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A new abdominal deformation measuring system for Hybrid III dummy has been developed in order to evaluate the abdominal injury by using the dummy. From the dynamic abdominal deformation of the dummy, the abdominal compression velocity V, the compression ratio C, and the maximum value of the product VC, expressed as [VC]MAX, can be calculated. This abdominal deformation measuring system consists of an abdominal insert having the same compression characteristics as those of the human body, a dynamic deformation sensor, and an analysis program. The abdominal insert is made of elastic foam rubber and has a shape fitted to Hybrid III. The deformation sensor in a band shape is a thin stainless steel band with 25 strain gauges on it. Each strain gauge measures the curvature on its mounted position. Since the deformation sensor is located along the surface of the dummy abdomen, the sensor deforms as the dummy surface deforms.

Noise level prediction computer code ACOUST/BOOM has been developed to analyze the sound pressure radiated by a vibrating structure and calculate the acoustic resonance of the field. The program is based on the numerical analysis computation of a sound wave equation in a three-dimensional field using the boundary element method. The boundary element method uses simplified input data, reduces computation time and cost, and produces highly accurate results. Applications has been performed on sound radiation analysis for engine oil pan, engine head cover and horn type speaker and also on the acoustic analysis for sedan compartment models, which confirmed the accuracy and the versatility of the program.