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An investigation of standard penetration test hammer efficiency through measurement of impact velocity and stress wave energy : [supplementary material] Miller, Kurtis Henry


A database of Standard Penetration Test (SPT) measurements. All the SPT data collected for this thesis is presented in a supplementary spreadsheet. A single automatic SPT hammer was used for all tests, the eSPT from MARL Technologies. Drop efficiency (e1) and ETR were calculated using the nominal SPT energy (475 J). e2 is also known as post-impact efficiency and is the quotient of impact energy over stress wave (FV) energy. The modified energy transfer ratio (e2m) was calculated using the measured drop height when available, or otherwise the nominal drop height (762 mm). Every data point has the following characteristics: Hammer mass = 63.5 kg (140 lb), Rod type = AW, Rod area = 8.0 cm2 (1.24 in2). Post print. No embargo. Copyright Kurtis Henry Miller. The attached files are supplements to the author’s master's thesis at http://hdl.handle.net/2429/81466

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Attribution 4.0 International