Automatic Spt Monitor

Abstract

An Apparatus Is Used With An Impact Hammer Penetration Assemble Such As Standard Penetration Test (Spt) In Geotechnical Engineering. The Impact Hammer Penetration Assembly Comprises A Penetration Sample, A Series Of Rods Coupled Together And An Impact Hammer Apparatus. The Drop Of The Hammer From A Constant Height Hits The Coupled Rods And Sampler In Series And Forces The Sampler Deeper Into The Ground. The Apparatus Includes A Tip Depth Transducer And Sampler To Output A First Electrical Signal That Is A Function Of The Sampler Tip Position. A Shock Force Transducer Communicates The Axial Shock Force In The Rod To Output A Second Electrical Signal That Is A Function Of The Rod Shock Force And Hammer Blows.; A Shock Penetration Transducer Communicates The Movement Of The Coupled Rods And Sampler To Output A Third Electrical Signal That Is A Function Of The Sampler Penetration Due To The Hammer Blows. A Micro-Process Controller Monitors And Processes The First, Second And Third Signals In Real Time.