Wearable air blast protection device having at least two attenuating regions

A method of manufacturing a wearable air blast wave energy protection device, the method comprising:

• (a) receiving a layer of a first material shaped and configured to provide a first advantageous human protective and primarily reflective response to a specified incident air blast wave energy, the layer of the first material selected at least partially based on a first acoustic impedance of the first material to the specified incident air blast wave energy, and on a substantial mismatch between the first acoustic impedance and the acoustic impedance of air:
• (b) receiving a first attenuating-region material shaped and configured to provide a second advantageous human-protective and primarily attenuative response to the specified incident air blast wave energy transmitted through the layer of the first material, the first attenuating-region material selected at least partially based on a first inelastic response of the first attenuating-region material to a first range of overpressures of the specified incident air blast wave energy transmitted through the layer of the first material;
• (c) receiving a second attenuating-region material shaped and configured to provide a third advantageous human-protective and primarily attenuative response to the specified incident air blast wave energy transmitted through the layer of the first material, the second attenuating-region material selected at least partially based on a second inelastic response of the second attenuating-region material to a second range of overpressures of the specified incident air blast wave energy transmitted through the layer of the first material;
• (d) arranging the first attenuating-region material and the second attenuating-region material into a layer of a second material providing a fourth advantageous human-protective and substantial attenuative response to the specified incident air blast wave energy transmitted through the layer of the first material;
• and
• (e) joining at least a portion of a back surface of the layer of the first material to at least a portion of a front surface of the layer of the second material.