permanent set

The residual strain(ε′) characterizes the permanent set caused by chain slippage, and the recovery strain(ε-ε′) characterizes the deformation caused by changes of bond angle and the orientation of chain segment.

残存应变ε′表征了由链滑移而产生的永久形变，回复应变（ε-ε′）表征了键角变化和链段取向产生的形变。

decreased the elongation at break and permanent set at break.

减小扯断伸长率和扯断永久变形。

Permanent set is one method by which the contact force decreases over time.

永久变形是触点压力随着时间变化而降低的一种方式。

prediction for stress relaxation and permanent set of vulcanizate at room temperature with time exten-sion method

利用时间外延法预测硫化胶常温老化应力松弛和永久变形性能的研究

elongation at break and permanent set at break of poe decreased greatly after crosslinking.

POE的拉伸强度、扯断伸长率和扯断永久变形大幅度下降。

Addition of carbon black had the effect of reinforcing, increased the 100% tensile modulus, tear strength, tensile strength and Shore A hardness, decreased the elongation at break and permanent set at break.

加入炭黑，可以起到补强作用，提高100%定伸应力、撕裂强度、拉伸强度和硬度，减小扯断伸长率和扯断永久变形。

thus there will be a residual strain, or permanent set, after unloading.

卸载后，钢将会产生残余应力或者永久应力。

metal flow takes place within the plastic range of the metal, so that the bend retains a permanent set after removal of the applied stress.

金属的流动发生在金属的塑性变形范围之内，因此在施加的外力去除之后弯曲保持永久的变形。

when the load is removed, the elastic portion of the strain is recovered, but the plastic part (slip and creep) remains as permanent set.

当载荷卸除时，应变的弹性部分消失，但塑性部分（滑移和蠕变）保留下来，成为永久性应变。