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Twist not only affects the tensile properties of yarn but also influences its diameter, specific volume, softness, and stiffness. These factors, in turn, impact the fabric's coverage performance, ther...
1. Basic Introduction to Environmental Chambers An environmental test chamber is a sealed experimental device capable of precisely simulating various natural or extreme environmental conditions (such ...
Children's toy safety kinetic energy testing is a key testing item for assessing whether the kinetic energy generated by toys in motion (such as projectile, rotation, impact, etc.) may cause mechanica...
1. Slip resistance testing of shoes (1) Ramp Test Standards: EN ISO 13287, DIN 51130 Procedure: Test platform: Adjustable-angle ramp (0°–35°), surface covered with standard test materials (e.g., ceram...