Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 89 for “"Load Cell"”.
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Genetic algorithm optimisation of load cell geometry by finite element analysis
… was to numerically model the influence of end-loading conditions on column strain gauge load cells and to develop the model into a program for optimising the geometry of column load cells. It is shown that, for most practical loading conditions, load celis with large numbers of equispaced …
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Design of a load cell for triaxial force measurement in walking
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.
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Design and analysis of a Stewart-platform-based six-axis load cell
In this work, a six-axis load cell based on the geometry of a Stewart platform was developed. Its geometry and functional requirements were motivated by the needs of robotic limbs designed to be attached to human workers to support them in typically unergonomic positions. The sensor can measure …
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A Novel Method for Testing Freestanding Nanofilms Using a Custom MEMS Load Cell
Following fabrication, membrane thickness was measured using several methods, including: profilimetry, Scanning Electron Microscopy, and custom spectrophotometry. The mechanical properties of several membranes were measured using the apparatus, including membranes of gold, single crystal silicon, …
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Measuring the fracture energy of bed breakage using a short impact load cell
… investigating particle fracture under impact loading has led to the development of several devices which include the twin pendulum device, drop weight tester, Split Hopkinson Pressure Bar, Rotary Breakage Tester and the Short Impact Load Cell. In this study the Short Impact Load Cell (SILC) …
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Controlling the feedrate of material from a vibratory pipe conveyor using an electro-magnetic vibrator and load cell system
Submitted in compliance with the requirements for the National Masters Diploma in Technology: Electronic Engineering, Technikon Natal, Durban, South Africa, 1994.
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Development of a dynamic multi-belt scale for IQF sorting
… a lower pitch conveyor belt and a different load cell with optimal capacity. Four configurations were tested; two spacing support piece materials and two types of load cell. Previous dynamic weighing products by Valka are capable of delivering a 95% confidence interval of +/-4g at a rate of …
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FEASIBILITY OF USING EXPERIMENTAL LOAD MEASUREMENTS ON A CYLINDER TO PERFORM PHASE-SENSITIVITY ANALYSIS IN THREE-DIMENSIONAL FLOWS
… reduction analysis by using experimental direct load measurements on a cylinder. The outcome of this study is the validation of a method to use load measurements on a cylinder due to wake shedding to measure phase offset jumps and generate phase-sensitivity functions. Experimental data was …
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Design and validation of new testing apparatus for testing helical compression springs under combined axial, shear, torsion, and bending loads.
… was constructed using a custom six axis load cell and a commercial MTS system. The calibration and validation of the custom load cell is presented. One compression spring was tested under different combinations of axial, shear, and torsional displacements to validate the design of the …
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The design and construction of a large plane strain apparatus for testing reinforced soil specimens
… materials included. A 30,000-pound capacity load frame and a 20,000-pound capacity electric load cell were also constructed during this study. Drawings of the equipment constructed and a design method for the load cell are included. Preliminary tests on unreinforced and reinforced samples …
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An investigation of the forces within the tibiae at typical blast loading rates : with different boots
… (MiL-Lx) legs, are used to quantify the impulse loading on the lower extremities when subjected to the forces of the rapidly deforming floor. These surrogate legs are also used in laboratories for simulated blast loading tests and scaled field tests to evaluate protection measures for the lower …
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Development of a 6-DOF robotic test system for studying the biomechanics of total knee replacement
… is rigidly mounted to the robot arm through the load cell. This robotic system determines the kinematics response of the knee under various external-loading conditions. The kinematics data can then be reproduced on the knee specimen. Upon simulation of knee motion, forces and displacements are …
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Nonlinear beam-based vibration energy harvesters and load cells
… The final chapter of this thesis investigates a load cell that uses the stiffening spring to maintain high resolution over a large range of forces and prevent large forces from damaging the load cell. Future work will include testing a full energy harvester prototype and exploring other …
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Preliminary Design of an Improved Load Measuring Device for Underground Mining Standing Supports
… underground retreat mining. Knowledge of the load-displacement behavior of a standing support and loading induced by the mine opening is critical proper support selection. The NIOSH STOP database contains load-displacement laboratory test data for most commonly used standing supports. …
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Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… sensor designs were tested: a capacitive load cell with non-linear dynamics used to classify material type and tool wear conditions, an acoustic sensor used to classify tool wear, and a capacitive load cell with linear dynamics used to measure the cutting forces. Full scale rock cutting …
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Development of an intermediate strain rate compression testing machine
… in the wedge bar helps ensure a near constant loading rate over the duration of the experiment. The yield stress is captured at above 80 of the average strain rate for the experiment for most of the materials investigated. The design work focuses primarily around the design of the new …
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Estimation of Uncertain Vehicle Center of Gravity using Polynomial Chaos Expansions
… center of gravity for a vehicle from static load cell measurements. A secondary goal is to use experimental testing as a source of uncertainty and as a method to confirm the results from the PCE simulation. While PCE has often been used as an alternative to Monte Carlo, PCE models have rarely …
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BIOMECHANICS OF THE DISTAL RADIOULNAR JOINT WITH A MALALIGNED DISTAL RADIUS
… biomechanics, specifically the kinematics and loading of the distal radial ulnar joint (DRUJ) before and after simulated distal radius malalignment would provide important new information to the treatment of these fractures. Furthermore, an investigation into the effect of soft- tissues would …
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