鞋类测试项目.ppt

文档介绍：鞋类测试项目
Shanghai Textile
松紧带疲劳测试
SATRA TM 103 Resistance of elastics to repeated extension
测试原理:松紧带试样以其最大有效伸长(limit useful extension)反复拉伸,在预先设定的次数后评估试样的破坏程度。
试片数量:2个
试片大小:长80±10mm,宽度为松紧带整个宽度。
机器速度:60转/min
结果判断:
一般要求:≤10%
确定松紧带的最大有效伸长
SATRA TM 102 Measurement of the Limit of Useful Extension of Elastics
测试原理:松紧带试样的两端用PU缝起来起到加强的作用,然后用拉力机拉伸,得
到一条曲线,根据曲线求得最大有效伸长。
拉力机速度:100mm/min或者50mm/min。
试片数量:2个
试片尺寸:长130mm,宽度为松紧带整个宽度,如果松紧带的宽度大于75mm,则从
一边修剪为75mm。
试片尺寸
最大有效伸长的确定
最大有效伸长的确定
松紧带取样尺寸
魔术贴Peel和Shear Strength测试
常用标准
SATRA TM 123 closure strength of touch and close fasteners
ASTM D 5170 Peeling Strength
ASTM D 5169 Shear Strength
BS EN ISO 22776 Footwear -- Test method for accessories: Touch and close fasteners -- Shear strength before and after repeated closing
ISO 22777 Footwear-Test methods for accessories:Touch and close fasteners-Peel strength before and after repeated closing
SATRA TM 123 Closure Strength of Touch and Close Fasteners
Peel strength
Both parts of a touch and close fastener are pressed together under controlled conditions, and the average force required to peel them apart along their length from either end is measured with a tensile testing machine. This procedure is then repeated with the one of the parts of the fastener turned through 180 degree.
试片数量:4个
尺寸:100mm*25mm
取样
结果表示:
从拉力机程序中计算出每个试片的平均值,然后除以试片的有效宽度,即为剥离强度。
最终结果为4个试片的平均值。单位为N/mm, N/mm。
一般要求: >= daN/cm
5000次疲劳测试后:. >= daN/cm
取样和测试程序