to flex leather samples for a fixed number of cycles (typically 100 cycles/min). It is widely used for quality control in the footwear, garment, and upholstery industries. Exclusions
: Tests can be performed on "Dry" leather or "Wet" leather (submerged in water for 20 minutes before testing) to simulate different real-world conditions. 分析测试百科网 💡 Why It Matters astm d61821 pdf
While is the technically equivalent international standard, there are notable differences: to flex leather samples for a fixed number