Dynamic Seam Fatigue Tester - TNG1102

The TNG1102 Dynamic Seam Fatigue Tester is designed to evaluate the strength and fatigue resistance of seams in upholstery materials. The instrument applies cyclic, impact, and penetrating loads to fabric samples secured on a specimen seat with an elastic foam pad. The testing process involves a rubber-faced wheel, with a diameter of 127 mm, impacting the fabric surface from a height of 150 mm. The impacting mass is 3.75 kg, and the testing frequency is 25 ± 2 cycles per minute, with a maximum of 7,000 cycles. The tester complies with ASTM D4033. The machine is equipped with pneumatic driving mode and dimensions of 1600 mm in length, 860 mm in width, and 1450 mm in height. It is suitable for testing the dynamic fatigue resistance of sofa fabrics and similar materials. The TNG1102 is applicable to materials such as foam composites with dimensions of 228.5 x 280 x 178 mm. The tester supports multiple work positions and can operate at different cycle rates, including 23 or 27 cycles per minute, to accommodate various testing requirements.

Dynamic Seam Fatigue Tester is specially designed to test the strength of upholstery seam constructions which are covered by standard foam composite cushions by imposing a cyclic, impact, and penetrating load. Dynamic Seam Fatigue Tester enjoys a wide application in many industries, such as automobiles, garments, and fabrics.

A rubber-faced wheel of 127mm (5”) diameter impacts the fabric from a height of 150mm (6”) with a mass of 3.75 kg (8.25lbs), 25 times per minute for 7000 cycles. Besides, the Dynamic Seam Fatigue Tester has 3 work positions and 6 positions complying with the requirement. Moreover, it can make 23 or 27 cycles in one minute. Thus, it can be in operation at a relatively high speed.

• Testing frequency: 25+/-2 cycle/min
• Testing cycles: 7,000
• Impacting mass: 3.75 kg
• Foam composite: 228.5 x 280 x 178 mm
• Driving mode: Pneumatic
• Length: 1600 mm
• Width: 860 mm
• Height: 1450 mm
• Test Principle
• The dynamic seam fatigue test machine is suitable for testing the dynamic fatigue resistance of the seams of sofa fabrics. Fix a sample with a seam joint to a specimen seat containing an elastic foam pad, clamped on both sides, and use a free rotating rubber wheel of a certain weight, to impact the surface of the specimen continuously from a certain height, until the specified number of times to check the damage degree of the sample.
• Why do We Need a Dynamic Seam Fatigue Test?
• Dynamic seam fatigue testing machine is designed to test the seam fatigue degree of automobile seats, domestic sofas, and other surface materials. The surface materials of sofa seats, such as leather, synthetic leather, fabric, and so on, are stitching structures. And the seam strength of the connection and fatigue resistance for these materials put a direct effect on the service life of the seat. Apart from that, we can also predict the life effectively of the seat. In addition, we can provide a reference value for improving the service life of the sofa seat by testing the strength and life of the material seam.

The dynamic seam fatigue test machine is suitable for testing the dynamic fatigue resistance of the seams of sofa fabrics. Fix a sample with a seam joint to a specimen seat containing an elastic foam pad, clamped on both sides, and use a free rotating rubber wheel of a certain weight, to impact the surface of the specimen continuously from a certain height, until the specified number of times to check the damage degree of the sample.

Test procedure Sampling Pile sampling: determine the appropriate test method and take samples directly from the corresponding finished batch in random quantities, or take samples according to the agreement between the buyer and seller. Test samples: 1 Cut a certain number of warp and weft samples. These samples are representative of any yarn, fabric structure, or pattern of the fabric specified to be tested. 2 Check that the polyurethane foam material is properly positioned. Then start the test as long as we ensure that it does not need to be turned, flipped, or repositioned. 3 Next, the tested specimen with some form of the seam will be fixed to a specimen-holding box which contains a piece of resilient polyurethane foam, forming a cushion-like object with an appropriate elevation.