Used for testing indexes of polyurethane monofilament, such as breaking tenacity, elongation at break, load at specified elongation, relaxation of stress, plastic deformation, etc.
用于测定氨纶丝断裂强度、断裂伸长率、定伸长负荷、应力松弛，塑性变形等性能指标。
2
The stress relaxation experiments of rocks under the deformation at peak load and load-unload experiments before peak load are carried out.
进行了岩石在峰值荷载变形条件下的松弛试验及峰值荷载前的加卸载试验。
3
The relaxation test machine includes one deformation measurer set on the test sample to measure the length change of the test sample.