LIST OF CONTENTS 
INTRODUCTION 
Para. 
Resolution of the damage problem eco eee eee eee eee eee 1 
PHENOMENA IN OPEN WATER 
The general sequence of events eco eco eee eee eee eee 5 
The pressure pulse eee eee eco eee eco eee eee eee 12 
Variation of pressure with time and distance ees eco coe 42 
Variation of pressure with time (distance Seaplgea aool odo ale 
Variation of pressure with distance (time constant coe sendy 
Particle velocity eee eee coe eco eco eee coo eee 18 
Impulse per unit area ese coe eee eee eee ‘ees een 19) 
Energy associated with the pressure pulse eee eee eee eee 20 
Empirical data for the pressure pulse .++ cee cos coe cove 22 
Effects of finite amplitude of the pulse oor eee eos ooo 35 
Reflection of pulse at the sea surface eco eee eoe coe eee 39 
Reflection of pulse at the sea-bed eee eee eee eee eee ese 48 
Charge well away from sea=-bed eee eee eee eee ese ese 50 
Charge on sea=-bed eee eoe eee eee coe eee eee ese 56 
The gas bubble evo eee ece eee eee coe coo eee eee 62 
Oscillation and rise of bubble in mid-water «+. ose cvs eee 62 
Behaviour of bubble near free and rigid surfaces «+. +2 c+ 69 
Motion of bubble near sea surface eco eco eoe coe eee 71 
Motion of bubble near sea-bed coe eco eee eoe eee eee ie: 
Visible surface phenomena eee coe eee eee eve ose Spon ets 
Spray dome eee eos eco eee ece eos eco eee eee 75 
The plume eee coe eee eee eee eoe eee eee eee 841 
INTERACTION BETWEEN TARGET AND WATER 
PHENOMENA DUE TO NON-CONTACT EXPLOSIONS 
Pressure pulse*incident on infinite plane air-backed plate .-. «+. 85 
Water sticks to plate and does not cavitate eee eco eco eee 88 
Water exerts no tension on plate and does not cavitate ... SoGr uch) 
Water exerts no tension on plate and cavitates after plate 
leaves water ooo coe eos eoe eve coe eco eee bh 
Pressure pulse incident on a yielding diaphragm in an infinite 
unyielding baffle ... coe eee eoe eee eco eco ere 103 
Bodily motion of targets due to pressure pulse eee oe» Ao) Mesoom nal’ 
Behaviour of gas bubble in presence of target -+ e+s cee eve 124 
THE NATURE OF DEFORMATION OF THE TARGET 
Yielding of steel targets eee ece eee ece eee eee coe 127 
Fundamental assumptions of plastic yielding of steel eeley a necen ta) 
Plastic bending of a beam eoe ece eee eoe eos eco eee 137 
Dishing of a thin panel of plating ACOSO”: 8 Goo! Poaceae! Boom tEy) 
Plastic deformation under dynamic loads oie, mele seme ielcie i) Levee orl 4b), 
Rupture of steel eee eco ese eos eee eee ere eee 161 
Notch brittleness eee coe eee eee eee eco eee eco 163 
Shape and size of steel specimen or target .e2 ses cos eve 16h 
Speed of loading eee eos eee eve eoe coe eee eee 167 
