In Part 1 of this paper, models were developed to describe the formation mechanisms and dynamic b... more In Part 1 of this paper, models were developed to describe the formation mechanisms and dynamic behavior of cutting fluid mist. This part of the paper focuses on experimentally investigating mist formation during the turning process, and then simulating the dynamic behavior of the mist droplets, including the distribution and the mass concentration. Simulation results are compared to experimental measurements to validate the theoretical models presented in Part 1. It is seen that the model predictions adequately characterize the observed experimental behavior.
Cutting fluid mist is becoming an increasing concern for manufacturers as additional information ... more Cutting fluid mist is becoming an increasing concern for manufacturers as additional information is obtained on the health risks that it poses. This two-part paper is focused on investigating cutting fluid mist formation via an atomization mechanism in a turning process. Models will be established to predict the fluid mist mean drop size as well as the drop size distribution. Predictive relationships will also be presented for the settling behavior of the fluid mist and the mass concentration. Part 1 of the paper is devoted to the development of the requisite models to describe the mist creation and settling phenomena. In Part 2 of the paper, the mist formation models will be validated through a series of experiments.
Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown ... more Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown to have deleterious effects on human health. An experimental effort is conducted to study the formation and composition of respirable fumes from a SMAW process. The responses examined are the fume particle size distribution (mean diameter) and formation rate (particle number and mass concentration). The investigated process variables include electrode type and diameter, welding current level, weld speed, weld angle, and current type. Welding current and current type (AC/DC) are shown to strongly influence the fume generation rate.
A simulation model for material flows and economic ex-changes within the U.S. automotive material... more A simulation model for material flows and economic ex-changes within the U.S. automotive material life cycle chain is presented. The model is employed to examine the effect of future changes in vehicle material composition on the auto-motive recycling infrastructure. The model results indicate that as vehicle material composition changes, higher dismantling/ recovery rates are needed to ensure economic viability of the recycling infrastructure. Furthermore, even in the case of sig-nificantly higher rates of dismantling and plastics recovery, the amount of shredder residue per vehicle will continue to rise.
Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown ... more Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown to have deleterious effects on human health. An experimental effort is conducted to study the formation and composition of respirable fumes from a SMAW process. The responses examined are the fume particle size distribution (mean diameter) and formation rate (particle number and mass concentration). The investigated process variables include electrode type and diameter, welding current level, weld speed, weld angle, and current type. Welding current and current type (AC/DC) are shown to strongly influence the fume generation rate.
In Part 1 of this paper, models were developed to describe the formation mechanisms and dynamic b... more In Part 1 of this paper, models were developed to describe the formation mechanisms and dynamic behavior of cutting fluid mist. This part of the paper focuses on experimentally investigating mist formation during the turning process, and then simulating the dynamic behavior of the mist droplets, including the distribution and the mass concentration. Simulation results are compared to experimental measurements to validate the theoretical models presented in Part 1. It is seen that the model predictions adequately characterize the observed experimental behavior.
Cutting fluid mist is becoming an increasing concern for manufacturers as additional information ... more Cutting fluid mist is becoming an increasing concern for manufacturers as additional information is obtained on the health risks that it poses. This two-part paper is focused on investigating cutting fluid mist formation via an atomization mechanism in a turning process. Models will be established to predict the fluid mist mean drop size as well as the drop size distribution. Predictive relationships will also be presented for the settling behavior of the fluid mist and the mass concentration. Part 1 of the paper is devoted to the development of the requisite models to describe the mist creation and settling phenomena. In Part 2 of the paper, the mist formation models will be validated through a series of experiments.
Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown ... more Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown to have deleterious effects on human health. An experimental effort is conducted to study the formation and composition of respirable fumes from a SMAW process. The responses examined are the fume particle size distribution (mean diameter) and formation rate (particle number and mass concentration). The investigated process variables include electrode type and diameter, welding current level, weld speed, weld angle, and current type. Welding current and current type (AC/DC) are shown to strongly influence the fume generation rate.
A simulation model for material flows and economic ex-changes within the U.S. automotive material... more A simulation model for material flows and economic ex-changes within the U.S. automotive material life cycle chain is presented. The model is employed to examine the effect of future changes in vehicle material composition on the auto-motive recycling infrastructure. The model results indicate that as vehicle material composition changes, higher dismantling/ recovery rates are needed to ensure economic viability of the recycling infrastructure. Furthermore, even in the case of sig-nificantly higher rates of dismantling and plastics recovery, the amount of shredder residue per vehicle will continue to rise.
Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown ... more Welding fumes are common ambient air pollutants in manufacturing facilities, and have been shown to have deleterious effects on human health. An experimental effort is conducted to study the formation and composition of respirable fumes from a SMAW process. The responses examined are the fume particle size distribution (mean diameter) and formation rate (particle number and mass concentration). The investigated process variables include electrode type and diameter, welding current level, weld speed, weld angle, and current type. Welding current and current type (AC/DC) are shown to strongly influence the fume generation rate.
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Papers by Kenneth Gunter