Abstract: Disclosed are a spandex fiber with a reversible triple-shape memory effect and a preparation method thereof. In the present disclosure, the spandex fiber includes the following raw materials in parts by weight: 3 parts to 100 parts of a crystalline polyester diol or a crystalline polyether diol, 1 part to 30 parts of a diisocyanate, 0.1 parts to 15 parts of a polyurethane chain extender, and 0.2 parts to 11 parts of a polyurethane cross-linking agent, where the crystalline polyester diol or the crystalline polyether diol has a number-average molecular weight of 1,000-10,000 Daltons. The spandex fiber has a reversible deformation process, shows an ability to transform between “stretched” and “shortened” states infinitely under the action of a temperature field, and can memorize two temporary shapes. Moreover, the spandex fiber has easily accessible raw materials and a simple preparation method, and is suitable for large-scale industrial production.

Abstract: A method for controlling an actuatable restraining device includes sensing a plurality of crash event indications in response to a crash event. The method also includes classifying the crash event in response to comparing the sensed crash event indications against one another to identify an oblique moving deformable barrier crash event. The method further includes controlling deployment timing of the actuatable restraining device in response to the classification of the crash event.

Abstract: A method for controlling an actuatable restraining device includes sensing a plurality of crash event indications in response to a crash event. The method also includes classifying the crash event in response to comparing the sensed crash event indications against one another to identify an oblique moving deformable barrier crash event. The method further includes controlling deployment timing of the actuatable restraining device in response to the classification of the crash event.