1 edition of Development and validation of the downhole freestanding shear device (DFSD) for measuring the dynamic properties of clay found in the catalog.
Development and validation of the downhole freestanding shear device (DFSD) for measuring the dynamic properties of clay
by California Dept. of Transportation, Division of Research and Innovation, Available through the National Technical Information Service in Sacramento, CA, [Springfield, Va
Written in English
|Statement||prepared by Department of Civil and Environmental Engineering, University of California, Berkeley ; California Department of Transportation, Division of Research and Innovation ; prepared for California Department of Transportation, Division of Research and Innovation|
|Contributions||California. Dept. of Transportation. Division of Research and Innovation, University of California, Berkeley. Dept. of Civil and Environmental Engineering|
|LC Classifications||S592.367 .D48 2008|
|The Physical Object|
|Pagination||1 v. (various pagings) :|
|LC Control Number||2009526874|
In addition, measurements of the downhole performance of the tool string are used to validate data and assess the planning process. These customized solutions are designed to successfully deploy downhole tools and most importantly provide assurance of safe, reliable conveyance and accuracy of validation data through measurement. Once again, AGES is providing the cutting-edge technology in the most affordable and reliable manner - measure in-situ shear wave velocity (Vs) in a Downhole Shear Wave Test (DSWT) is necessary in basic site characterization and determination of soil profile types for earthquake design, in accordance with the provisions of Section of the NSCP,
A Comparison Between the Shear Strength Measured with Direct Shear and Triaxial Devices on Undisturbed and Remolded Soils Une comparaison entre la résistance au cisaillement mesurée avec appareils de cisaillement direct et triaxiaux sur les sols non remaniés et File Size: KB. 08 Packers Packers Introduction Halliburton offers a complete line of production packers and accessories — from standard packers to specialized designs for the most hostile environments. Halliburton has a packer for every type of completion: permanent packers rated up to .
the in-situ shear modulus of the soil (e.g., Mayne & Rix, ), a direct measurement of the soil property is desirable. Field measurements of shear wave velocity include crosshole tests (CHT), downhole tests (DHT), suspension logging, seismic reflection, seismic refraction, and spectral analysis of surface waves (SASW). A representation. Development of an Automated Large Scale Direct Shear Testing Machine for Rock Shear Box The servo control large scale direct shear apparatus consist of two steel boxi.e. upper shear box and lower shear box. The size of shear box is mm × mm × mm, with a gap of 5 mm between the boxes. Theneedle linear bearing of 5.
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Development and Validation of the Downhole Freestanding Shear Device (DFSD) for Measuring the Dynamic Properties of Clay The Downhole Freestanding Shear Device (DFSD) is an innovative tool developed for in situ measurement of dynamic properties (modulus and damping) of clay soils over a broad range of strains.
The strategy was to compare conventional thin-walled, Shelby tube sampling with the high-quality sampling method employed in the newly developed DFSD (the Downhole Freestanding Shear Device, Safaqah, Roblee and Riemer). The DFSD is designed to create and subsequently test a freestanding soil column cm in diameter and up to cm tall at the bottom of a by: 5.
Suits LD, Sheahan TC, Fakhimi A, Boakye K, Sperling DJ, Mclemore VT, Suits LD, Sheahan TC, Fakhimi A, Boakye K () Development of a modified in situ direct shear test technique to determine shear strength parameters of mine rock piles. Geotech Test J – Google ScholarCited by: 5.
Development and Validation of the Downhole Freestanding Shear Device (DFSD) for Measuring the Dynamic Properties of Clay (PDF) - DecemberMB The Evaluation of Key System Performance Measures for the Kings Stormwater Crossing Bridge Using a Level IV Non-Destructive Damage Evaluation Method (PDF) - DecemberMB.
Request PDF | Development of a Multi-directional Simple Shear Testing Device | A new simple shear testing device capable of applying multidirectional loading to soil specimens has been developed. PEER YEAR 8 PROGRESS REPORT Volume II Contents 2P01 Using the Downhole Freestanding Shear Device to Characterize the Dynamic Properties of Bay Mud Sites with Non-linear Seismic Response the development of basic criteria for performance-based design, and 2.
synthesis of available research information and communication through short user. Software allows visualization of downhole drilling hydraulics annular velocity, pipe eccentricity and rotation, low-shear-rate viscosity, flow regime, and avalanching cuttings beds.
in the current hydraulics program. Furthermore, new development tools and computer resources should outpace needs. Development and validation of new.
