Method, medium, and device for testing lumbar spine performance of a crash test dummy

A method for testing lumbar spine performance of a crash test dummy, wherein the method is implemented based on a testing equipment;

• the testing equipment comprises a test frame, a pendulum, an energy-absorbing buffer block, and a sensor;
• a first end of the pendulum is pivotally connected to the test frame, while a second end of the pendulum is connected to a lumbar spine assembly of the crash test dummy;
• the sensor is mounted on the lumbar spine assembly;
• the energy-absorbing buffer block is mounted on the test frame;
• when the lumbar spine assembly is swung to a lowest position, the second end of the pendulum collides with the energy-absorbing buffer block;
• the method comprises:
• S1, selecting a lumbar spine performance test item;
• a configuration of the lumbar spine performance test item comprise a maximum collision velocity, whether there is a steel cable, and a testing angle, so that an operator is allowed to assembly the lumbar spine assembly of the crash test dummy based on whether there is the steel cable, to mount the lumbar spine assembly on the second end of the pendulum according to the testing angle, and to swing the pendulum to a corresponding angular position based on the maximum collision velocity;
• the stiffness of the lumbar spine assembly is greater when there is the steel cable being used compared to when the steel cable is not used, allowing for testing at different stiffness levels of the lumbar spine assembly;
• S2, collecting, by the sensor on the lumbar spine assembly, data of at least one preset physical quantity during the collision process between the pendulum and the energy-absorbing buffer block;
• wherein, the pendulum is released, by the operator, after the pendulum reaches the corresponding angular position;
• S3, determining whether the data of each preset physical quantity is within the corresponding data channel;
• and
• S4, if the data of each preset physical quantity is within the corresponding data channel, the lumbar spine assembly is deemed qualified for the current lumbar spine performance test item, and then determining whether the lumbar spine assembly has completed testing for all lumbar spine performance test items;
• if completed, the lumbar spine performance test for the corresponding lumbar spine assembly of the crash test dummy is deemed qualified, and the testing process is terminated;
• if not completed, the process returns to S1 to perform testing on the next lumbar spine performance test item;
• if the data of any preset physical quantity is outside the corresponding data channel, the lumbar spine performance test for the corresponding lumbar spine assembly of the crash test dummy is deemed unqualified, and the testing process is terminated.