ensure the accuracy of each test.

Storage environment: The storage environment of the equipment should be kept dry and avoid prolonged exposure to high temperature or humid environment to prolong the service life of the instrument.

Common Problems and Solutions

Large fluctuation of friction coefficient data

Solution: Check the stability of the instrument to ensure that the loading device and test platform have not loosened. Ensure the material surface is smooth and clean to avoid dust and contaminants affecting the friction test.

Deviation of test results

Solution: This may be due to improper sample installation or changes in the testing environment. Recalibrate the instrument, make sure all parameters are set accurately, and adjust the temperature and humidity of the experimental environment if necessary to reduce the interference of external factors.

Test Standard

The design, manufacture and performance testing of the coefficient of friction meter are usually based on a number of domestic and international standards, including but not limited to:

GB/T 10006 “Method for Determining the Coefficient of Friction of Plastic Films and Sheets”.

ASTM D1894 “Standard Test Method for Static and Dynamic Coefficient of Friction of Plastic Films and Sheets”.

ISO 8295

TAPPI T816

These standards not only specify the basic performance requirements of the tester, but also detail the test methods and data processing procedures.