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 12 of 12 for “"Haul Truck"”.
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Increasing Haul Truck Safety through the use of Virtual Pre-Shift Inspection Training
On average, there are approximately ten fatal haul truck accidents per year in the United States. The most common causes for haul truck accidents include mechanical problems, inadequate training, and insufficient road/berm maintenance. Due to the frequency and magnitude of haul truck accidents, new …
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Data Quality of Fleet Management Systems in Open Pit Mining: Issues and Impacts on Key Performance Indicators for Haul Truck Fleets
… two different software vendors. For each FMS, haul truck fleet data from a separate mine site was analyzed. Both mine sites had similar haul trucks, and similar fleet sizes. From a qualitative perspective, it was observed that inconsistent labelling (assignment) of activities to time categories …
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Driving the Future of Long-Haul Trucking: Realizing the Potential of Battery Electric Vehicles through an Analysis of Financial and Environmental Impacts
… to battery electric vehicles (BEVs) for long-haul trucking, using system dynamics modeling, financial impact modeling, and environmental impact modeling, and looks across a broad range of possible future scenarios that could impact the viability of BEV use in long-haul trucks. System dynamics …
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Application of STPA-Sec for analyzing cybersecurity of autonomous mining systems
… For this work, we have selected the autonomous haul truck used in the surface mining operation as the subject. We were motivated primarily by existing OEM efforts on introducing autonomy in the industry through hauling. Various stages of hauling process including the interaction with manually …
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From Road to Laboratory: A Data-Driven Framework for Field-Aligned Simulation of Braking Dynamics Toward Sustainable Unit Load Packaging
… in controlled settings using an instrumented box truck and in uncontrolled settings, multi-day commercial shipments spanning long-haul truck, container-on-train, and trailer-on-flatcar segments. Unit load response to braking events was evaluated in controlled tests using a repositionable unit load …
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Extremum seeking control of battery powered vapor compression systems for vehicles
… situations, and are especially important to long-haul truck drivers who sleep inside their vehicle overnight. However, one drawback of battery powered vehicle VCS is their short lifespan which may not provide cooling through the whole night while the vehicle engine is turned off. One reason for …
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Functional safety fault tree analysis of a model autonomous haulage system
Autonomous Haulage Systems (AHS) in mining began trials in the 1990’s but have only become widely accepted in the last five years. Mine operators with AHS deployments are reporting greater than 20% increases in utilization of trucks and reductions of hourly operating costs as compared to manned …
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Multi-body dynamic and finite element modeling of ultra-large dump truck - haul road interactions for machine health and haul road structural integrity
<p>"Haul truck capacities have increased due to their economies of scale in large-scale surface mine production systems. Ultra-large trucks impose high dynamic loads on haul roads. The dynamic loads are exacerbated by road surface roughness and truck over-loading. The dynamic forces also subject …
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The role of natural gas as a vehicle transportation fuel
… fleet vehicles and in heavy-duty, short-haul fleet vehicles. For light-duty applications, there is a need to address an existing market barrier in the US by reducing the incremental cost and improving the vehicle performance of CNG vehicles to levels found in Europe. This incremental cost …
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An Improved Model for Prediction of PM10 from Surface Mining Operations
… quality permits. Past research has shown that haul trucks create the majority (80-90%) of PM10 emissions from surface mining operations. Therefore, this research concentrated on improving the ISC3 model by focusing on modeling PM10 emissions from mobile sources, specifically haul trucks at …
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The use of roll-off bins and a hook-lift equipped harwarder and truck for forest biomass utilization
… forwarder combi-machine (or “harwarder”) and haul truck were tested for forest biomass utilization and roundwood harvesting. Detailed time-and-motion studies were conducted at two study sites in Western Montana. The data from these studies were used to develop productive total cycle time …
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The use of roll-off bins and a hook-lift equipped harwarder and truck for forest biomass utilization
… forwarder combi-machine (or “harwarder”) and haul truck were tested for forest biomass utilization and roundwood harvesting. Detailed time-and-motion studies were conducted at two study sites in Western Montana. The data from these studies were used to develop productive total cycle time …