Application
The Dynamic Seam Fatigue Tester is designed to evaluate the strength and durability of upholstery seam constructions by applying cyclic, impact, and penetrating loads on a foam composite cushion. It simulates the stresses that upholstery fabrics experience during use. A rubber-faced wheel, 127mm (5”) in diameter, impacts the fabric from a height of 150mm (6”) with a mass of 3.75 kg (8.25 lbs) at a frequency of 25 times per minute for 7,000 cycles. The device is equipped with 3 work positions, and additional positions (up to 6) are available upon request.
Testing Method
What is a Dynamic Seam Fatigue Tester?
The Dynamic Seam Fatigue Tester is designed according to the ASTM D4033 standard, which specifies the method for testing resistance to yarn slippage in furniture decorative fabrics. This machine simulates the mechanical stresses and strains that upholstery fabrics, such as those used in sofas and automobile seats, undergo during use. It is specifically used to assess the dynamic fatigue resistance of seams in upholstery fabrics, helping manufacturers predict the lifespan of their products.
Test Principle
The test machine works by fixing a sample of upholstery fabric with a seam joint onto a specimen seat containing an elastic foam pad. The sample is clamped on both sides, and a free rotating rubber wheel impacts the fabric surface continuously from a certain height. The test continues for a set number of cycles, and the degree of damage to the sample is then assessed.
Why is Dynamic Seam Fatigue Testing Necessary?
Dynamic seam fatigue testing is crucial for evaluating the durability of seams in various surface materials, such as leather, synthetic leather, and fabric, commonly used in automobile seats and domestic sofas. The seam strength and resistance to fatigue directly impact the longevity of these seats. By testing the strength and endurance of upholstery materials, manufacturers can predict the lifespan of their products, providing valuable insights into improving durability and overall performance.
Specification
Standards
Power/Air Supply
- 220 / 110 V 50/60 Hz
- Air Pressure: 0.4 ~ 0.7 Mpa
Weight
350 Kg
Dimensions
1600 x 860 x 1450mm (L x W x H)
