Evaluation of an Instrumented Human Surrogate Torso Model in Open Field Blast Loading

摘要

A 50th percentile Human Surrogate Torso Model (HSTM50) was constructed using biosimulant materials to represent the thoracic skeletal structure, internal organs, and soft tissues. The model was instrumented with pressure sensors embedded in each organ, accelerometers rigidly mounted to the sternum, and a load cell aligned with the vertebral column. The HSTM was exposed to a series of open-field blast tests. Sensor data clearly conveyed an initial rise in organ pressure due to the arrival of the incident shock wave followed by a delayed secondary peak of lesser magnitude due to the arrival of the ground-reflected incident shock wave. For repeat test conditions, the HSTM provided sensor response deviation within the inherent variability of field pressure data recorded for various tests of equal weight charges. This test series demonstrated the HSTM50 sensitivity to blast threat conditions including variations in charge weight and type. The HSTM50 proved to be a repeatable, durable, non-homogeneous test device complete with skeletal structure and soft tissue. The system allowed for the dynamic measurement of internal pressures, acceleration, and spinal load as a result of various blast conditions.