The Downhole SeismicTest makes direct measurements of compression (P-) or shear (S-) wave velocities, or both, in a borehole advanced through soil or rock or in a cone penetration test sounding.
It is similar in several respects to the Crosshole Seismic Test Method (Test Methods D /D M). AFile Size: KB. for design verification for both medical devices and military aerospace equipment. Stewart Fox is a former leader of the Mechanical Product Design Group in CCL®.
He worked closely with James during the research work, providing information and advice from his experience of medical device Size: 2MB. “Type curves” to determine pressure drop for the device for a Newtonian or a shear-thinning fluid (n ≤ 1).
The arrows in Fig. 13 illustrate the use of these type curves. For a fluid with a known rheological characterization in terms of a power law fluid (n and K) and a given geometry, the pressure drop across the device can be estimated Cited by: 7. The Downhole Freestanding Shear Device (DFSD) is an innovative tool being developed for in situ measurement of dynamic properties (modulus and damping) of clay soils over a.
to be interpreted properly but the device seems generally less useful than other shearing devices and it use has steadily decreased in recent years. DIRET SHEAR In the "direct shear apparatus," the soil is contained in two rings (Fig. The rings may be circular or, more commonly, square.
The inside dimensions are typically 2" x 2" to 4" x 4". A broad cross-section of papers from the 6th Internation Symposium FMGM in Oslo September detailing the latest developments in geomechanical field measurement technology and methods. Taking in a wide range of real-world applications from tunnels to off-shore structures, these papers look at both theoretical and practical aspects of the subject and assess performances in the field Reviews: 1.
Full online access to this resource is only available at the Library of Congress. About this Item. Book/Printed Material Development and validation of the downhole freestanding shear device (DFSD) for measuring the dynamic properties of.
Understanding and development of high shear technology for liquid metals processing is an important part of BCAST research and is of great interest for industry. Up to now, this method was found to give good experimental results but it was a lack of information about physical basics behind this File Size: 8MB.
Stoewahse () recommends a direct shear apparatus with a vertically movable upper half to avoid wall friction effects. This fact has been considered in DIN () in which a direct shear apparatus with a vertically movable upper half of the box is recommended as a standard device for the performance of direct shear tests.
The Borehole Shear Test can develop data in an hour that will require hours or even days of laboratory testing. The BST shear head is opened with air or regulated gas pressure so plates press laterally into the soil.
After 15 minutes the shear head is pulled upward. The same procedure then is repeated with progressively higher opening pressures. Procedure for Performing Direct Shear and Sliding Friction Testing Using a Portable Direct Shear Device Introduction This procedure is under the jurisdiction of the Materials Engineering and Research Laboratory, codeTechnical Service Center, Denver, Colorado.
The procedure is issued under the fixed designation USBR method to determine Go. It is assumed that down-hole and cross-hole tests have similar results. This paper briefly describes a system developed to perform the down-hole test right after the CPTU, using the same hole.
In spite of all the advantages of down-hole tests, recording and interpretation of seismic data are not so simple. The test procedureFile Size: KB. You may think validating a compiler is unnecessary, but the FDA says otherwise — section of the FDA Guidance on General Principles of Software Validation discussion includes “off-the-shelf software development tools, such as software compilers, linkers, editors, and.
The Downhole Freestanding Shear Device is a new, in situ tool for measuring the dynamic properties of cohesive soil deposits. It has been designed and developed to perform cyclic torsional shear tests on freestanding specimens beneath the bottom of a cased borehole, with.
The development of a direct simple shear device to carry out constant shear drained (CSD) tests is outlined. The purpose of the device is to study static liquefaction instability triggered by a rising phreatic surface under principal stress directions representative of conditions below a : D.
Reid, A. Fourie.a downhole shear-wave survey are few and widely scattered. Reasonable values for shear-wave velocities are listed in Figure 1. While there will be wide variations, the shear-wave velocity tells us a lot about the character of the material in-si-tu. Shear-wave velocities are dependent on the shear File Size: 1MB.