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Showing 1 to 20 of 76 for “"penetrometer"”.
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Soil texture determination by an acoustic cone penetrometer method
… soil textural analysis using an automated cone penetrometer outfitted with a microphone, where the resulting sound produced from the cone-soil interface is used to determine soil texture. The system was tested in a laboratory setting using soil samples with well defined textural compositions. …
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Analysis of soil penetrometer using Eulerian finite element method
This thesis investigates the use of an Eulerian Finite Element (EFE) method for modeling penetration in soils. The formulation decouples material and nodal points displacements such that soil flows through a fixed finite element mesh. This approach eliminates problems of mesh distortion associated …
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The miniature electrical cone penetrometer and data acquisition system
The static cone penetrometer is an in-situ testing tool which was originally developed to derive information on soil type and soil strength. More recently, it has found application in liquefaction assessment. Typical cone penetrometers are heavy duty devices which are operated with the assistance …
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Design and development of a tractor-mounted, recording penetrometer
… hydraulically-operated, recording penetrometer, (ii) to collect the initial penetration resistance data from the experimental plots established for the long term study. A penetrometer assembly was designed and constructed with the capability of collecting penetration resistance …
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Evaluation of the engineering properties of clays with the piezocone penetrometer
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983.
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Determination of geotechnical properties of seafloor sediment using a free fall penetrometer
… signals from drops of a free fall penetrometer contain information about the nature of the seafloor. A simple sediment classification model was proposed using data from field deployment tests as well as literature. This model, though applicable only to the probes used in this study, …
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The correlation of a penetrometer to load bearing tests on prepared plots
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Civil Engineering, 1951
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Investigation of Pore Pressures During High-Velocity Impact by a Free Fall Penetrometer
Free-fall penetrometers (FFPs) are an attractive tool for the rapid characterization of sediments in the nearshore and coastal areas. To improve their measurement capabilities, modern FFPs can be equipped with pore pressure sensors. Pore pressure measurements are extensively used in traditional …
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Rapid shear strength evaluation of in situ granular materials utilizing the dynamic cone penetrometer
"Determination of the in situ shear strength of granular materials is an expensive and time consuming endeavor using traditional ""detailed"" evaluation techniques. The development of several ""rapid"" evaluation devices has facilitated the determination of the in situ shear strength of …
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In-Situ Geotechnical Characterization of Soft Estuarine Surficial Sediments Using a Portable Free Fall Penetrometer
… transport and deposition. Portable free fall penetrometers have been previously used to provide initial information on sediment type, strength, and stratification, but challenges with the calibration of empirical parameters such as the cone factor and strain rate factor hampered the derivation …
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Development of a Sediment Sampling Free Fall Penetrometer Add-on Unit for Geotechnical Characterization of Seabed Surface Layers
… processes. For example, portable free fall penetrometers (PFFPs) can assist with the detection of mobile sediment layers. They are easy to deploy, and can provide a large spatial coverage in a time- and cost-effective manner. However, they often struggle to provide more detailed information …
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A Method for Interpreting the In-Situ Consolidation State of Surficial Seabed Sediments using a Free-Fall Penetrometer
Free-fall penetrometers (FFP) are useful instruments for the rapid characterization of seabed sediments. However, the interpretation of FFP data remains largely a skilled task. In order to increase the reliability of results obtained using these instruments, in both expert and non-expert hands, it …
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Use of the mini-cone penetrometer for evaluating the liquefaction potential of sands associated with Charleston, S.C. seismic events
First-hand reports on the 1886 Charleston earthquake contain numerous accounts for the widespread occurrence of liquefaction related features in and near the meizoseismal zone. Recent geologic studies have found evidence for the repeated liquefaction of sandy soils in the Charleston area due to …
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A Tractor Mounted Device Used for Comparison of In-Situ Soil Bearing Capacity Between Two Tillage Regimes
… for bearing capacity tests and a probe for cone penetrometer tests. A hydraulic cylinder powered by the tractor's auxiliary hydraulic circuit forced the footing or cone penetrometer into the soil. Load cells were used to measure bearing plate and cone penetrometer loads. A linear potentiometer …
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Experimental Study of the Displacements Caused by Cone Penetration in Sand
… solutions experimentally. A large scale model penetrometer testing facility, consisting of a half-circular calibration chamber with digital image correlation (DIC) capability, was developed for experimental simulation of cone penetration. The flat side of the chamber is transparent, made of …
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Optical Techniques for Fruit Firmness Assessment
… and either acoustic or the industry standard penetrometer firmness measurements. Performance of the high speed MSI system was poor compared to the results seen in the literature using alternative spatially resolved spectroscopic systems and other apple varieties. Only weak correlations (R = …
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The Effects of Vibration on the Penetration Resistance and Pore Water Pressure in Sands
… through the use of a vibrating piezocone penetrometer. Cone penetration tests were performed in a large calibration chamber in saturated sand samples prepared at different densities and stress levels. A total of 118 tests were performed as part of the study. The piezocone penetrometer used …
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Potential use of wide tires for steep slope skidding
… compaction was evaluated by comparing soil cone penetrometer readings taken in the wheel tracks of the test lanes to those taken in undisturbed adjacent areas. Skidder lateral stability was analyzed using the mathematical model developed in this study. Based on the results of statistical analyses …
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Settlement Analyses of Grade Supported Tanks Constructed with the Use of Prefabricated Wick Drains and an Earth Preload
… included both undisturbed soil borings and cone penetrometer tests. Conclusions were made about the accuracy of the calculations and how assumptions affect the settlement computation results.
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Characterization of Emulsion Aggregate Mixtures
… deformation), tensile strength, Dynamic Cone Penetrometer (DCP) and curing effects are evaluated in the laboratory. In-service EAM pavement evaluation includes distresses, DCP, and non-destructive testing using the Falling Weight Deflectometer. The study concludes that EAM's are adequately …
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